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Recently Asked Modern Physics Questions

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Q1:Buoyant Force and Archimedes Principle Pre-Lab Questions Draw a free body diagram of a hanging mass before it is submerged in water. Make sure to label your forces. Draw a free body diagram of a hanging mass after it is submerged in water. Make sure to label your forces. Which force is the force you measure with the spring scale? Apply Newton’s second law to your free body diagram in Pre-Lab Question 2 to solve for the magnitude of the buoyant force. A wooden crate, made from wood with density ρw, is floating on a liquid with density ρl. Formulate a general equation for the depth the crate is submerged, h, if the crate has a length, L, width, W, and height, H. Write your equation in variable form. Solve for the depth the crate is submerged if ρw = 670 kg/m3, ρl = 1,100 kg/m3. L = 10 m, W = 7.0 m, and H = 5.0 m. If the crate is submerged under the water, Derive a general equation for the acceleration of the box after it is released. Show your work. Determine the acceleration of the wooden crate for the values given in Pre-Lab Question 4. Show your work. Experiment 1: Effects of Density Data Sheet Post-Lab Questions Sketch and label what the arrangement of objects and liquids in the beaker. Rank the liquids and solids in order of least to most dense and use your results to explain you reasoning. Which of the solid materials used in this experiment would make the best boat? Why? Would it be easier to design a boat in a world with oceans of maple syrup than oceans of saltwater? What property of maple syrup might prevent boats from traveling in it very effectively compared with in water? Experiment 2: Buoyant Force and Floating Data Sheet Table 1. Number of Washers a Clay Boat Can Hold before Sinking Type of Liquid Number of Washers Plain Water Salt Water Post-Lab Questions What did you observe when you placed the ball of clay into the beaker? What were characteristics of the boat design that floated the best? Use Archimedes’ Principle to explain why these design characteristics cause the boat to float, and the clay ball to sink. If your clay boat weighs .005 kg and is floating, what is the upward force the water is exerting on the boat? How could you improve your boat design to increase the buoyant force without using more clay? In the second part of the experiment, does the boat hold more weight in the regular water or the salt mixture? What does this say about the relative densities of salt water and plain water? How much water does an object have to displace before it will float? Experiment 3: Buoyant Force and Archimedes Principle Data Sheet Table 2. Dimensions of 250g Hanging Mass Hexagonal Base Edge (cm) Base Diameter (cm) (cylindrical mass) Height (cm) Table 3. 250 g Hanging Mass Buoyancy Data Object Weight in Air (N) Weight in Water (N) Buoyancy Force (N) Volume Displaced (mL) 250 g Hanging Mass Rubber Stopper Post-Lab Questions What happens to the apparent weight when the objects are submerged in water? Use the value of the buoyant force to calculate an experimental value of the volume of the 250 g mass in kg/m3 (Fb = ρLVD g). The density of water is approximately 1,000 kg/m3. Show your work. Use the measured dimensions of the 250 g mass to calculate the volume of the mass based on its shape. Show your work. Determine the percent difference between the measured volume of the 250 g mass and the value calculated from the buoyant force measurement. Show your work. Using the fact that 1 mL = 1 x 10-6 m3, compare the volume of the displaced water to the calculated volume of the mass from Post-Lab Question 3 with a percent error calculation. Show your work. Are the three experimental values of the volume of the 250 g mass (from Archimedes’ Principle) larger or smaller than the calculated value using the caliper measurements? Why? Which of the three values for volume is more accurate? Which of the two experimental volumes are more accurate? Explain. Does the data support Archimedes’ Principle? Why or why not? Identify two possible sources of error in the experiment. How could the procedure be revised to remove these potential errors? ©eScience Labs, 2014See Answer
Q2:3. Consider a 6th-generation Ford Mustang 5.0L V8. Its transmission gear ratios are shown. Engine/Speed First Second Third Fourth Fifth 5.0L V8 Sixth Final Drive 3.657 2.430 1.686 1.315 1 0.651 3.31:1 Coasting at 60mph at fifth-speed, the engine generates 40kW of power. The vehicle has P245/45R20 tires. The driver increases the torque by 20% to accelerate. Find the vehicle speed after 10s.See Answer
Q3:For the vector field D = R3R², evaluate both sides of the divergence theorem for the region enclosed between the spherical shells defined by R=1 and R = 2.See Answer
Q4: Sheffield Hallam University Department of Engineering and Mathematics Assessment Specification Session: Module: Module Leader: Assignment title: Academic contact(s) for guidance: Maximum word count or number of pages: 1600 words Percentage contribution to module mark: 40% Deadline for submission: Method and Location for Submission: Module learning outcomes to be assessed: 1) Search for, read, assess, summarise and apply technical information. References/recommended reading: See the reading suggestions in the assignment brief below. You will also find it useful to review general A-level texts available from the Adsetts Learning Centre on Engineering or Physics. Reliable website sources can be of use as well. Please ensure that all sources of information used are referenced. For guidance see the university's library information guides on referencing All assessments are subject to SHU's Academic Conduct regulations. Links You may find the following useful: The university's skills centre Tips on time management Study materials Hallam Help The library gateway Studiosity Sheffield Hallam University Knowledge Applied Two Dimensional Kinematics of a Sport You are employed as a technical advisor at a consultancy company. The consultancy company have been approached by a local amateur sports club wishing to gain scientific insight and predictions into the flight / path of objects in their sports for athletes to gain a better understanding of their sports. Your line manager has tasked you with producing a technical written report for the sports club into one of the following sports: • Football throw in for maximum distance (from moment of launch to landing) • Javelin throw (from moment of launch to landing) · Basketball penalty shot (from moment of shot to entering the hoop) 1 • Discus throw (from moment of launch to landing) • Cricket fielding throw for maximum distance (from moment of launch to landing) Baseball hit (from moment of shot to landing) You are to choose ONLY ONE sport from the above list as the basis of your technical report. You will initially need to identify, with reason/reference, for your chosen sport, typical initial conditions such as launch position, launch velocity and launch angle. Also any requirements or aims for the landing position of the object. Your line manager has asked you to include in the report an analysis of the motion of the object based on the two-dimensional kinematic equations of motion. Calculations should only include gravitational acceleration effects. The calculations should neglect effects of drag, friction and other external forces. Key aspects for the calculations will include: • The position and velocity of the object after exactly 0.75 seconds from launch. • Time it takes for the object to reach maximum height. • Maximum height of the object. • Velocity of the object at maximum height. • Total time it takes from launch to target. • Range of the flight from launch to target. The analysis should make a recommendation, based on the above calculations, of the initial launch conditions to improve an athlete's performance in the sport. A detailed discussion should then be given, based on your research, about the other important factors that may affect the flight of the object and how this relates to the sport chosen. 1 rather than trying to achieve maximum distance a basketball penalty shot has a target, as such the starting point is different to the other sports, a velocity must be calculated for the initial launch - see learning video guide in the Assessment section of the Blackboard site if choosing basketball. Fundamental Engineering Principles 55-301750 Assignment 2023/24 Sheffield Hallam University Knowledge Applied The report should be between 1500 and 1600 words² plus should follow the below structure: • Title / author • • ●• • An executive summary / abstract A succinct introduction to the sport stating the relevant parameters, aims of the sport and aims of the report. Calculations: ○ All calculations with associated diagrams/charts/equations to illustrate and explain your conclusions. о Justification of choices made. A discussion (no calculations needed), from your research, of further factors (e.g. will drag or spin affect the flight?) that would affect the calculations you have made. How may drag or spin (if present) change the outcome of the calculations you have provided? What conclusions can you draw from your discussion about possible changes to the calculations made and/or the initial launch choices made? A brief conclusion containing the main finding or your calculations and reflection on if further changes to the calculation are required to improve the accuracy of the calculations. Do: • • Read the provided referenced sources. Research and reference your own sources (a minimum of four of your own references). Make sure to indicate in your report where you have used information from a reference source. • Read the Assessment Criteria grid on the last page. • Further help is available regarding formatting report on the module blackboard site and the Skills Centre. Timetabled drop-in classes can be used to gain formative feedback on your progress. Resources • Book Chapters on kinematics ○ Harris & Benson (1995). Chapter 4: Inertia and Two-Dimensional Motion. University Physics (revised ed.). (pp55-79). Wiley. • • ○ Sears & Zemansky (2011). Chapter 3: Motion in two or three dimensions. University Physics (13th ed.). (pp69-103). Pearson. IOP article on external factors Asai, T., Akatsuka, T., Haake, S., (1998) The physics of football. Physics World, 11(6), p. 25. One-to-one help Weekly timetabled drop-in sessions • Module Blackboard Site. • SHU Skills Centre • Studiosity • SHU referencing 2 anything over 10% of the word count (1760) will not be marked and not contribute towards your mark. Fundamental Engineering Principles 55-301750 Assignment 2023/24 Sheffield Hallam University Knowledge Applied Fundamental Engineering Principles 55-301750 Assignment 2023/24 Assessment Criteria Criterion: Indicative weighting: % Pass (Excellent) Pass (Very good) Initial conditions of chosen sport 10% Objectives clearly and succinctly Objectives of report stated. identified. Parameter range identified for Typical parameters of the sport the sport from credible sources. identified and referenced. Analysis and calculations 20% Research and disussion of other factors that effect the in flight 50% motion in the chosen sport Referencing 10% Structure, technical formatting and presentation of report 10% Sheffield Hallam University Knowledge Applied Pass (Good) Some aims stated and parameters identified from sources with low credibility. Pass (Satisfactory) Aim identified and stated. Parameters identified but with some inaccuracies. Fail (Unsatisfactory) Little or no aims of the report stated. Parameters of the sport either not stated or incorrect. Zero Work absent, work not submitted, penalty in some misconduct cases. 16 15 14 13 Clear and logical approach to solve complex problem. Formulae used in order to draw informed conclusions & recommendations. Alternative variations considered. Analysis follows a clear & logical course, highlighting assumptions made. 16 15 14 13 10 8 7 12 11 9 Appropriate use of formulae to Elements analysed using analyse flight. Analysis is appropriate formula. carried out to a high level of Calculations contain some accuracy with no mathematical mathematical errors or errors in the report. inaccuracies. Little interpretation Interpretation of the of the calculation. Units not calculations incomplete. All used, missing or incorrect. units correctly quoted with numbers to an appropriate accuracy. 12 11 10 Data acquired from a range of reliable & Data acquired from a range of credible sources. Excellent use of material evidencing broader depth of reading/research to provide the reader with a clear picture of any recommendations. sources. Very good knowledge shown demonstrating most of the effects. Information reviewed and presented. 7 9 8 Research conducted into the subject using sources of low credibility; marketing websites etc. Good kowledge shown. No presentation of reviewing the literature, leaving the reader poorly informed. 6 5 4 3 Some appropriate formula identified. Calculations contain errors. Little o no interpretation of the calculations. 5 6 Limited research shown. Basic knowledge shown. No review with little or no no insight into other factors effecting the sport. 2 1 Cursory attempt to analyse required part of the flight. Inaccurate or inappropriate use of formulae. No consideration given to units or units wrong. 0 Work absent, work not submitted, penalty in some misconduct cases. 0 Work absent, work not submitted, penalty in some misconduct 4 3 2 1 Very basic understanding of the subject and underlying concepts. Little or no evidence of any research having been carried out cases. in to the subject. 16 15 14 13 12 11 10 9 8 7 6 5 4 3 References paraphrased in text and appropriately cited using SHU approved referencing scheme. References included as quotations and appropriately cited using SHU approved referencing scheme. List of references at end of report | List of references poorly do not clearly relate to the narrative. narrative. No credible references provided. formatted, not always related to References missing or in incorrect format. 2 1 0 Work absent, work not submitted, penalty in some misconduct cases. 16 15 14 13 12 11 10 Professionally presented and formatted report including executive summary (abstract), inclusion of material in appropriate sections, page numbers, captions, equation numbers etc* Clearly worded and formatted report. Appropriate use of figures, tables, equations to illustrate main points of the report. 9 Report completed to a good standard of English. Use of equations, figures. 8 7 6 5 4 3 2 1 0 Readable report with some errors or unclear communication. Inconsistent formatting used for sections, figures, eugations etc. Poorly presented document. Difficult to follow. Uncaptioned tables and figures. Figures, tables, euqations not referred to in text. Work absent, work not submitted, penalty in some misconduct cases. 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 *This is not an exhaustive list of criteria for a professionally formatted report. The Sills centre can advise on writing and formatting. * Please make use of the Learning Centre and Skills centre for report writing skills, structuring and guide to referencing. Fundamental Engineering Principles 55-301750 Assignment 2023/24See Answer
Q5: Induction is used in surgical cauterization tools to heat a metal tip which is then used to seal tissue during surgery. Assume that such a device consists of a "heater coil" which is a solenoid and in the center of the solenoid there is a separate smaller coil of wire called the "cauterization coil". The axis of the two coils are parallel to each other as shown. (a) What is the inductance of the heater coil? (b) Find the magnetic field produced by the heater coil when the current through it is 15.5 A. (c) If the current in the heater coil drops from 15.0 amps to 0 amps in 5.0E-4 s, calculate the emf produced in the cauterization coil. Solenoid/ Heater coil R cauterization coil Solenoid/Heater Coil N = 800 R=0.005 m L = 0.07 m Cauterization Coil N = 70 R=0.002 m L = 0.01 mSee Answer
Q6: 6/4/24, 10:10 PM Chapter 23: Electric Potential Chapter 23: Electric Potential To understand how points are awarded, read the Grading Policy for this assignment. Exercise 23.1 - Enhanced - with Solution A point charge with a charge q₁ = 2.20 μC is held stationary at the origin. A second point charge with a charge q2 = -4.50 μC moves from the point x = 0.160 m, y = 0 to the point x = 0.250 m, y = 0.250 m. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Conservation of energy with electric forces. Part A How much work is done by the electric force on 92? Express your answer in joules. ANSWER: J Exercise 23.8 - Enhanced - with Feedback Three equal 1.10 μC point charges are placed at the corners of an equilateral triangle with sides 0.800 m long. Part A What is the potential energy of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.) Express your answer with the appropriate units. ANSWER: U = Exercise 23.4 - Enhanced - with Feedback Part A How much work would it take to push two protons very slowly from a separation of 2.00 x 10-10m (a typical atomic distance) to 3.00 × 10-15 m (a typical nuclear distance)? Express your answer in joules. ANSWER: https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=11183842 1/13 6/4/24, 10:10 PM W = Chapter 23: Electric Potential J Part B If the protons are both released from rest at the closer distance in part A, how fast are they moving when they reach their original separation? Express your answer in meters per second. ANSWER: v = m/s Exercise 23.10 - Enhanced - with Feedback Four electrons are located at the corners of a square 10.0 nm on a side, with an alpha particle at its midpoint. Part A How much work is done by the Coulomb force when the alpha particle moves to the midpoint of one of the sides of the square? Express your answer in joules. ANSWER: W = J Exercise 23.12 - Enhanced - with Feedback An object with charge q = -7.00×10-9 C is placed in a region of uniform electric field and is released from rest at point A. After the charge has moved to point B, 0.500 m to the right, it has kinetic energy 4.00×10-7 J. Part A If the electric potential at point A is +30.0 V, what is the electric potential at point B? Express your answer with the appropriate units. ANSWER: VB = Part B What is the magnitude of the electric field? https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=11183842 2/13 6/4/24, 10:10 PM Express your answer with the appropriate units. ANSWER: E = Part C What is the direction of the electric field? ANSWER: from point B to point A from point A to point B perpendicular to the line AB Chapter 23: Electric Potential Exercise 23.16 - Enhanced - with Feedback Two stationary point charges +3.00 nC and +2.00 nC are separated by a distance of 50.0 cm. An electron is released from rest at a point midway between the two charges and moves along the line connecting the two charges. Part A What is the speed of the electron when it is 10.0 cm from the +3.00 nC charge? Express your answer with the appropriate units. ANSWER: v = Exercise 23.19 - Enhanced - with Solution Two point charges q₁ = 2.30 nC and 92 = -6.20 nC are 0.100 m apart. Point A is midway between them; point B is 0.0800 m from 91 and 0.0600 m from 92. Take the electric potential to be zero at infinity. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Potential and potential energy. https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=11183842 3/13 6/4/24, 10:10 PM Chapter 23: Electric Potential Part A Find the potential at point A. Express your answer in volts. ANSWER: VA = Part B Find the potential at point B. Express your answer in volts. ANSWER: VB = V V 0.080 m B -0.060 m +0.050 m→<0.050 m→ 91 A Part C Find the work done by the electric field on a charge of 2.80 nC that travels from point B to point A. Express your answer in joules. ANSWER: W = Exercise 23.44 J In a certain region of space the electric potential is given by V = B = 8.00 V/m³. = +Ax²y – Bxy², where A = 5.00 V/m³ and https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=11183842 92 4/13 6/4/24, 10:10 PM Part A Chapter 23: Electric Potential Calculate the magnitude of the electric field at the point in the region that has cordinates x = 2.50 m, y = 0.400 m, and z = 0. Express your answer with the appropriate units. ANSWER: E = Part B Calculate the direction angle of the electric field at the point in the region that has cordinates x = 2.50 m, y = 0.400 m, and z = 0. Express your answer in degrees. ANSWER: 0 = measured counterclockwise from the positive x axis in the xy plane Exercise 23.28 - Enhanced - with Feedback A total electric charge of 2.00 nC is distributed uniformly over the surface of a metal sphere with a radius of 28.0 cm. The potential is zero at a point at infinity. Part A Find the value of the potential at 45.0 cm from the center of the sphere. Express your answer in volts. ANSWER: V = V Part B Find the value of the potential at 28.0 cm from the center of the sphere. Express your answer in volts. ANSWER: V = V Part C Find the value of the potential at 11.0 cm from the center of the sphere. Express your answer in volts. https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=11183842 5/13See Answer
Q7:1 Question 1 Calculate the hot particle beta skin dose rate in Gy/Sec for a 0.1 Bq particle of 98Tc on the arm. The decay scheme of 98 Tc is attached. Note that E(i) for beta particles listed in the decay scheme is the beta average energy./n2 Question 2 You have an aluminum-walled dosimeter with an inner collection volume of 1.8 cm³, filled with a standard counting gas (you can assume "air"). The dosimeter is placed in a 100 keV photon field (the detector wall is just thick enough for electronic equilibrium at 100 keV). The charge collection rate is 2.6×10-9 C/sec. Calculate (a) the dose rate in Gy/Sec to the collection volume; (b) the dose rate in Gy/Sec to the wall of the detector; (c) the dose rate in Gy/Sec to air outside the detector; and (d) the dose rate to a person (water) in Gy/Sec if they were standing in the same spot as the detector./n3 Question 3 Similar to the rule-of-thumb I [A] @ 1 foot = 6CEY (where C is activity in Curies, E is gamma energy in MeV, and Y is the gamma yield), deter- mine a separate rule-of-thumb for 600 keV photons that provides exposure rate in units of mR/min 1 yard, given that 1 yard = 0.9144 meter and error in the rule-of- Γ = 194.5 [hr CEMEV] hr-Ci-MeV E(MeV) [Hen (T)]. State the P thumb if someone were to use it for 1.25 MeV photons.See Answer
Q8:(1) Explicitly demonstrate (write it ALL out - it should take several lines of detailed math) that p"pμ is a Lorentz invariant by explicitly applying the Lorentz transform. p" is the 4-momentum. Use the x-direction for the relative frame motion).See Answer
Q9: webassign.net Equilibrium (Online Lab) W HW-PHY 211-02: General Physi... W (Online Lab) - PHY 211-02: Gene... C https://www.chegg.com/homewo... ChatGPT A + D 0.59814453125 - Wolfram|Alpha In this lab you will use equilibrium to determine the mass of a meter stick. To do this, a hanger (whose mass is known) will be hung on the meter stick and the meter stick will be carefully balanced (see the picture below). Kmart 15161718 15 20 21 it-yourself Home Center H Kmart To begin with, you should draw a force diagram for the meter stick in the above picture. Then answer the questions by stating the direction of each force and where each force is acting. Normal force: Choose direction--- Tension force: ---Choose direction--- Meter stick weight: ---Choose direction--- Hanger weight: ---Choose direction--- Net force: ---Choose direction--- ---Where is it acting?--- ---Where is it acting?--- ---Where is it acting?--- ---Where is it acting?--- ---Where is it acting?--- To find the meter stick's mass you're going to need to make use of torque, which means you're going to need to know the center-of-mass of the meter stick. Ideally this would be at 50 cm but reality is rarely ideal. As such, you'll need to determine the center-of-mass of the meter stick. Go to the Center-of-mass section and record the needed data in the table below. Position uncertainty Center-of-mass position Hanger mass Mass uncertainty (cm) (cm) (g) 50.11 (g) 0.02 Now it's time to set up the meter stick with the hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Let the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass uncertainty is given just below the table. Clamp position (cm) Hanger position Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 80 F5 95 F6 F4 F3 F2 FI F7 ཀླུ་』 DII FB 44 BBBA F9 F10 F11 F12 In this lab you will use equilibrium to determine the mass of a meter stick. To do this, a hanger (whose mass is known) will be hung on the meter stick and the meter stick will be carefully balanced (see the picture below). KKmart Tie Tizis 19 20 21 TEEN -it-yourself Home Center H Kmart To begin with, you should draw a force diagram for the meter stick in the above picture. Then answer the questions by stating the direction of each force and where each force is acting. ---Where is it acting?--- Normal force: --Choose direction--- Tension force: ---Choose direction--- Meter stick weight: ---Choose direction--- Hanger weight: ---Choose direction--- Net force: ---Choose direction--- To find the meter stick's mass you're go but reality is rarely ideal. As such, you'l Position uncertainty Center-of-m (cm) (cm) at the fulcrum at the meter stick's center of mass where the hanger is attached to the meter stick at the left end of the meter stick at the right end of the meter stick No normal force Impossible to determine you're going to need to know the center-of-mass of the meter stick. Ideally this would be at 50 cm er stick. Go to the Center-of-mass section and record the needed data in the table below. (g) (g) 50.11 0.02 Now it's time to set up the meter stick with the hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Let the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass uncertainty is given just below the table. Clamp position (cm) Hanger position Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 66 20 A DII 44 F2 F3 F4 F5 F6 F7 FB F9 F10 F11 FIX CC In this lab you will use equilibrium to determine the mass of a meter stick. To do this, a hanger (whose mass is known) will be hung on the meter stick and the meter stick will be carefully balanced (see the picture below). KKmart it-yourself Home Center H Kmart To begin with, you should draw a force diagram for the meter stick in the above picture. Then answer the questions by stating the direction of each force and where each force is acting. Normal force: Choose direction--- Tension force: ---Where is it acting?--- -Choose direction--- A ---Where is it acting?--- --Choose direction--- Net force: ---Ch Meter stick weigh Hanger weight: To find the mete but reality is rar Position unce (cm) ---Where is it acting?--- ---Where is it acting?--- ere is it acting?--- o need to make use of torque, which means you're going to need to know the center-of-mass of the meter stick. Ideally this would be at 50 cn d to determine the center-of-mass of the meter stick. Go to the Center-of-mass section and record the needed data in the table below. position Hanger mass Mass uncertainty (g) 50.11 (g) 0.02 No meter stick weight Now it's time to Impossible to determine he hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Le the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass uncertainty is given just below the table. Clamp position (cm) Hanger position Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 AAB a V DII 44 F2 F3 F4 F5 F6 FI FB F9 F10 F11 Equilibrium (Online Läb) HW PHY 211-02: General Physi... (Online Lab) - PHY 211-02: Gene... https://www.chegg.com/homewo... ChatGPT 0.59814453125 - Wolfram|Alpha Now it's time to set up the meter stick with the hanger as shown in the picture above. Go to each Trial (Trial 1 has instructions) section and record the needed data in the table below. Let the clamp be the rotational axis (as such, how much torque will FN create and why?) and then determine the values for the rest of the table. The formula for the meter stick mass uncertainty is given just below the table. Clamp position (cm) Hanger position (cm) Lever for meter stick weight (cm) Lever for hanger weight (cm) Meter stick mass (g) Meter stick mass uncertainty Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 (g) meter stick mass uncertainty = (hanger mass uncertainty x hanger lever) + (hanger mass x position uncertainty × 2) meter stick lever Finally, determine your average value for the meter stick mass & uncertainty as well as the range (the range is based on the average & the uncertainty). Ideally, the mass values you calculated in each trial will fall within the range below. average meter stick mass = max average meter stick mass = min average meter stick mass = ± Center-of-Mass Trial 1 (and instructions) Trial 2 + Trial 3 + Trial 4 Trial 5 20 F6 F5 F4 F3 4 DlI 44 F7 F8 F9 F10 F11 FVZ O WEBOU, prove, a LE LAUND Center-of-Mass To determine the center-of-mass of the meter stick, the meter stick must be balanced on the fulcrum (without the hanger) as shown below. Kmart Do-it-yourself me Center Kmart If you look closely at the picture, you'll notice there's a clamp that's attached to the meter stick and that the clamp is at the fulcrum. In this setup, the position of the clamp corresponds to the center-of-mass of the meter stick. To determine the position of the clamp, you must read the position of the central inside edge of the clamp. In the picture below (which is an example), the central inside edge has a position 37.7 cm. 33 34 35 36 37 39 40 central inside edge Shown below is a picture of the clamp that is located at the center-of-mass of your meter stick. Record the position of the center-of-mass in the data table (located in the first section of this lab). Also determine the uncertainty of your measurement. Remember, the uncertainly is an estimate of how much your measurement could reasonably be off by. This uncertainty will be the uncertainty for all your position measurements. 48 49 50 51 44 80 a F6 FI F8 F2 F3 F4 F5 BBBBBB F9 F10 F11 F1Z %See Answer
Q10: c) 2.564 kg to g e) 25000 µm to mm g) 122.5 m/s to km/h ASAL KA Name: Answer all questions. 1. Convert these quantities to the required units. Show your work a) 9.2 m to cm. i) 4500 g/cm³ to kg/m³ الجـامـعـة الأمـريـكـيـة فـي رأس الخـيـمـة AMERICAN UNIVERSITY OF RAS AL KHAIMAH PHY095 SPRING-2024 HW 1 ID: b) 1234.0 mm to m. d) 521 nm to mm. f) 8500.0 km/h to m/s. h) 75.0 m² to mm² j) 4.50 miles/h to m/s 2 3 4 5 What is difference between basic and derived units? Give one example of each. The speed limit on a highway is 100 km/h. Convert it to meters per second (b) miles per hour. The arc lengths of arc subtended by angle › in a circle of radius r is given by the equation s=re. What are the dimensions of (a) s, (b) r, and (c) Đ? Consider the physical quantities s, v, a, and t with dimensions [s]=L, [v]=L/T, [a]=LT-² and [t]=T. Determine whether each of the following equations is dimensionally consistent. (a) v=2as, (b) s=vt+0.5at; (c) v=s/t, (d) a=v/t², (e) a =vtSee Answer
Q11:11. A 1.2x10³ kg space probe, travelling initially at a speed of 9.5x10 m/s through deep space, fires its engines that produce a force of magnitude 9.2x10' N over a distance of 86 km. Determine the final speed of the probe. 12. A 73 kg skier coasts up a hill inclined at 9.3° to the horizontal. Friction is negligible. Use the work-energy theorem to determine how far along the hill the skier slides before stopping, if the initial speed at the bottom is 4.2 m/s. An ideal spring is compressed 15 cm on a horizontal surface. When released, it accelerates a block (5-g) along the frictionless surface. The block leaves the spring launcher and then travels up a long ramp and stops when it reaches a height of 0.54 m. What is spring constant of the spring? 13. Momentum & Collisions 14. A 5000 kg boxcar moving at 5.2 m/s on a level, frictionless track, runs into a stationary 8000 kg tank car. a) If they hook together during the collision, how fast will they be moving afterwards? b) If the collision is somehow completely elastic determine the speeds of the two cars after the collisions. 15. A 2000 kg car travelling cast at 24 m/s enters an icy intersection and collides with a 3600 kg truck travelling at 10 m/s [S20 W]. If they become coupled together in the collision, what is their velocity immediately after impact (size and direction)? Motion in Space 16. Tethys, one of Saturn's moons, travels in a circular orbit at a speed of 1.1x10* m/s. The mass of Saturn is 5.67x10 kg. Calculate a) the orbital radius in kilometres. b) the orbital period in Earth days. 17. A neutron star results from the death of a star about 10 times as massive as the Sun. Composed of tightly packed neutrons, it is small and extremely dense. a) Determine the escape speed from a neutron star of diameter 17 km and mass 3.4x10™ kg. b) Express your answer as a percentage of the speed of light. Electric Fields & Forces 18. The figure represents a neutral He atom with two electrons on either side of the nucleus, in a well-defined circular orbit of radius 2.64x10¹ m. Calculate the magnitude and direction of the electric force on each electron. De/n19. An electron enters a parallel plate apparatus 10.0 cm long and 2.0 cm wide, moving horizontally at 8.0x10 m/s, as in figure. Calculate a) the vertical deflection of the electron from the original path, b) the velocity with which the electron leaves the parallel plate apparatus. 60x10 -Ho 20 cm 60 x 10²V Special Relativity Figure S Magnetic Fields & Forces 20. An a particle of charge +3.2x10 C and mass 6.7x10 kg first accelerates through a potential difference of 1.2x10² V, then enters a uniform magnetic field of magnitude 0.25 Tat 90°. Calculate the magnetic force on the particle. Wave Nature of Light 21. Two sources are vibrating in phase, and set up waves in a ripple tank. A point P on the second nodal line is 12.0 cm from source A and 20.0 cm from source B. When the sources are started, it takes 2.0 s for the first wave to reach the edge of the tank, 30 cm from the source. Find the velocity, wavelength and frequency of the wave. 22. In an interference experiment, red light with a wavelength 6.0x 10m of passes through a double slit. On a screen 1.5 m away, the distance between the 1" and 11 dark bands is 2.0 a) What was the separation of the slits? b) What would the spacing be, between adjacent nodal lines, if blue light were used? ( m) 23. A spaceship goes past a planet at a speed of 0.80c. An observer on the planet measures the length of the moving spaceship as 40 m. He also says that his planet has a diameter of 2.0x10 m. a) How long does the woman on the spaceship measure the ship to be? b) What does the woman on the spaceship measure the diameter of the planet to be? c) According to the man on the planet, the spaceship takes 8.0 s to reach the next planet in his solar system. How long would the woman on the spaceship say it took?See Answer
Q12:9. A plane is flying in a vertical loop of 1500 m radius. At what speed is the plane flying at the top. of the loop, if the vertical force exerted by the air on the plane is zero at this point?See Answer
Q13:7. Box A (m=2.5 kg) is connected by a rope that passes over a frictionless pulley to Box B (m=5.5 kg), as shown in figure. The coefficient of kinetic friction between box and ramp is 0.54. 25.4 Determine the acceleration of the boxes. BSee Answer
Q14:Dynamics 5. Three blocks of masses m₁-26kg, m₂=38kg, and m3-41kg, are connected by two strings over two pulleys as shown in the figure. a) Determine the acceleration of the blocks. b) Determine the tension in each of the strings. m1 3 m2 m3See Answer
Q15:4. After landing safely on the target the cat tries another projectile apparatus. This time the cat is shot out of a cannon over a 30 m high wall. The cat is launched at an angle of 55°0 and can be assumed to be at ground level during launch. With what speed (in km/h) does it have to be launched to make it approximately 5 m over the wall if the wall is 250 m from the cannon? DynamicsSee Answer
Q16:2. A train is travelling at 23 m/s [E] when it enters a curved portion of the track and experiences an average acceleration of 0.14 m/s² [S] for 95 s. Determine the velocity of the trains after this acceleration.See Answer
Q17:Kinematics 1. Kyle is in his car traveling at a constant speed of 150 km/h down the road. He passes a police car that was stationary at the side of the road. He sees the radar reading and immediately begins accelerating (8 m/s/s) in order to catch the delinquent teenager. How long and how far down the road does he catch Kyle?See Answer
Q18:Calculate the potential temperature for an air parcel that has a temperature of 0 °C at a pressure of 85 kPa. Note that Rd is 287 Jkg-¹K-¹ and Cp is 1004 Jkg¯¹K¯¹. Select one: a. 13 °C O b. -8°C C. -13 °C O d. 0 °C O e. 8 °CSee Answer
Q19:Find the final temperature of a rising air parcel with an initial temperature of 15 °C and a height change Az of 2 km, for an adiabatic process. Note that the specific heat capacity of dry air at constant pressure, Cp is 1004 J kg K-1 and g is 9.8 ms ². Select one: O a. 5°C O b. O C. -19.5 °C e. 34.5 °C O d. 0.5 °C -4.5 °CSee Answer
Q20:If 2 kg of water vapour condenses to liquid, what is the value of the latent heat transferred to air? Note that the latent heat of evaporation (Lv) is 2.5 x 106 kg-¹. Select one: a. 1250 J O b. 1250 kJ O c. 2500 KJ d. 5000 kJ 2500 J 5000 J e. O f.See Answer

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