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Energy around a sphere *
A sphere of radius R has a charge Q distributed uniformly over its surface. How large a sphere contains 90 percent of the energy stored in the electrostatic field of this charge distribution?
Two identical waves (of equal frequency and amplitude) arrive in phase at a certain point A. The resultant wave at point A is A wave of the same amplitude and frequency as the two incoming waves. A wave of the same frequency and twice the amplitude o..
One cylinder in the diesel engine of a truck has an initialvolume of 600 cm3. Air is admitted to the cylinder at 30°C and a pressure of 1.0 atm. The piston rodthen does 400 J of work to rapidly compress the air. What are its final temperature and ..
A crying baby emits sound with an intensity of 8 × 10-8 W/m2. What is the intensity level for a set of twins? The lowest detectable intensity is 10-12 W/m2
A cylinder (radius = 0.11 m, center-of-mass rotational inertia = 0.015555 kg·m2, and mass = 1.34 kg) starts from rest and rolls without slipping down a plane by an angle of inclination of28.5°. Discover the time it takes it to travel 1.57m along the ..
light of wavelength 5.00 x 102 nm passes through a slit of width 0.210 mm.a find the width of the central maximum on a
A 5.000kg mass starts from rest and slides down on an inclined plane, hits a bumper at the bottom of the inclined plane and bounces back up the inclined plane and comes to rest again. Through the collision with the bumper, 0.700J of energy is lost.
A guitar string is 90cm long and has a mass of 3.6g from the bridge to support post (L) is 60cm and the string is under the tension of 560. What are the frequencies of fundamental and first two overtones.
determine the angle below the horizontal that you must aim your spear gun in order to catch dinner. Suppose the spear gun barrel is 1.70 m above the water surface, the fish is 1.40m below surface, and the spear travels in a straight line all the w..
One object is at rest, and another is moving. The two collide ina one-dimensional, completely inelastic collision. In other words,they stick together after the collision and move off with a commonvelocity. Momentum is conserved.
An LRC series circuit with R = 100 Omega, L = 56mH, and C =1.7 muF is powered by an ac voltage source of peak voltage V0 = 210 V, Determine the phase angle of the source voltage relative to the current
A proton moves perpendicular to a uniform magnetic field. Its trajectory is a circle of radius 0.31 m with a period of 2.1 10-7 s. find the magnitude of centripetal force exerted on the proton
a spherical non-conducting shell of inner radius r1 10 cm and outer radius r2 15 cm carries a total charge q 15 oc
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