Why do charges build up in a cloud

Gravitational force between two objects depends on

he deflection plates in an oscilloscope are 10 cm by 2 cm with a gap distance of 1 mm. A 100 volt potential difference is suddenly applied to the initially uncharged plates through a 1000 ohm resistor in series with the deflection plates.

Alternating current is normally produced by a A) battery. B) generator. C) both of these. D) neither of these.

When you stand by the side of a pool someone swimming underwater appears to be in a different location than she really is the effect is called what

Which statement is true regarding flexibility? a. joint's range of motion cannot be maintained with age. b. A joint's range of motion will be lost if the joint is not used regularly. c.

The force of air resistance acts to oppose the motion of an object moving through the air. A ball is thrown upward and eventually returns to the ground.

The temperature of a substance during an experiment can be modeled by the function f (x) = - 7.5cos (πx30) + 31.4, where f (x) is the temperature °c and x is the number of minutes into the experiment.

Which of the following are good conductors? A. A rubber tire B. A penny C. A newspaper D. An aluminum soda can E. Water F. Air

Ideentify the two atmospheric layers that contain air as warm as 25 degrees Celsius.

A defensive tackle picks up the 0.5kg football to a height of 0.8m in 0.25s ... 1. calculate the work done 2. calculate the power generated