1. A piece ofglass has an index of refraction of n = 1.52. What is the speed of light as it passes through the glass? ( c= 3.0 x 10° m/s)

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.

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

What are atoms of the same element with varying number of neutrons