A crane uses an average force of 5,200 N to lift a girder 25 m. How much work does the crane do on the girder?

In what ways can force affect motion?

1. When light strikes the second medium what are the two things that happen?

Robert has just bought a new model rocket, and is trying to measure its flight characteristics. The rocket engine package claims that it will maintain a constant thrust of 13.8 N until the engine is used up.

How long would it take to get to Saturn at the light speed?

A piano tuner stretches a steel piano wire with a tension of 765 n. the steel wire has a length of 0.900 m and a mass of 6.75 g. part a what is the frequency f1 of the string's fundamental mode of vibration?

What holds the atoms together in a covalent bond

The sun is the centermost star of our solar system. a. True b. False

When an electron moves from a lower to a higher energy level

Which of the following is all matter made of? A. Hot particles B. Cold particles C. Constantly moving particles D. Nonmoving particles

Which of the following has longest wavelength, a) blue light b) red light c) x-rays d) gamma rays?