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Which statement correctly describes both gases and liquids?"

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.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

How many neutrons does an element have if its atomic number is 50 and its mass number is 166