Suppose 1.9 mol of an ideal gas is taken from a volume of 2.8 m3 to a volume of 1.3 m3 via an isothermal compression at 27°c. (a) how much energy is transferred as heat during the compression, and (b) is the transfer to or from the gas?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.

What is the difference between mass density and weight density?