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A wheel is mounted on a stationary axle starts at rest and is given the following angular acceleration ? =(9-12t) (SI units)where t is the time after the wheel begins to rotate. Find the number of revolutions that the wheel turns before it stops(and begins to turn in the opposite direction).
A sinusoidal wave traveling on a string is moving in the positive x-direction. The wave has a wavelength of 3 m, a frequency of 70 Hz, What is the wave function for this wave
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
Speedboat A negotiates a curve whose radius is 124m. Speedboat B negotiates a curve whose radius is 230m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
A 3000 pound car crashes into a concrete jersey barrier moving 3 sections (totaling 12,000 pounds) laterally 24 inches. How fast was the car going on impact.
A 0.410kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 22.0N/m . The block rests on a frictionless surface. A 6.00×10^2kg wad of putty is thrown horizontally at block, hitting it with a s..
A steel wire 2.00m long with circular cross section must stretch no more than 0.260cm, What minimum diameter must this wire have
discuss general considerations of various electromagnetic radiations at many wavelengths to study diverse astronomical
A steel beam is placed vertically in the basement of a building to keep the floor above from sagging. Find the vertical compression of the beam
Illustrate what was the angular acceleration of the grinding wheel as it slowed down? Through what total angle did the wheel turn between t = 0 and the time it stopped?
After a shipwreck, a solid steel spoon lies at the bottom of the ocean, 5.45km below the surface, What's the water pressure at that depth
Four particles are held in place at the corners of a square with sides of length L. Each particle has a charge q and mass m. (a) What is the potential energy of the system of charges.
A plastic circular loop has a radius R, and a positive charge q is distributed uniformly around the circumference of the loop. what is the magnitude of the magnetic torque on the loop
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