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A uniform stick of length L = 1.8 m, width W = 10.0 cm, and mass M = 4.8 kg oscillates as a physical pendulum and pivots about point O as shown in the Figure.
a) What is the period of the pendulum if x, the distance from the pivot point to the center of gravity of the pendulum, is equal to 0.45 m?
b) Determine the distance x for which the period of the pendulum has a minimum value.
c) Calculate the minimum value of the period of the pendulum.
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A refinery buys gas that is metered at 52 degrees F and 250 psig. The refinery pays for the gas in a price per SCF. How many SCF were purchased
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A helium-neon laser intended for instructional use operates 7.5 mW. Find out the maximum value of the electric field at a point where the cross sectional area of beam is 10 mm.
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Galaxies form by gravitational collapse of regions that are denser than average. Noting that the present day average mass density of the universe is ρ = 3 × 10-30 g/cm-3, estimate how long it takes for a galaxy to collapse.
Two blocks are placed in contact on a horizontal frictionless surface. The smaller box has less mass than the larger box. A force F is applied to the small box as shown so that the boxes accelerate to the right.
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