A 2.0 mol sample of an ideal gas is kept at 2.0 °C during an expansion from 20 L to 8.0 L. How much work is done on the gas during the expansion?​

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?

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?