Apiano of mass 852 kg is lifted to a height of 3.5 m. how much gravitational potential energy is added to the piano? acceleration due to gravity is g = 9.8 m/s2.

Which changes of state do the labels represent? a: b: c:

How will the system respond to a temperature increase?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?