The strength of the gravitational force between two objects depends on two factors: mass and distance. Suppose that two objects attract each other with a gravitational force of 16 units. If the distance between the two objects is doubled, then what is the new force of attraction between the two objects? A) 4 units
B) 8 units
C)16 units
D)64 units

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?

(8%) problem 12. a bowling ball of mass mb 3 kg 's rolled down the lane with a velocity ofy-2/ m s lt strikes a single remaining pin mp 0.93 kg head on. after the collision the bowling ball has a velocity (in the same direction) of v2 1.1 m/s. = ▲ 33% part (a) write an expression for the velocity of pin in the horizontal direction after the impact, im ,, 33% part (b) what is the pins speed in ms? 33% part (c) assuming the coefficient of friction s μ,-0.1. how far in meters could the pin slide before stopping if it doesn't topple?