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At point A , 5.0m from a small source of sound that is emitting uniformly in all directions, the intensity level is 56.0 dB
What is the intensity of the sound at A?
How far from the source must you go so that the intensity is one-fourth of what it was at A ?
How far must you go so that the sound level is one-fourth of what it was at A ?
The mean (average) of their squares
Suppose your body was able to use the chemical energy in gasoline, How far could you pedal a bicycle? How far could you pedal a bicycle at 15km/hr on the energy in 1.8 gal of gas? (1 gal of gas has a mass of 3.2 kg)
A diver is planning to salvage a Spanish galleon located in 200 feet of water. He plans to use a diving suit that will be supplied with air from a hose. Calculate which compressor should be bought by the diver for the given condition
A 1.20 brick is sliding next to on a rough horizontal surface at 15.0 .If the brick stops in 4.30, how much mechanical energy is lost?
What is the friction force that acts on the bear?
How much longer does the trip take. Find out the acceleration of each mass and the tension in the string that connects them.
A light ray in air is incident on a transparent material whose index of refraction is n, Evaluate your expression for light incident on glass
A bucket of mass 1.50 is whirled in a vertical circle of radius 1.20. At the lowest point of its motion the tension in the rope supporting the bucket is 25.00 N. Find out the speed of the bucket. How fast must the bucket move at the top of the circle..
A 151 kg rocket moving radially outward from Earth has a speed of 5.03 km/s when its engine shuts off 226 km above Earth's surface. (a) Assume negligible air drag; find the rocket's kinetic energy when the rocket is 535 km above Earth's surface. (b) ..
How to find out speed of the block
Both surfaces of a double convex lens have radii of 30.8 cm. what is the index of refraction of the lens material
What is the CD's moment of inertia for rotation about a perpendicular axis by the edge of the disk.
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