Four-point charges of q = 2.50 x 10^-6 C are situated at the corners of a square side of 1.00 m. Find the resultant force that a charge of -3.0 x 10^-6 C will experience when placed at the center of the square.

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.