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89. Calculate the mass, in grams, of each sample a. 1.1 x 102 gold atoms b. 2.82 x 10” helium atoms c. 1.8 x 1023 lead atoms d. 7.9 x 1021 uranium atoms
Consider the system shown in the figure. Block A has weight 4.91 N and block B has weight 2.94 N. Once block B is set into downward motion, it descends at a constant speed. Assume that the mass and friction of the pulley are negligible.
93. Calculate the average mass, in grams, of one platinum atom.
