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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.
suppose that the electric potential outside a living cell is higher than that inside the cell by 0.069 v. how much work
What is magnitude of the gravitational attraction
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.02 mT. obtain the radius of the circular path
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If the burgers are spaced 15cm apart, what is the rate of burger production (in burgers/min)?
A 0.20 kg aluminium plate with an initial temperature of 20 degrees c slides down a 15.00m long surface that is inclined at 30 degrees to the horizontal.
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Blocks of 1.0, 2.0, and 3.0 kg are lined up on a frictionless table with a 12 N force applied to the leftmost block
A ray of light strikes the a-b interface at a 50.0o angle of incidence. The index of reflection of materials a is na = 1.20. The angles of refraction in materials b and c are respectively, 39.0o and 53.9o. Find the indices of refraction in these tw..
Determine the increase in velocity of the space shuttle at point P so that it travels from a circular orbit to an elliptical orbit that passes through point A. Also, compute the speed of the shuttle at A.
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