What is not an example of refraction. remember to not give me an example.

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

How does the entropy of steam compare to the entropy of ice?

Current vs. forcewhat type of relationship does this graph show?