5. How many kilowatt-hours of energy would be used by a 40 W bulb that runs for 10 hours every

day during the course of one year?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?