Author Question: The three main types of radiation produced by the sun are A) radio, infra-red, and visible. B) ... (Read 37 times)

Deast7027 · **on:** Jul 29, 2018

The three main types of radiation produced by the sun are

A) radio, infra-red, and visible.
B) infra-red, visible, and ultra-violet.
C) visible, radio, and gamma.
D) gamma, visible, and ultra-violet.
E) alpha, beta, and gamma.

Question 2

The basic physical principal principle that explains the operation of rocket engines is

A) the atomic hypothesis.
B) the law of force pairs.
C) Galileo's principle of falling.
D) the law of inertia.
E) Actually, rockets are unexplainable.