8. a 30 kg wagon with a 70 kg silly boy (not named robert) starts from rest at the top of a 10 meter
high hill and rolls down to the bottom of the hill where they hit, and compress, a heavy spring which
brings them to rest. ignoring friction, find the following:

In the image, the arrow is pointing to a celestial object. which attribute disqualifies the object from being a planet?

What accounts for an increase in the temperature of a gas that is kept at constant volume? a. energy has been removed as heat from the gas. b. energy has been added as heat to the gas. c. energy has been removed as work done by the gas. d. energy has been added as work done by the gas.

The release of energy by the nucleus of atom as a result of nuclear fission is radiant energy true false