30. (a) When a 9.00-V battery is connected to the plates of a capacitor, it stores a charge of 27.0 uC. What is the value of
the capacitance? (b) If the same capacitor is connected to a
12.0-V battery, what charge is stored?

An object weigh 40n in air ,weigh 20n when submerged in water, and 30n when submerged in a liquid of unknown liquid density. what is the density of unknown of liquid?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. choose a realistic problem for which these are the correct freebody diagrams. be sure that the answer that the problem requests is consistent with the diagrams shown. a 1.0 kg block is placed on top of a 2.0 kg block. a horizontal rope pulls the 2.0 kg block across a frictionless floor with a force of 21.0 n. the coefficient between the two blocks is 0.75. does the 1.0 kg block on top slide?