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Q. An electron is accelerated by a 4.5kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.0 cm?
Q. After viewing 20/20's segment on alcohol, how did each of the three men differ when considering body size, past alcohol drinking patterns, food intake on the day of the competition and during the drinking bout, performance on the roadside sobriety test, and eventual blood alcohol content? What was each man's perception or judgment of how drunk he was at the end of the drinking competition?
A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
Drag race tires in contact with an asphalt surface have an extremely high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimation the coefficient of static friction needed for a drag racer to cover 1.0 km..
What is instantaneous acceleration
What is the maximum speed the masses
A 29.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 85.0 N and is directed at the angle of 30.0° above the horizontal. Find out the coefficient of kinetic friction.
Gold, which has a density of 19.3 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber.
A ranger in a national park is driving at 59 km/h while a deer jumps onto the road 61 m ahead of the vehicle. After a reaction time of t s, ranger applies the brakes to produce an acceleration of -3 m/s2. What is the maximum reaction time allowed if ..
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
From a cliff that is 9.4 m above a lake, a young woman (mass 44 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength.
A boulder has 300J of potential energy sitting on the edge of cliff. What is the boulder's kinetic energy as it hits the ground.
A block of mass 4.0 kg is put on top of a block of mass M = 5.5 kg. To cause the top block to slip on the bottom one, while the bottom one is held fixed, a horizontal force of at least 16 N must be applied to the top block. The assembly of blocks is ..
What is error in the simple pendulum approximation
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