The temperature of an object is changed when heat is added to or extracted from it. determine the final temperature (in °c) of a 65.0 g mass of aluminum initially at 60.0°c if 1,050 j of heat energy is extracted from it. the specific heat of aluminum is 900 j/(kg · °c).

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

What are the north and south poles of a solenoid change with?

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.