A 0.80-?m-diameter oil droplet is observed between two parallel electrodes spaced 11mm apart. The droplet hangs motionless if the upper electrode is 32.0V more positive than the lower electrode. The density of the oil is 885kg/m3.What is the droplet's mass?What is the droplet's charge?Does the droplet have a surplus or a deficit of electrons? How many?

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk,in meters?

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.

Why does gravity have a lesser than grater effect on higher altitudes?