A basketball rolls off a deck that is 3. 2 m from the pavement. The basketball lands 0. 75 m from the edge of the deck. How fast was the basketball rolling?.

An object is located 30.0 cm from a concave mirror. the focal length is 15.0 c,. what is the image distance? a. 30.0 cm b. -10 cm c. 10.0 cm d. -30.0 cm

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.