Coefficient of static friction between the crate and floor
Find the force necessary to start the crate moving, given that the mass of the crate is 32 and the coefficient of static friction between the crate and the floor is 0.57.
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A mixture of ordinary hydrogen atom and tritium, a hydrogen isotope whose nucleus is approximately 3 times more massive than ordinary hydrogen, is excited and spectrum is observed . How far in wavelength will the Hinfinity lines of the two kinds o
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