1-12 are multiple choice. 13-15 are free response

1. The below diagram illustrates a wave passing in 20 seconds. What must be the the frequency of the wave? 2. Which of the following is a FALSE statement? Momentum and kinetic energy.r are conserved in both elastic and inelastic collisions An obiect at rest has inertia Angular momentum is greater when there is more mass distributed awaytrom the axis 0t rotation Momentum is a vector 3. The length of a helicopter blade is about 62 ft. ll it is rotating at a rate of 225 revolutions per minute. what must be the linear speed at the tips of the blades? 4. An angular displacement of 58 radians is in degrees. 4 POINTS O 1.0 3300 0.16 9.2 5. Earth has a radius of 6400 km. While standing still, you are actually 4 POINTS moving with the Earth as it rotates! When the Earth makes a 43 degree rotation, how far will you have traveled? 150 km 280000 km 940 km 4800 km 6. Which of the following would triple the gravitational force occurring 4 POINTS between two masses? Increasing both masses by a factor of three Increasing the distance by a factor of 3 Decreasing the distance by a factor of 3 Increasing one of the masses by a factor of three 7. If there were no ., the periodic motion of a pendulum would 4 POINTS continue endlessly. This demonstrates a simple harmonic motion. Electrical energy loss due to gravity Thermal energy loss due to light Chemical energy loss due to loss of mass Mechanical energy loss due to friction8. Consider a 1200 ft long pendulum oscillating inside a very tall building. If 4 POINTS this pendulum experiences simple harmonic motion, what must be the period of its oscillation? 38 s 6.1 s 0.026 s 120 s 9. A water wave in a wave pool passes by once every 5 seconds. The 4 POINTS distance between waves is 5 meters. Calculate the speed of the wave. O 0.2 m/s 1 m/s 5 m/s 25 m/s 10. When waves interfere, their amplitudes combine to form a resulting 4 POINTS wave. After separating, the waves return to their original shape. This is a demonstration of Diffraction Superposition O Constructive interference Reflection 11. Which of the following do all types of waves have in common? 4 POINTS O They all carry energy from one location to another. O They all require a medium to travel. They can all travel through outer space. They all travel in the same direction as the individual particles of the medium being disturbed by the wave.12. Which of the following is a FALSE statement about electromagnetic radiation? All electromagnetic radiation can be modeled using the wave equation it 2 fit All electromagnetic radiation are created from the disturbances of charged panicies l[infy high energy electromagnetic radiation have waveparticle duality: Gamma rays are a high energy electromagnetic radiation that can cause the most damage to living cells Essay (3 Questions) Type your answer into the field below. 13. A 2?Dg sphere rolls to the right at [1.80 mils and collides elastically with a 610g ball that was rolling at 0.45 W3 to the left. If the 130 g sphere is rolling at 0.93 ms to the left after the collision. what must be the final speed and direction of the 610 g sphere? 14. A 250 kg satellite orbits around an unknown planet with a linear speed of 4500 mph. The satellite is 5800 m away from the center of the planet. What must be the mass of the planet? Hint'The gravity force keeping the satellite in orbit is equivalent to the gravity lorce between the satellite mass and the mass 01 the planet. {i} E X; X' ft 15. A 0.25kg pebble is released from rest and falls toward Earth. After 2.50 s, what is the magnitude of its momentum? n t