Prevent the mass from sliding down the wall
A block of mass m is placed against the inner wall of a hollow cylinder of radius R that rotates about a vertical radius w. In order for friction to prevent the mass from sliding down the wall the coefficient of static friction.
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8.80 × 105 gallons of tar (SG = 1.20) is stored in a 29.0-ft tall storage tank. What is the total mass of the liquid in the tank? What is the pressure at the bottom of the tank?
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One mole of the carbon-12 isotope contains 6.022 × 1023 atoms. What volume in m3 would be needed to store one mole of cube-shaped children's blocks 2.00 cm long on each side?
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A fair six-sided die with numbers 1,2,3,4,5,6 is rolled independently 500 times. Approximate the probability that the sum is between 1720 and 1800.
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