Q. One mole of an ideal gas does 1408 J of work on the surroundings as it expands isother- mally to a final pressure of 1.6 atm and vol- ume of 29 L. Find the initial volume.
Q. A spherical water drop 1.30 µm in diameter is suspended in calm air owing to a downward-directed atmospheric electric field E = 512 N/C.
(a) What is the weight of the drop?
(b) How many excess electrons does it have?