The common name for the reflection of sound waves is an?

What are the most basic building blocks of all organisms? A. organs B. blood C. cells D. tissue

Noah rides his bike 16 kilometers in 2 hours. What is his average speed? A) 8 miles per hour B) 8 kilometers per hour C) 32 meters per hour

Which two processes would have occurred for a hurricane to form over sea?

Tear-free shampoos are advertised as having a pH similar to that of human tears. What pH would you expect tear-free shampoos to be?

Which of the following is most critical for our study of outter space a: maps of the universe b: technology and computers c: a new method of doing science d: a universal language

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

A long distance runner has an average speed of 4m/s during a race. How far does the runner travel in 20 minutes?