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The average distance between the proton and the electron in a hydrogen atom is 5.29 x 10-11 m. With the particles separated by this distance, the 'Bohr radius,' what is the electric potential energy of the configuration?
A76 kg window cleaner uses a18 kg ladder that is 6.0 m long. He places one end on the ground2.9 m from a wall, rests the upper endagainst a cracked window, What is the angle of this force on the ladder
Two children stand on opposite sides of a merry-go-round of diameter 6.0 m, Calculate the magnitude of the Coriolis force acting on the moving ball due to the rotation of the merry-go-round
An artificial satellite circles the Earth in a circular orbit at a location where the acceleration due to gravity is 6.83 m/s2. Determine the orbital period of the satellite
the wire in the drawing carries a current of 9.3 a. suppose that a second long straight wire is placed right next to
The equations for free fall at the surface of Mars and Jupiter (s in meters, t in seconds) are Mars, s = 1.86t^2; Jupiter, s = 11.44t^2. How long would it take an object falling from rest to reach a velocity of 100 km/hr on each planet?
A sphere with radius 2 cm is placed at a location near a point charge. The sphere has a charge of -9*10^(-10) C spread uniformly over its surface.The electric field due to the point charge has a magnitude of 470 N/C at the center of the sphere. Wh..
A fisherman's scale stretches 4.2 cm when a 2.6 kg fish hangs from it. What will be the amplitude and frequency of vibration if the fish is pulled down 3.0 cm more and released so that it vibrates up and down
What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to four times the Earth's radius before coming to rest momentarily
0.100kg stone rests on a frictionless, horizontal surface. A bullet of mass 9.00g , find the magnitude of Daniel's velocity after the collision
By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows, with m1 = 11.7 kg and m2 = 43.9 kg. find the mass of the pulley
After some heat transfer from the water to the air and the surroundings, both the air and water are measured to be at 44°C. Determine
The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 302000 rpm. Calculate the angular acceleration produced by the drill
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