Help! Physics question!
Which of the following represents an example of refraction?
A. The passenger-side mirror on your car says, "Objects may be closer than they appear."
B. You go to a carnival and buy a fiber-optic flashlight that emits different colors of light from the tips of the skinny fibers.
C. You drop your watch in a shallow pool and bend down to pick it up. You reach directly towards it, but your hand misses it.
D. As you move away from your bathroom mirror, your image seems to get smaller.

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. determine whether this is a physical change or a chemical change. explain your answer

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp