Scientists use satellites to measure the

a. ocean floor depth.

b. size of underwater features.

c. sea-surface height.

d. ocean's salinity.

which of the following will not increase the strength of an electromagnet made by wrapping a wire around an iron nail

Infrared rays have a shorter wavelength than A. radar waves. B. ultraviolet rays. C. X-rays. D. gamma rays.

What happens to the power of an electric circuit if the resistance is decreased? Explain your answer.

Which describes what an outside observer at rest would observe about a spaceship that speeds up and approaches the speed of light? Time moves faster on the spaceship, and the length of the spaceship decreases.

Is how high or low sound is

3. How is electric potential different than electric potential energy?

Ethan pushes a wooden box across a carpet floor then he pushes the same box across a smooth marble floor why does Ethan find it easier to push the box on the marble floor than carpet floor

Let's now apply our equations for the normal modes of open and closed pipes. On a day when the speed of sound is 345 m/s, the fundamental frequency of an open organ pipe is 690 Hz.

Suppose you are an observer standing on the Moon, looking back at Earth. If the moon is in the waxingquarter phase, what phase of the Earth would you see? A. waxing quarter B. full C. new D. waning quarter E. none; the Earth doesn't have phases

How many chromosomes will an elephant's sperm have?