For an isothermal process, the work done by or on a system of ideal gas is equal to the change in what? a. the work done is equal to the change in internal energy. b. the work done is equal to the change in heat energy. c. the work done is equal to change in entropy. d. the work done is equal to the change in pressure.

Which would not reduce the amount of green house gasses in the air

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question