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in the bohr model of hydrogen atom an electron circles a proton in an orbit o radius 5.3x10^-11 m. the attracion of the proton or the electron furnishes the centripetal force needed to hold the electron in orbit. find:
a.) force of elecrical atraction between the particles .
b.) the electrons speed.
A 10 kg box is pulled for 3.60 m along a level surface by a ropethat makes an angle of 37 degrees above the horizontal. The tensionforce in the rope is equal to 85 N. There is a coefficient offriction between the box and the floor of 0.64.
Two stationary point charges of 5.00nC and 2.00nC are separated by a distance of 50.0cm. What is the electric potential energy of the electron
two hand-held radio transceivers with dipole antennas are separated by a large fixed distance. assuming a vertical
What is the velocity of observer B relative to observer A . A diver shines a light up to surface of a flat glass-bottomed boat at an angle of 36 relative to the normal.
An object is thrown vertically upward with aspeed of 5 m/s. It lands on the floor with a speed of 6 m/s.From what height was the object thrown?
A block of mass 1.3 kg is attached to a horizontal spring that has a force constant 1200 N/m, What is the maximum speed
two metal balls are hung from strings. the first ball 0.09 kg is pulled to the side and released so that it strikes the
A 35 mm camera using a standard 50.0 mm lens is focused on a 1.80 m tall person who is standing 3.25 m from the lens. What is the height of the flower%u2019s image on the film
Explain the spacing between allowed vibrational energy levels
An airplane propeller is rotating at 1250rpm, Compute the propeller's angular velocity in rad/s
A pebble rolls off the roof of a building and falls vertically.Just before it reaches the ground, the pebble's speed is 17 m/s. Determine the height of the building
question a 100g iron ball specific heat0.473 jgc is heated to 125c and is placed in a calorimeter holding 200g of water
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