During refraction, what happens to a wave when it travels from one medium to another?
the wave travels in the opposite direction.
the wave changes speed.
the wave moves in the same direction.
the wavelength increases.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat