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A bullet of mass m is fired into a hanging wood block of mass M and pendulum length L. The block, with the bullet embedded, swings up to the point the angle with the vertical ?. Calculate the speed with which the bullet made contact with the block,
The terminal voltage of a certain battery is measured with the battery disconnected and is found to be 6.30 V. Find the voltage across the battery terminals
In a charming 19th-century hotel, an old-style elevator is connected to a counterweight by a cable that passes over a rotating disk 3.50 m in diameter. The elevator is raised and lowered by turning the disk, and the cable does not slip on the rim ..
A (perfect) transformer has 20 V and 2 A in its primary coil, 200 turns in its primary circuit, and 20 in its second. How much power is in the secondary circuit
A 55 g piece of aluminum at 21 °C is cooled to -196 °C by placing it in a large container of liquid nitrogen at that temperature. How much nitrogen is vaporized
A 0.15 kg baseball is hit by a baseball bat. Right before it is hit, the ball's speed is 30 m/s, find the magnitude of the net impulse that is applied to the ball
A 116-rad dose of radiation is administered to a cancer patient (mass = 76) kg). how much energy is absorbed
A perfect negative index lens is used with a single molecule. How long time will it take to form a perfect image of themolecule with the ideal lens, and why?
The tropical year, the time from vernal equinox to the next vernal equinox, Find the number of seconds in one half of a tropical year
A 820 kg- sports car collides into the rear end of a 2700 kg- SUV stopped at a red light. calculates the speed of the sports car at impact
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.360mm wide. What is the width of the first bright fringe on either side of the central one
q1. an aging coyote cannot run fast enough to catch a roadrunner. he purchases on ebay a set of jet-powered roller
A 2.10 mass is pushed against a horizontal spring of force constant 26.0 on a frictionless air table. What is the greatest acceleration of the mass
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