a boy stands 80m in front of a tall cliff and produces sound by clapping two planks together. A girl standing next to him time the return of the echo at 0.5. how fast does sound wave travel in this place

How can we get a clue as to the temperature of a star

Can an object be moving for 10 seconds and still have zero displacement?

A 10 m long glider with a mass of 680 kg (including the passengers) is gliding horizontally through the air at 30 m/s when a 68 kg skydiver drops out by releasing his grip on the glider.

Will give brainliest to best answer. If you were asked which type of power, generated from a non-renewable resource, has the least negative effect on the environment, you would chose A. geothermal power. B. hydro power. C. nuclear power. D.

Which statement best describes how work and power are different? To find work we need to know force and distance; to find power we need to know force and velocity.

One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate.

Three asteroids have exactly the same amount of mass. The distance from asteroid A to asteroid B is 300 km, the distance from asteroid B to C is 400 km, and the distance from C to A is 100 km.

what determines the quality of a conductor

If the mass of an object increases, predict what will happen to the coefficient of sliding friction.

2x-4≤12 A x≤8 B x≤12 C x≤16