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The surface charge density on an infinite sheet is -2.0 x 10^-6 coulomb. An alpha particle is shot away from the plane at 4.0 x 10^6 m/s. How far does the particle travel before reaching its turning point?
A 9kg mass is connected by a a string over a frictionless pulley to a 5kg block sliding on the table.The coefficient of friction is 0.2, find the tension in the string.
What is the minimum energy needed to create a electron-positronpair when the photon collides with an electron? I know what to do when it collides with a nucleus, I can not figureout what to do about an electron.
A flask is filled with 1.51 L (L = liter) of a liquid at 98.8 °C. When the liquid is cooled to 15.6 °C, What is the coefficient of volume expansion of the liquid
Two forces, 1 and 2, act on the 5.00 kg block shown in the drawing. What is the horizontal acceleration (magnitude and direction) of the block
A 2130 satellite used in a cellular telephone network is in a circular orbit at a height of 800above the surface of the earth. What fraction is this force of the satellite's weight at the surface of the earth
How fast (as a percentage of light speed) would a star have to be moving so that the frequency of the light we receive from it is 14.0 % higher than the frequency of the light it is emitting?
A helicopter blade spins at 115 revolutions per minute. Its tip is 7.00 m from the center of rotation. What is its average velocity over one revolution
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. Determine the ratio of the energy used by the blow-dryer in 17 minutes to the energy used by the vacuum cleaner in 46 minutes
A tire 0.650 m in radius rotates at a constant rate of 150 rev/min. What is the acceleration of the stone
We want to support a thin hoop by a horizontal nail and havethe hoop make one complete small-angle oscillation each 2.0 s. What must the hoop's radius be
Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 4.9 Ã- 105 m3, how many homes could this internal energy serve
What is magnetic flux through the desk surface
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