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In Rutherford's scattering experiments, alpha particles (charge = +2e) were fired at a gold foil. Consider an alpha particle with an initial kinetic energy K heading directly for the nucleus of a gold atom (charge 79 e). The alpha particle will come to rest when all is initial kinetic energy has been converted to electrical potential energy. Find the distance of closest approach between the alpha particle and the gold nucleus for the case K= 3 MeV.
Consider a reference frame associated with a free falling cabin, which is moving with an acceleration of g = 9.8m/s^2. At time t=0 the cabin is at rest. Is this reference frame inertial
two solenoids of radii 2.0 cm and 5.0 cm are coaxial. they are each 25 cm long and have 500 and 2000 turns
a hockey puck has a mass of 0.116 kg and is at rest. a hockey player makes a shot exerting a constant force of 27.5 n
A cube of ice is taken from the freezer at -7.9°C and placed in a97g aluminum calorimeter filled with322g of water at room temperature of 20°C. What was the mass of the ice cube
A race car starts from rest and drives as fast as possible over the"L" shaped course on the board. X=120m, R=35m. the car canaccelerate at a 9.0 m/s^2 under any condition (speeding up, slowingdown or turning). how long will it take to run the cour..
An electron and a 140-g baseball are each traveling110m/s measured to a precision of 0.055%. Calculate the uncertainty in position of the electron
question a square coil enclosing an area with sides 2.7 cm long is wrapped with 2461 turns of wire. a uniform magnetic
A 40.0-N crate starting at rest slides down a rough 6.00-m-long ramp, inclined at 30.0° with the horizontal. What is the speed of the crate at the bottom of the incline
Force F = (1.0 N) + (-1.0 N) acts on a pebble with position vector r = (2.70 m) + (-2.1 m) , relative to the origin. What is the resulting torque acting on the pebble about the origin
a thin gold ring of radius 1.02 cm carries a uniform charge per unit length of 1.02e-14 cm. find the electric field on
q1. a guitar string is 75 cm long and has a mass of 3.8 g. from the bridge to the support post l is 60 cm and the
A 72.0 kg base runner begins his slideinto second base when he is moving at a speed of 4 m/s. The coefficient of friction between hisclothes and Earth is 0.70. He slides so that his speed is zero justas he reaches the base.
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