how can you tell by hitting a body with a plastic rod if it has a crystalline or amorphous composition

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

In a copper wire, a temperature increase is the result of which of the following