A 2.32 kg ball is attached to a ceiling by a 1.31 m long string. The height of the room is 3.62m. The acceleration of gravity is 9.81 m/s^2. What is the gravitational potential energy associated with the ball relative to a) the ceiling, b) the floor, c) a point at the same elevation as the ball?

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative

Convection occurs when thermal energy is transferred by the movement of