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An empty parallel plate capacitor is connected between theterminals of a 7.5-V battery and chargedup. The capacitor is then disconnected from the battery, and thespacing between the capacitor plates is doubled. As a result of this change, what is the new voltage between the plates of the capacitor?
An airplane traveling north at 400 m/s is accelerated due east at a rate of 50 m/s2 for 6 s. what is the final speed of the plane
A ball is thrown horizontally from the top of a 75 m building and lands 130 m from the base of the building, What is the vertical component of the velocity just before the ball hits the ground in m/s
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 38.0 ° above the horizontal, By how much does the rocket clear the top of the wall
A thin stream of water flows smoothly from a faucet and falls straight down. What is the vertical distance h between these two points
High-speed photos of a 240 flea jumping vertically show that the jump lasts 1.4 and involves an average vertical acceleration of 100, What's the change in the flea's momentum during its jump
A storm window having the same thickness of glass is installed parallel to the first window, with an air gap of 6.7 cm between the two windows. What now is the rate of energy loss
The air inside a bicycle tire pump has 193 joules of work done on it as 77.3 joules of heat is conducted away from it. What is the change in internal energy of the air
The two hot-air balloons in the drawing are 48.2 m and 61.0 m above the ground. A person in the left balloon observes that the right balloon is 13.3° above the horizontal.
An ideal gas is confined to a cylinder by a piston. The piston is slowly pushed so that the gas temperature remains at 20 degrees C. find the entropy change of the gas
Suppose he hits the ball with a speed of 29 m/s at an angle of 26° above the horizontal. Explain how long was the ball in flight? How far did it travel?
In the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two
A circuit consists of a 12.0-V battery connected to three resistors (44ohm , 17ohm and 110ohm ) in series. Find the current that flows through the battery.
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