If a liquid or gas has regions of high temperature and low temperature, then the atoms will move in a predictable direction. We call this a CONVECTION CURRENT.

The atoms in a LIQUID or a GAS are .
When a lot of atoms in a liquid or a gas move in the same general direction it is called a .
The water on our planet is also called the .
Currents that are caused by uneven temperatures are called .
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Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Acid rain is caused by human activity. select the best answer from the choices provided t f

Asquare isothermal chip is of width w=5 mm on a side and is mounted in a substrate such that its side and back surfaces are well insulated; the front surface is exposed to the flow of a coolant at tinf=15 °c. from reliability considerations, the chip temperature must not exceed t=85 °c. if the coolant is air and the corresponding convection coefficient is h=200 w/m2 x k, what is the maximum allowable "power" of the chip? if the coolant is a liquid for which h=3000 w/m2 x k, what is the maximum allowable power of the chip?