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Question 44424

posted 10 months ago

4) You are jogging along a road at a speed of 4.50 m/s. A car is driving towards you at a speed of 45.0 m/s and ishonking, You hear the car's honking at a frequency of 660.0 Hz. The speed of so und is 345 m/s.
Draw a picture to help you visual the situation. Label it with important information, and state all of the given values in the question. [C 1]а.
b. What is the name of this phenomenon, and why does it occur? [C 2]
C.What is the frequency that the car is honking at? [A 4]

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Question 44425

posted 10 months ago

5) You attach one side of a 0.61 kg rope to wall and send waves down the rope. If the tension in the rope is 1952 N causing the waves travel through the rope at a speed of 80.0 m/s, then what is the length of the rope? [A 4]

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Question 44422

posted 10 months ago

2) Determine the waveform that will result when the following two waves interfere once they meet. Show your work using the grids provided. [C 3]

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Question 44421

posted 10 months ago

Standing sound waves are produced in a tube with both ends fixed.
Sketch the standing wave patterns for the 3rd harmonic. [2 C]
b. If the wavelength of 3rd harmonic is 1.00 m, then calculate the length of the tube, in cm. [T 2]
c. If the wave is traveling at a speed of 343 m/s, then what is the frequency of the 3rd harmonic? [T 2]
d. What is the frequency of the 6th harmonic? How does this frequency relate to the 3rd harmonic? [T 2]

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Question 44423

posted 10 months ago

Waves are lapping up on a beach. Two new waves come every 1.6 s and a swimmer measures a distance of 12 m between six troughs. A bottle bobbing up and down in the waves drops 120 cm from the waves' highest point to their lowest point.
Draw a diagram of the waveform, labelling all the information given. [2 C]
What is the amplitude of the wave?
What is the period of the wave?
What is the wavelength of the wave? (show your thinking below)[2T]

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Question 44426

posted 10 months ago

6) An aircraft is travelling at a Mach number of 0.85 through Earth's atmosphere. If the aircraft is travelling at a speed of 985 km/h, then calculate the temperature of the atmosphere in this area. [A4]

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Question 45057

posted 10 months ago

A. Describe the role of each of the following particles in the structures of protons andneutrons. (2 points)
i. Quarks (1 point)
ii. Gluons (1 point)
B. What forces are at work inside the nucleus of an atom? What keeps the nucleus together?
C. What makes a nucleus unstable? Which atoms tend to be unstable? (1 point)
D. What is lost in an atom as a result of radioactive decay? What equation relates this loss to energy produced? (1 point)

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Question 45055

posted 10 months ago

A. What do the four quantum numbers describe about an electron? (1 point)
B. Match each quantum number with what it defines about an electron's position or energy.
A. The first quantum number, n
B. The second quantum number, /
C. The third quantum number, m,
D. The fourth quantum number, m,
Defines the electron's orbital
Defines the electron's energy level
Defines the electron's spin
Defines the electron's sublevel
C. Identify a set of four possible quantum numbers for the circled electron in manganese(Mn). (There is more than one correct answer.) (1 point)

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Question 45058

posted 10 months ago

Use the periodic table to answer the following questions.
A. What kind of radioactive decay does not cause transmutation? (1 point)
B. The radioactive atom 210/84PO decays by alpha emission. Write an decay.equation showing the decay
C. The radioactive atom 61270 emits a beta particle. Write an point)equation showing the decay. (1
\text { D. Use the nuclear decay reaction }{ }_{90}^{234} \mathrm{Th} \rightarrow{ }_{91}^{234} \mathrm{~Pa}+{ }_{-1}^{0} \mathrm{e} \text { to answer the following questions. (2 }
i. How does the reaction demonstrate the laws of conservation of charge and conservation of nucleon number? (1 point)
(1ii. What is the binding energy of one mole of 23490 th if the mass defect is 10908 g/mol

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Question 45054

posted 10 months ago

A. Match the term with its definition. (1 point)
A. Frequency
The direction and speed at which a wave is traveling
The distance between two adjacent wave peaks
B. Wavelength
C. Velocity
The number of waves passing point in 1 second
B. What is the equation that illustrates the relationship between wave velocity, frequency,and wavelength? (1 point)
C. What are the equations that represent how the energy of an electromagnetic wave is related to the frequency of the wave and to the wavelength of the wave? Define h and c in your equations and give their values. (2 points)

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