Read the question and type your response in the box provided. Your response will be saved automatically. Carly is investigating the effects of heat transfer on molecular motion. She pours cold water into a beaker, places the
beaker on top of a heat source, and turns on the heat. Her set up is shown.
100
Without heat
With heat
Identify and describe the method of heat transfer that Carly is investigating. Describe the effect of the heat transfer
on the motion of the water molecules at the top and the bottom of the beaker.
B I y II

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j