A TV has a power of 65 watts and an efficiency of 70 percent. How much power is wasted as heat?

A.19.5 W

B.2.2W

C.0.9W

D.45.5W

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

How is the gravitational force related to the distance between two objects?

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished