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According to a simplified model, the hydrogen atom consists of a proton circled by an electron orbiting at a radius of 5.2x10^-11m. hot fast must an electron be moving if the required centripetal force is provided by the electric force exerted by the proton?
A block of mass 2 kg travels along a horizontal frictionless surface with velocity 3 m/s. What impulse was delivered to mass m
In the old west, a marshal riding on a train traveling 50 m/s seesa duel between two men standing on the Earth 50 m apart parallel tothe train. Who was struck first
John measured the thickness of a book using a measuring stick. Calculate the mean thickness of the book
A circular loop of wire with areal A lies in the xy-plane. As viewed along the z-axis looking in the -z direction toward the origin, Determine the vector magnet moment of the current loop
A 2.0 wood block is launched up a wooden ramp that is inclined at a 31 angle. The block's initial speed is 5.0 . The coefficient of kinetic friction of wood on wood is muk= 0 .2 part A What vertical height does the block reach above its starting poin..
About 27% of the body of a person floating in the Dead Sea will be above the water line. find the density of the water in the Dead Sea
A block of mass 7.37 kg in outer space is moving at 1.82 m/s by no external forces acting on it. After an explosion, the block is split into two parts both having mass equal to half the mass of the original block.
A mass is hung from a 25 centimeter string. The string is pulled aside a distance of 1.5 centimeter and released. Find what is the period of oscillation
Find the linear momentum and kinetic energy of a bullet of mass 4.60 10-2 kg moving at a speed of 320 m/s
The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming the sun emits radiation uniformly in all directions, evaluate the total power radiated by the sun.
A laser beam is incident on two slits with a separation of 0.230 mm, and a screen is placed 5.10 m from the slits. what is the wavelength of the laser light
Obtain what the initial speed of the ball if it just passes over the goal, 2.4 meter above the ground, given the initial direction to be 40 degree above the horizontal
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