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?
An object of unknown mass is initially at rest and dropped from a height H. It reaches the ground with velocity V1. The same object is then raised to the same height but this time is trhown downward with velocity V2. How is V2 related to V1?
What is the resultant velocity vector when you add your swimming velocity and the current velocity? Give the x and y components in m/s.
What is the force exerted by the atmosphere downward on the end cap? What is the net force exerted on each bolt holding the end cap in place?
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?
A pearson's correlation coefficient of -.05 would represent a scatter plot in which:
Sand is dumped onto a conveyor belt at the rate of 25 kg per second. What force is needed to keep the belt running at a linear speed of 2 m/s?
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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