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A light string can support a stationary hanging load of27.0 kg before breaking. A2.80 kg object attached to the stringrotates on a horizontal, frictionless table in a circle of radius0.800 m, while the other end of the string is held fixed. What range of speeds can the object have before the string breaks?
A bat at rest sends out ultrasonic sound waves at 49.4kHz, What is the received sound frequency
a horizontal wire of length 0.85 m carrying a current of 1.2 a is placed in a uniform external magnetic field. when the
A 9.0-g piece of Styrofoam carries a net charge of -.65mC, What is the charge per unit area on the plastic sheet
A thermally isolated flask containing helium gas initially at 11 K, allows the gas to slowly escape through a small tube until the pressure inside is 0.98 atm, what was the initial pressure
Find the minimum diameter of an l = 18.9 m long brass wire that will stretch no more than 9.38 mm when a mass of 312 kg is hung on the lower end
What is the distance, measured along the screen, between this bright fringe and bright fringe corresponding to m = 3.
In the figure to the left, the pulley (which is in the form of a disk) has a mass of 7.50 kg and a radius of 35 cm. What is the speed of the iron block
a plane leaves seattle flies 81.0 at 22.0 north of east and then changes direction to 53.0 south of east. after flying
A 11.0-kg object undergoes an acceleration of 2.6 m/s2. What is the magnitude of the resultant force acting on it
Three resistors, 20 %u03A9, 50 %u03A9, and 82 %u03A9, are connected in series, find the potential difference across this equivalent resistance
A proton (with a rest mass m=1.67×10?27kg) has a total energy that is 4.00 times its rest energy. What is the magnitude of the momentum p of the proton
a rubber ball dropped from a height of 2 bounces back to a height of 1. draw the balls position and velocity graphs
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