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The Bohr radius of the hydrogen atom is 0.529 ?, or 0.0529 nm. Assuming that we know the position of an electron in this orbit to an accuracy of 1% of the radius, calculate the uncertainty in the velocity of the electron. Be sure to include units in all calculations. (Note: Use the equation ΔxΔp=h, where h is equal to Planck's constant, approximately 6.626 x 10-34 J s. The mass of an electron is approximately 9.11 x 10-31 kg.)
A sports car with a mass of 1000 kg crashes into the rear an SUV with amass of 2400 kg that is stopped at a RED light. The bumpers lock and two cars skid forward a distance of 3 meters before coming to a stop. if the coefficient of kinetic friction i..
A negatively charged particle (mass=M, charge=-Q) moves in a region of space where the magnetic field has a constant magnitude of B and a vertically downward direction (into the page). What is the magnitude and direction of the magnetic force
Dan hits a hockey puck, giving it an initial velocity of 3.0m/s. If the coefficient of kinetic friction between ice and puck is0.020, How far will the puck slide before stopping
A motor contains a coil with a total resistance of 10 ohms and is supplied by a voltage of 120V. What is the current the instant the motor is turned on
An athlete rotates a 1.00-kg discus along a circular path of radius 1.04 m, Determine the magnitude of the maximum radial acceleration of the discus
a coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy
A 6.30kg block is pushed 9.45m up a smooth 37.0? inclined plane by a horizontal force of 80.0N . If the initial speed of the block is 3.35m/s up the plane. Calculate the initial kinetic energy of the block
Find the final displacement from the starting point. How much greater was the distance she walked than her displacement.
Find the momentum, kinetic energy, and total energy of an electron moving at a speed of c / ε The rest energy of an electron is 0.51099893 MeV/c^2
Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge, Find the magnitude of the electric force on the bee in the electric field just above Earth's surface, 130N/C directed vertically downward
a farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.600 diopters.
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
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