What is the application for reflection of waves?

8. Which sentence best describes how fast charge muves through an electric circuit? a. Charge moves very fast, faster than any human can run. b. Charge moves very slowly, slower than the proverbial snail. olan. . Tibained but

An ideal spring is hung vertically from the ceiling. when a 2.0-kg mass hangs at rest from it the spring is extended 6.0 cm from its relaxed length. an upward external force is then applied to the block to move it upward a distance of 16 cm.

A small car collides head on with a large truck. Is the magnitude of the force exerted by the car on the truck greater than, less than, or equal to the magnitude of the force exerted by the truck on the car?

In air an object weighs 15N. when immersed in water it weighs 12N. when immersed in another liquid it weighs 13N. determine the density of d object and that of d other liquid

What has thermal, chemical, and electrical energy

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.

As an astronaut travels towards Earth, her weight A. decreases because gravity decreases. B. decreases because her mass decreases. C. increases because gravity increases. D. remains the same because her mass remains the same.