An echo is heard when sound is reflected off a surface. Which of the following best explains this phenomenon?

Which best explains why people see carrots as orange

Deimos, a satellite of mars, has an average radius of 6300 m. if the gravitational force between deimos and a 3 kg rock at its surface is 2.5x10-2 n, what is the mass of deimos?

The mass of Pluto is 1.303 times 10 to the 22 power kilograms and it had an acceleration of gravity of 0.0630 grams. What is the radius of Pluto at the surface?

Why was glass or plastic used to separate the filings from the magnets in the experiments? The experiment required me to place a bar magnet on a table, then place a sheet of glass or plastic over the magnet before sprinkling the filings over it.

A certain string can withstand a maximum tension of 39. N without breaking. A child ties a 0.43 kg stone to one end and, holding the other end, whirls the stone in a vertical circle of radius 0.

At what temperature did the substance in the test tube into a solid?

What occurs when the velocity of Earth is doubled? a. The orbit of Earth around the Sun becomes smaller b. The orbit of Earth does not change c. The Earth escapes the Sun d. The orbit becomes more elliptical

When is a body said to be at rest

27. Calculate the impulse when an average force of 10 N acts on a cart for 5.0 s.

A boy on a bicycle is resting at the top of a hill then he rides his bicycle down the hill describe how the boy potential and kineti energy differ at the top middle and bottom of the him