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A rope goes over a circular pulley with a radius of 7.5 cm. If the pulley makes four revolutions without the rope slipping, what length of rope passes over the pulley?
A battery with an emf of 12.0 V shows a terminal voltage of 10.9V when operating in a circuit with two lightbulbs, What is the battery's internal resistance
Let%u2019s say you have a 1.0 kg mass at rest, struck by a 2.0 kg mass traveling at -2.0 m/s. What is the velocity of the combined mass
A 1,699-kg satellite orbits the Earth in a circular orbit with a period of 6,016 s. How high above the Earth's surface is the satellite's orbit
A 12uF capacitor a 10Kohms resistor a 20.0 volt battery and a switch are all connected in a series , find the voltage on the capacitor after three time constants
If a guitar string has a tension of 20 newtons and has a mass per unit length of 9.8x10^-4 kg/m, with what speed does a pulse travel down the string
A 2.0 kg block is kicked up a wooden ramp that is inclined at a 30? angle to the horizontal. How long does the entire up and down trip take
Next you eliminate the 11 kg mass, place the rod horizontally, and strike one end with a hammer. How much time t would elapse before a microphone at the other end of the bar will detect a disturbance.
A. 0.145 kg baseball is pitched at 42 m/s. The batter hits it horizontally to the pitcher at 58 m/s. What is the change in momentum of the ball
A beam of electrons is first accelerated (from rest) through a region of electric potential difference V=10 keV and then made to go through a slit of width a. What is the value of the momentum (px) of each electron
A uniformly charged wire or radius R1=0.02m runs down the axis of a cylinder of inner radius R2=0.06m. Find the electric field at the surface of the wire
The owner of a van installs a rear-window lens that has a focal length of -0.300 m. How far from the van is the object actually located
A ball thrown straight up from the ground passes a window 5.6 m up. An observer looking out the window sees the ball pass the window again, going down, 2.6s later
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