The wavelength of the light produced by the laser is determined by the:

a. type of energy added to the active medium

b. length of the tube in which the laser is produced

c. composition of the active medium

d. diameter of the semi-transparent mirror

Protons and neutrons are found within the nucleus of an atom

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)

Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil