PHY2048 Final Exam ReviewMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1)A baseball is located at the surface of the earth. Which statements about it are correct? (There maybe more than one correct choice.)1)
A)The earth exerts a much greater gravitational force on the ball than the ball exerts on theearth.B)The gravitational force on the ball is independent of the mass of the earth.C)The gravitational force on the ball due to the earth is exactly the same as the gravitationalforce on the earth due to the ball.D)The gravitational force on the ball is independent of the mass of the ball.E)The ball exerts a greater gravitational force on the earth than the earth exerts on the ball.
2)A satellite is orbiting the earth. If a payload of material is added until it doubles the satellite's mass,the earth's pull of gravity on this satellite will double but the satellite's orbit will not be affected.2)
3)A small planet having a radius of 1000 km exerts a gravitational force of 100 N on an object that is500 km above its surface. If this object is moved 500 km farther from the planet, the gravitationalforce on it will be closest to3)
4)By how many newtons does the weight of a 100-kg person change when he goes from sea level toan altitude of 5.0 km if we neglect the earth's rotational effects? (The mean radius of the Earth is6.38 ×106m, G=6.67 ×10-11N ·m2/kg2.)4)
5)Beings on spherical asteroid ̓have observed that a large rock is approaching their asteroid in acollision course. At 7514 km from the center of the asteroid, the rock has a speed of 136.0 m/s andlater at 2823 km it has a speed of 392.0 m/s. Use energy conservation to find the mass of asteroid ̓.You can neglect any effects due to the parent star of the asteroid. (G=6.67 ×10-11N ·m2/kg2)5)
6)A leaky faucet drips 40 times in 30.0 s. What is the frequency of the dripping?6)
7)A 88.6 kg bungee jumper jumps off a bridge and undergoes simple harmonic motion. If the periodof oscillation is 11.2 s, what is the spring constant of the bungee cord?7)
8)An object undergoing simple harmonic motion has a maximum displacement of 6.2 m at t=0.0 s. Ifthe angular frequency of oscillation is 1.6 rad/s, what is the object's displacement when