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The sound from a church organ "revertebrates" for many seconds after the organ stops producing sound due to reflections inside the church. That is the sound from the organ bounces back and forth off the church walls many times before the sound inentsity decays away completely. If the reverberation time is 10s and the church has the approximate shape of a square box of length 25 m, approximately how many times does the sound reflect back and forth (that is make one round trip through the room, reflecting from both walls) during the revertebration time?
A 2.0 cm x 2.0 cm parallel-plate capacitor has a 3.0 mm spacing.The electric field strength inside the capacitor is 1.1 x105 V/m. How much charge is on each plate
George, Romeo's not often heard about older brother, was also quite in love with Juliet. One night he tried to climb a 10 m long, find the coefficent of friction between the ladder and the grass
A neutron star has a mass of 2.20 × 10^30 kg (about the mass of our sun) and a radius of 5.20 × 10^3 m. Assume an object falls from rest near the surface of such a star. How fast would it be moving after it had fallen a distance of 0.0083 m.
An 9.2 mH inductor is connected to an ac generator (10.0 V rms, 650 Hz). Determine the peak value of the current supplied by the generator
A submarine dives to a depth of 310 feet in the ocean. What is the gauge pressure at this depth? How many atmospheres is this
A suitcase is pulled by a tether that makes a 60 degree angle with the horizontal. what is the magnitude of the pull
find the velocity of the plane relative to the ground.
Illustrate what is the maximum load that can be hung from a copper wire of diameter of 0.47 mm before it breaks?
Two lightbulbs operate on the same potential difference. Bulb A has four times the power output of bulb B. What is the ratio of the current in bulb A to the current in bulb B?
A hook is boxing primarily involves horizontal flexion of the shoulder, while maintaining a constant angle at the below. What is the average speed of the fist during the hook
An athlete competing in the hammer throw swings a 4.0 kg hammer on a chain in a horizontal circle with a 5.4 m diameter. What is the tension in the chain attached to the hammer at that speed
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
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