physics final

what causes light to refract when it enters a lens? what happens to the speed of light?

Lenses serve to refract light at each boundary. As a ray of light enters a lens, it is refracted; and as the same ray of light exits the lens, it is refracted again.

the use of fiberglass insulation is the outer walls of the building is intended to minimize heat transfer through what process?

conduction

energy transferred as heat always moves from an object

high temp to low temp

which way does heat energy flow?

hot to cold

destructive interference

is a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction.

constructive interference

is a type of interference that occurs at any location along the medium where the two interfering waves have a displacement in the same direction

explain what happens when two waves interfere w each other

is the phenomenon that occurs when two waves meet while traveling along the same medium.

all of the following are widely used temperature scales except

joules

3 primary colors of light

red green blue

like charges __ repel and opposite charges __

repel, attract

on a sunny day at the beach, the reason the sand gets so hot and the water stays relatively cool is attributed to the difference in which property between water and sand?

specific heat

as two charges are put closer together, what happens to the force between them?

the force between the charges get stronger

can electromagnetic waves travel in a vacuum? why or why not?

they can because they do not require a medium

electromagnetic waves travel as transverse or longitudinal

transverse