Gravitation

(a) Choose relationship between the gravitational potential energy, Ep and the gravitational potential, V for a body of mass m placed in a gravitational field. and the mass of the Earth = 5.98 × 1024 kg. Find the radius of orbit A and of B from the centre of the Earth. RA = - RB = (c) Calculate the centripetal acceleration of a satellite in orbit

The mass of the Moon is about 1/81 that of the Earth and its radius is 1/4 of the Earth. Calculate the acceleration due to gravity on the Moon's surface.

8. (1 point) An electron makes a trasition from the second en-ergy level to the seventh energy level in a Berylium ion (Be³+).Where \begin{array}{l} c=3 \times 10^{9} \mathrm{~ms}^{-1} \\ h=6.63 \times 10^{-34} \mathrm{Js} \\ m_{e}=9.1 \times 10^{-31} \mathrm{~kg} \\ e=1.6 \times 10^{-19} \mathrm{C} \\ \varepsilon_{0}=8.85 \times 10^{-12} \mathrm{C}^{2} \mathrm{~N}^{-1} \mathrm{~m}^{-2} \end{array} b) Calculate the wavelength of the photon that is ab-sorbed/emmited by the electron. c) Is the photon emmited or absorbed by the electron in the transition?

Passengers on a carnival ride move at constant speed in a horizontal circle of radius 5.0m,making a complete circle in 4.0 seconds. What is their acceleration? *(1 Point) 8.0 m s^{-2} 15 m s^{-2} 12 \mathrm{~ms}^{-2} 1.3 m s^{-2}

7. (1 point) Calculate the radius, r, of the Bohr orbit for anelectron in the fifth energy level of the Berylium ion (Be+).where \begin{array}{l} h=6.63 \times 10^{-34} \mathrm{Js} \\ m_{e}=9.1 \times 10^{-31} \mathrm{~kg} \\ e=1.6 \times 10^{-19} \mathrm{C} \\ \varepsilon_{0}=8.85 \times 10^{-12} \mathrm{C}^{2} \mathrm{~N}^{-1} \mathrm{~m}^{-2} \end{array}

A cylinder of fixed volume contains 45 mol of an ideal gas ata pressure of 560 kPa and a temperature of 310 K. -) Calculate the volume of the cylinder. (b) A quantity of gas is removed from the cylinder and the pressure of the remaining gas falls to 500 kPa. If the temperature of the gas is unchanged, calculate the amount, in mol, of gas remaining in the cylinder.

Which of the following are two explanations scientists use to explain the redshift seen in light from far away stars? Explanation 1 Explanation 2

Comparing the earth's force of attraction for an object that is a) at the surface of the earth b) 160 km above the earth's surface Use suitable data from the AQA Formula booklet on page 1 to evaluate * \frac{F_{160}}{F_{\text {sufface }}} \text {, where } F_{160}=\text { Force on the object } 160 \mathrm{~km} \text { above the surface of the earth } O 1.050 0.823 O 0.900 O 0.952 O 0.980

2. (1 point) A monochromatic source of light has a wavelength of 640 nm. Calculate it's momentum. If you don't get this in 2 tries, you can get a hint.Answer(s) submitted:

LAB #6: SIMPLE PENDULUM STUDENT LEARNING OUTCOMES • Determine g, the acceleration due to gravity, using a pendulum. • Conduct a pendulum experiment using household items. After doing the experiment as it says in the lab and calculating all the data and answering all the questions please write a lab report. All the data and the tables should be in the report. Also, all the instructions in the lab report are clear. Please take pictures for your own experiment. Informal lab: Include a series of questions listed in the lab instructions, and images detailing your experiment tables, plots, or pictures). Questions are in bold and labeled with >Q#: You should write your an- answers so they work as standalone statements. For example: if the question asks "What is the force of tension?" your answer should read "The force of tension of a string with a 500 g weight hanging from it is 4.9 N "0.1 N," not "It is 5 N." One-word answers like "No" are not acceptable. LAB 3 REQUIRED FOR THIS IS ADDED IN REFERENCE SECTION. YOU NEED TO DO THE LAB FIRTS AND THEN MAKE A LAB REPORT