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Describe the relationship between temperature, density, and movement of air in a convection cell

Can a machine be more than 100% efficient? yes no impossible to determine

1. What is the Formula's for Kinetic and Potential Energy?

1. Rocky lifted a 300 newton rock 2 meters off the ground and carried it 2 - more meters to his rock garden. How much work did Rocky do on the rock?

The block moves a distance L up the incline. The block does not stop after moving this distance but continues to move with constant speed.

An elevator weighing 15000 newtons s raised in 50 seconds. If the distance between stories is 3.0 meters how much power is required of the motor?

Given the diamond shape of a baseball field and the speed with which baseballs are hit, why is it harder for a hitter to hit a homerun to center field than to right or left field? (Consider the effect of air drag on fast moving projectiles.)

What is the arrangement of the forms of electromagnetic radiation according to their wavelengths?

A helium atom consists of two protons, two electrons, and two neutrons. In the helium atom, the strong force is a fundamental interaction between the (1) electrons, only (2) electrons and protons (3) neutrons and electrons (4) neutrons and protons

What is the term for water droplets that have accumulated in the air until they have become so heavy they have fallen back to earth?