Calculate the energy in kilowatt hours used by a heater that operates continuously for 30 minutes. the heater has a power rating of 3000 w.

Abaseball has a mass of 0.145 kg and approaches a bat at 40.0 m/s. after it is hit, the ball leaves the bat at 50.0 m/s directly back. find the impulse of the bat on the ball. 7.25 kg*m/s 13.1 kg*m/s 5.80 kg*m/s 1.45 kg*m/s

Why don't you see your reflection in water with waves or repples

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?