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When its coil rotates at a frequency of 302 Hz, a certain generator has a peak emf of67 V.
1. Decide the frequency of the coil's rotation when the peak emf of the generator is 170 V.
2. What is the peak emf of the generator when its coil rotates at a frequency of 46Hz?
A tennis ball of mass m=.080kg and speed v=30m/s strikesa wall at a 45 degree angle and rebounds with the same speed at 45degrees
Water flowing in a horizontal pipe is at a pressure of 1.55 105 Pa at a point where its cross-sectional area is 6.00 m2. Find the water's speed in the wider pipe
What mass of water (at 4.0 C) can be contained in a rectangular box whose dimensions are 10 cm by 5.00 cm by 1.00 cm? The density of water at 4C is 1.000 X 10 kg/m-cubed.
What is the rate at which water flows outA large tank supported high off the ground is filled with water to a depth of 2.05 m. What is the rate at which water flows out, in cubic meters per second
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A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the arrow
You're standing in waist-deep water with your eyes 0.44 m above the surface. A fish is swimming 0.55 m below the surface. How far (horizontally) from you is the fish
Two charged pith balls are suspended on very light 10.7 cm strings. Each has a mass 11.0 g. In stability, the total angle between the strings is 37 degrees. Draw the free body diagram for one of the pith balls and clearly label all forces with magnit..
A constant-pressure insulated piston-cylinder device contains 1.7 kg of saturated liquid-vapor mixture of water at 150 kPa with an initial quality of 0.2. Calculate the change in energy of the contents
A blue car with mass mc = 480.0 kg is moving east with a speed of vc = 23.0 m/s, obtain the magnitude of the initial momentum of the car
The speed of a certain electron is 350 km/sec. If the uncertainty in its momentum is 0.010%, what uncertainty in its location must be tolerated
A massless pan hangs from a spring that is suspended from the ceiling. When empty, the pan is 50cm below the ceiling. What is the pan's distance from the ceiling when the spring reaches its maximum length
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