An echo is an example of

A. Refraction

B. Diffraction

C. Reflection

D. Destruction

In Einstein's Thoery of Relativity. What did he believe was the relationship between energy and malter?

A person jogs 40 km in 32 minutes then 20 km in 22 minutes and finally 10 km in 16 minutes what is his average speed in in per minute

Which form of energy are x rays and ultraviolet light?

Imagine you can take all the atoms in a single drop of water and put them on a single line as closely packed as they can be. How long would that line be in meters? There is approximately 1022 atoms in a droplet of water. A.

A popcorn-maker transfers 250 J of energy into other energy stores every second. What is its power?

Which actions are evidence that a chemical reaction has occurred? Check all that apply. A: a change in color B: the formation of a precipitate C: a clear liquid becoming cloudy D: a change in shape E: the formation of bubbles F: the formation of

Which sphere forms Earth's outermost layer? Atmosphere Biosphere Cryosphere Hydrosphere

an 100kg object traveling at 50m/s collides (perfectly inelastic) with a 50kg object initially at rest. what is the sum of the momentum of both objects prior to the collision?

A train moves at constant velocity of 50km/h. how far will it move in 0.5h?

Which process best describes part of a scientific investigation? O designing a solution O evaluating the conclusion O evaluating the solution O identifying the conclusion