A switch that connects a battery to a 30μf capacitor is closed. several seconds later you find that the capacitor plates are charged to ±30μc. part a what is the emf of the battery?

Does temperature increase or decrease with altitude in the thermosphere

Wind is realted to the movement of warm and cold air masses. Which kind transfer does this represent? A.) Convection B.) Conduction C.) Radiation D.) Absorbption

Two + 1C charges are separated by 3000m. What is the magnitude of the electric force between them?

How does the pKa values of an ionizable side chain compare when the amino acid is free versus when it is in a polypeptide chain?

Choose the correct statement of Kirchhoff's voltage law. A) If one travels around a closed path adding the voltages for which one enters the negative reference and subtracting the voltages for which one enters the positive reference, the total is

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

A long distance runner has an average speed of 4m/s during a race. How far does the runner travel in 20 minutes?