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In 13.6 s, 220 bullets strike and embed themselves in a wall. The bullets strike the wall perpendicularly. Each bullet has a mass of 4.87E-3 kg and a speed of 1245 m/s. What is the average change in momentum per second for the bullets?
What current is in the primary circuit. A proton moves at a speed of 8.0 103 m/s as it passes through a magnetic field of 0.55 T. Find the radius of the circular path. Note down that the charge carried by the proton is equal to that of the electron..
At what average rate does the force from the cable. A falling skydiver has a mass of 54.5 kg. What is the magnitude of the skydiver's acceleration when the upward force of air resistance has the magnitude that is equal to one-fourth of his weight.
A capacitor is consists of two short sections of parallel wires in air. One wire is found to be of the voltage of 56 V, What is the capacitance of the two wires
a ball is thrown horizontally from a 20-m-high building with a speed of 5.0 m/s , Make a sketch of the balls trajectory
A source delivers an AC voltage of the form ?v = 92.2 sin (60?t), Find the rms voltage of the source
If the gas pressure and volume both double, what's the change in internal energy, find the internal energy of 1mol of oxygen at 291K and 1.0 atm
find the magnitude and direction of the impulse delivered to the ball by the floor.
A steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. The crate slides down a long ramp that is inclined at an angle of 39 degrees above the horizontal. The crate has mass 244 kg .
A 2-kg book with no initial velocity slides down an inclined plane with an angle of 20 degrees a total of 2 meters. The force of friction does 10 Joules of work, what is the final kinetic energy of the system as the book reaches the bottom of the ..
A 7.05 10-3-kg plastic ball with a charge -0.156 µC is suspended from a ceiling with an insulating thread such that the ball stays between the plates of the capacitor. What is the magnitude of the electric field between the plates
Copper wire (resistivity 1.7x10-8 italic capital omega space straight m , circular cross section with radius 2.34 mm) is used to form 2 thousand circular loops of wire in a solenoid
the driver sees a child standing on the road. She takes .80 s to react, then steps on the brakes and slows at 6.5 m/s squared. Explain how far does the car go before it stops?
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