The term "radiation" refers to hot materials inside the Earth rising towards Earth's surface, cooling, and sinking back down.

A foam material has a density of 175 g/l. what is its density in units of lb/ft3?

2. Calculate the dipole moment of 5 & 3 columb charges separated by a. 10m b. 1micron c. 0.005 nanometres

How is the output of a machine calculated?

What is equilibrium?

Fluorescence commonly occurs when certain materials are illuminated with

What is impossible for a machine to do? A) do a greater amount of work than the amount of work done on the machine B) apply a force in a direction that is different than the direction of the force applied to the machine C) move an object a greater

The phosphorus cycle keeps phosphorus availability naturally low. True or false?

Which best describes nuclear fission? A. A nucleus spontaneously splits and absorbs energy. B. Two nuclei spontaneously combine and absorb energy. C. A nucleus collides with a neutron and splits, releasing energy. D.

Which of the following is an example of conduction? A. A metal spoon becomes warm when placed in a cup of hot tea. B. Campers warm up while sitting by a campfire. C. A dog's bowl of water warms up out in the Sun. D.

Hink about the friction activity. Return to this activity to see it again if you need to. Explain what happened in each of the two demonstrations, and then compare them. Use the terms resistance, vacuum, gravity, velocity, and friction.