The multiple reflection of a single sound wave is a/an
a. echo.
b. reverberation.
c. refraction.
d. diffraction.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery