Echolocation is based on the use of sound

Two satellites, X and Y, are orbiting Earth. Satellite X is 1.2 * 10^6 m from Earth, and Satellite Y is 1.9 * 10^5 m from Earth. Which best compares the satellites? Satellite X has a greater period and a faster tangential speed than Satellite Y.

The layers of gas that surround the Earth

What are five types of organisms That can reproduce asexually

A 20.0 kg block of ice is sitting in a cooler. The temperature of the ice is 0.0_C when it is put into the cooler. As it melts, how much heat does the block of ice absorb? a. 8.68 X 10^4 J c. 2.36 X 10^4 J b. 6.68 X 10^6 J d. 3.68 X 10^6 J

What would happen if a lightning rod on the roof of a house did not have a wire to the ground? Why?

Using 6400 km as the radius of Earth, calculate how high above Earth's surface you would have to be in order to weigh 1/16th of your current weight. Show all work leading to your answer OR describe your solution using 3 - 4 complete sentences.

Which of these could occur if a switch is closed? A. A light bulb will light up. B. A hair dryer will turn off. C. A computer will shut down. D. B and C

When you throw a ball the work you do to accelerate it equals the kinetic energy the ball gains?

Old-fashioned heating systems sent steam into radiators in each room of a house. in the radiators, the steam condensed back to water. analyze this process and explain how it heated a room.

If a space ship is traveling with a constant acceleration of 75 m/s^2 and travels for three weeks, how far did it travel and what was it's velocity before it stopped?