A clumsy astronaut falls into a crater on the moon. The crater is 13 meters deep. How long will the astronaut have before he hits the ground?

The hormone that produces male secondary sex characteristics is

Which refers to the change in wavelength that occurs when an object moves toward or away from a light source?

In this movable pulley, the input force is 20 N. What is the output force? A. 10 N B. 20 N C. 40 N D. 80 N

A quarterback back pedals 2.2 meters southward and then runs 6.8 meters northward, what is the distance, the magnitude, and direction?

How are neutral atoms converted into anions?

Since Earth is attracted to the sun, why doesn't it fall into the sun? A. Because it has too much mass to move toward the sun B. Because it has sufficient tangential velocity C. Because there is an equal force holding it away from the sun D.

In what order do the earth, sun, and moon line up in a totla solar eclipse

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

How are weathering, erosion, and deposition related to the rock cycle

How do you know if an object is moving?