How much energy is received by earth per second per unit area?

What is a sentence using dimensional analysis

Astronomers now classify pluto as really just a large member of

Suppose you wanted to improve a moving. coil microphone so that it was more sensitive (e, so that it outputs a stronger induced emf for a given sound intensity). Which of the following will improve the sensitivity? a.

When leaping at an angle of 47.7° above the horizontal, a froghopper reaches a maximum height of 42.4 cm above the level ground.

Do EM Waves need matter in order for them to go from one place to another?

A wave with a frequency of 30 Hz has a wavelength of 40.5 m. How fast is the wave traveling?

A soccer ball is sitting in the middle of a soccer field during a game. When the referee blows his whistle, one of the players runs toward the ball and kicks it as hard as he can.

A body with v=20m/s changes its speed to 28m/s in 2sec. its acceleration will be

Charge: A piece of plastic has a net charge of + 2.00 μC. How many more protons than electrons does this piece of plastic have? (e = 1.60 * 10-19 C)

How much heat is needed to raise the temperature of 6g of water by 18oC?