A jeweler wants to authenticate if a stone brought in by a client is a real diamond. He shines a laser at the diamond with an incident angle of 42.3" A table listing the indices of refraction in the Snell's Law PhEt. What should the angle of refraction be?

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

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.

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?