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The source of a sound wave has a power of 8.34μW. If it is a point source, (a) what is the intensity and (b) the sound level at 2.29 m. distance?
A bucket of water of mass 14.8kg is suspended by a rope wrapped around a windlass, that is a solid cylinder with diameter 0.290m with mass 12.5kg. What is the time of fall
The plates of a spherical capacitor have radii 54.8 mm and 57.3 mm. Calculate the capacitance in picofarads. What must be the plate area in square centimeters of a parallel-plate capacitor with the same plate separation and capacitance?
during a 5.45 s interval a particles coordinates change from x 10.4 m y 4.95 m to x 28.8 m y -4.95 m. assuming the
A movie star catches a reporter shooting pictures of her at home. She claims the reporter was trespassing and to prove her point, How far away from the subject was the reporter standing
As a 1.00 mol sample of a monatomic ideal gas expands adiabatically, the work done on it is -2500 J. Calculate the final pressure and temperature
A ball is thrown straight up from the ground with speed v 0 . At the same instant, a second ball is dropped from rest from a height H , Find the time at which the two balls collide
The moon in its orbital about the earth has a centripetal acceleration about 1/4200 of that an object dropped on Earth's surface. If the moon were twice as far away what would its centripetal acceleration be?
A 25 g bullet travelling 250 m/s penetrates a 2 kg block of wood and emerges cleanly at 150 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
A3.50kg object is attached to a spring and placed on a horizontal, smooth surface. A horizontal force of24.0N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of thexaxis).
an object with mass m 6.5 kg is moving with a constant velocity along the y axis v08.4 ms. suddenly a force along the x
An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp.
a 520 w carnot engine operates between constant-temperature reservoirs at 109degc and 67degc.a what is the rate at
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