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A ball starts falling with zero initial velocity. Having fallen a distance h, it comes in contact with a smooth inclined surface, which forms an angle α with the horizontal. The ball rebounds elastically off that surface. Find at what distance from the impact point will the ball touch this inclined surface again?
You have a pulley 11.8 cm in diameter and with a mass of 1.6 kg. You get to wondering whether the pulley is uniform. What is the moment of inertia if the pulley is uniform
The pressure fluctuation of sound waves at the closed end of a pipe vibrating at resonance is: 1. Minimum 2. 1/2 minimum 3. unchanged 4. maximum 5. 1/2 maximum
a 1.11-microh inductor is connected in series with a variable capacitor in the tuning section of a short wave radio
two stationary positive point charges charge 1 of magnitude 3.80nc and charge 2 of magnitude 1.60nc are separated by a
A 0.450-kg block of wood hangs from the ceiling by a string, and a 7.30×10?2-kg wad of putty is thrown straight upward, How high does the putty-block system rise above the original position of the block
a rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. the wire has
A Carnot engine uses hot and cold reservoirs that have temperatures of 1850 and 845 K, respectively. The input heat for this engine is QH. The work delivered by the engine is used to operate a Carnot heat pump. The pump removes heat from the 845-K re..
While working in a research lab, you find that it takes396 J of heat to increase the temperatureof 0.99 kg of a material by 32 K. What is the specific heat of the material
A rollercoaster car starts at rest on top of a frictionless hill ofheight 17 m, find the magnitude of the car's tangential acceleration
If you had been tasked to remove the water from New Orleans after Hurricane Katrina would you select a radial flow, mixed flow or axial flow pump for this purpose? Explain it briefly.
What must be the area of a suction cup that is completely evacuated and a ceiling if the cup is to support a child who weighs 30 kg
The energy for the 5s valence electron in rubidium (Z=37) has energy ?4.18 electron volts. What is the effective nuclear charge Zeff experienced
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