1. A ray of light traveling from air into crown glass strikes the surface at an angle of 30 degrees. What will the

angle of refraction be?

Sound waves have 4 basic properties including amplitude, wavelength and a) distance b) media c) speed d) pitch

If wavelength is kept constant, which increases as the speed of a wave increases?

A guitar string produces 3 beats/s when sounded with a 352-hz tuning fork and 8 beats/s when sounded with a 357-hz tuning fork.

Some make-up removal products suggest shaking the solution before using it. Why would the manufacturers provide this suggestion? A. The solution evaporates easily. B. The solution separates naturally. C.

Two balls move away from each other, both traveling at 7 m/s. One has a mass of 2 kg and the other has a mass of 3 kg

Which statement about how light travels is true? A Light waves need a medium to travel, and they travel at the same speed even if the light source is moving.

Explain why the car reaches a top speed even though the thrust Force remains constant at 3500N

4. A helicopter is flying at a height of 1.5km. If it has 50MJ of G. P. E., what is the mass of the helicopter?

Unless otherwise posted, what is the speed limit in a school zone? florida

If you put in 10 J of work to push 1 c of charge against and electric field what will be its voltage with respect to its starting position? when released, what will be it's kinetic energy if it flies past it's starting position?