What is the frequency of a wave that passes a given point 412 times in 4.0 seconds? A. 0.0097 s
B. 103 Hz
C. 408 s
D. 1650 Hz

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

The softest and hardest minerals are: softest hardest