You were given 20 grams of nitrogen gas and 20 grams of liquid nitrogen. compare the
thermal energy and temperature of the two samples.

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

What is the most important factor in determining climates.

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied