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A proton beam in an accelerator carries a current of 115 µA. If the beam is incident on a target, how many protons strike the target in a period of 22.0 s?
A 4-kg mass is connected by a light cord passing over a pulley to a 2-kg mass. The pulley rotates about a frictionless axle and has a mass of 3kg and radius .2-m. find the acceleartion of the two masses
The mass of the H2 molecule is 3.3x10-24 g. If 1023 hydrogen molecules per second strike 2.0 cm2 of wall at an angle of 45° with the normal when moving a speed of 105 cm/s
A person 1.8 m tall stands 0.74 m from a reflecting globe in a garden. How large is the person's image
A projectile is launched from the ground and sails across an open field. At launch, its total mechanical energy is 100 J. At its highest point, is its potential energy greater than, less than, or equal to 100 J? Explain, assuming that air resistance ..
An RLC circuit has a sinusoidal voltage supplied to it at 158 kHz with a peak voltage of 172 V; a 45 k? resistance; What is the peak current for this circuit
An elephant's legs have a reasonably uniform cross section from top to bottom, and they are quite long, pivoting high on the animal's body. how many steps per minute will the elephant take
During heavy rain, a rectangular section of a mountainside measuring 2.7 km horizontally, 0.85 km up along the slope, What is the mass of the mud sitting above an area of 4.0 m2 in that section
if mars orbital period is (time for one orbit around the sun) is 1.886 earth years, what is the average speed of mars around the sun
Physics - Potential Energy - Gravitational Force A satellite has a mass of 100 kg and is located at 2.00 x 10^ 6 m above the surface of earth. (A) What is the potential energy associated with the satellite at this location?
A car travels along a certain road at an average speed of 46.51 km/h, Calculate the average speed for the round trip
A modern sculpture has a large horizontal spring, with a spring constant of 276 N/m, that is attached to a 49.0-kg piece of uniform metal at its end, By how much has the spring stretched in meters
Two point charges, +3.18 µC and -6.65 µC, are separated by 1.13 m. What is the electric potential midway between them
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