What is the minimum energy needed to create a
What is the minimum energy needed to create a electron-positronpair when the photon collides with an electron? I know what to do when it collides with a nucleus, I can not figureout what to do about an electron.
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a force f of magnitude 204 n is applied to a block of mass100 kg in the opposite direction to the normal force on an
an iceboat of mass 100 kg is at rest on a frictionless frozenlake when a sudden wind exerts a force fwind ofmagnitude
at equilibrium the concentration of an acid in solution is 250mm the ph of that solution is 425 assuming that there are
calculate the dipole moment of nacl given a bond length of 0236nm and using the charge of an electron for q a find the
what is the minimum energy needed to create a electron-positronpair when the photon collides with an electron i know
a 500g bullet is fired horizontally into a 120kg wooden block resting on a horizontal surface the coefficient of
a woman stands in an elevaor that has a constant upwardacceleration while the elevator travels upward a distance of180m
the decomposition of phosphine ph3g to p4 g and h2 is first order with rate constant of 11 min-1a how long will it take
assume that a gold nucleus has a radius of 623 fm and analpha particle has a radius of 180 fm what energy must an
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