How many gallons of water per day does the average American family of 4 use?

A). 80 gallons

b). 160 gallons

C). 240 gallons

D). 320 gallons

What is a natural form of pollution?

What's the acceleration if the average velocity is 3.5 and the time is 8.7

A sled is moving at a constant speed down a surface inclined at 45 degrees with the horizontal and travels 30meter in 4 seconds. calculate the vertical velocity of the self at the end of 4 seconds

How does scale influence the physical and chemical properties of a substance

Is it possible for a change of physical state to occur in an isolated system?

Which statement is true about a polarized object? A) It gains electrons and becomes negatively charged. B) It gains protons and becomes positively charged. C) The number of positive and negative charges can be the same. D) It has to be a metal.

Define the law of conservation of momentum in one sentence

A shopping cart rolls from x=19.9m to x=5.40m with an average velocity of - 0.418m/s. How much time did it take? (unit=s)

Where does the energy of a nuclear power plant come from?

When the vapor pressure of a liquid is equal to the atmospheric pressure the liquid?