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A bullet of mass 12 grams is fired into a large block of mass 1.5 kg suspended from light vertical wires. The bullet imbeds in the block and the whole system rises 10 cm. Find the velocity of the bullet just before collision?
A small rock moves in water and the force exerted on it by the water is given by equation . The terminal speed of the rock is measured and found to be 1.9 . The rock is projected upward at the initial speed of 6.4 . You can ignore the buoyancy for..
A uniform, thin, solid door has height 2.40 m, width 0.900 m, and mass 22.5 kg. Find its moment of inertia for rotation on its hinges
A 1945-W electric hair dryer is designed to work in the United States, where the ac voltage is 120 V rms. What power is dissipated in the hair dryer
Some asteroid fragments are large enough to not completely burn up in the atmosphere and they end up on the surface of the Earth. What is the chief cause of radioactivity
A 1.0 ball hangs from the ceiling of a truck by a 1.0--long string. The back of truck, where you are riding with the ball, has no windows and has been completely soundproofed. The truck travels along an exceedingly smooth test track, and you feel no ..
An AC voltage of rms value 413 V and frequency 75 Hz is connected across a light bulb with a resistance of 471 ohms. What is the rms current and maximum current
q1. two 75.0 w 120 rm v light bulbs are wired in series then the combination is connected to a 230 v supply. how much
In a 231-turn automobile alternator, the magnetic flux in each turn is fB = (2.36E-4 T*m2) cos(?t), where ? is the angular speed of the alternator. determine the maximum emf in the alternator
A student m = 79 kg runs at a velocity vi = 2.2 m/s before jumping on a skateboard. After jumping on the board the student has a velocity vf = 1.69 m/s. What is mass of skateboard
A 1530 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force
Two waves of the same frequency have amplitudes 0.961 and 2.16. What is the resultant amplitude
the wavenumber of the incident radiatin in a raman spectrometer is 20487 cm-1. what is the wavenumber of the scattered
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