Which of the following is closest to the speed of sound in air at sea level?

a. 3 m/s

b. 30 m/s

c. 330 m/s

d. 3300 m/s

The object shown is made of glass. What is it called? convex lens pyramid prism concave lens

An iron bar has more mass than a plastic bar of the same volume. so the iron bar will have greater inertia. a. True b. False

When a light bulb is lit, not all of the energy is transformed into light. Some of the energy is transformed into what?

Dropping a stone from a height is work or not?

Which of the following statements are true? The internal resistance of a battery decreases with decreasing temperature. A battery is a device that produces electricity by transforming chemical energy into electrical energy.

Why do marine west coast climates have much precipitation

Wright true or false: 1. A baseball has more momentum than a tennis ball traveling at the same speed. 2. A light ball has more inertia than a heavy ball 3. The less momentum a bowling ball has, the easier it is for that ball to knock down pins. 4.

The interference of two sound waves of slightly different frequencies produces

8. A force of 80 pounds on a rope is used to pull a box up a ramp inclined at 100 from the horizontal. The rope forms an angle of 330 with the horizontal. How much work is done pulling the box 25 feet along the ramp?

A raindrop has a mass of 5.4 * 10-7 kg and is falling near the surface of the earth. Calculate the magnitude of the gravitational force exerted (a) on the raindrop by the earth and (b) on the earth by the raindrop.