Determining moment of inertia
A small grinding wheel has a moment of inertia of 4.0×10-5 {rm kg}cdot{rm m^{2}}. What net torque must be applied to the wheel for its angular acceleration to be 150 {rm rad}/{rm s^{2}}?
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A 5/8 inch (inside) diameter garden hose is used to fill a round swimming pool 6.1m in diameter. How long will it take to fill the pool to a depth of 1.2m if water issues from the hose at a speed of 0.33m/s?
A force vector points at an angle of 52° above the +x axis. It has a y component of +290 newtons. Find (a) the magnitude and (b) the x component of the force vector.
The pulse makes four trips down and back along the cord in 0.650 s. What is the tension in the cord? Your answer differs from the correct answer by 10% to 100%.
What is the approximate size (width) of each detector? Explain the tradeoff between using deep (long) and shallow (short) detectors?
A laser beam is directed at the top mirror from the left edge of the bottom mirror. What is the smallest angle of incidence with respect to the top mirror, such that the laser beam.
Shiller argues that herd behavior can go both ways: It explains the housing bubble, but it also explains the bust. As he notes, "Rational individuals become excessively pessimistic as they see others bidding down home prices to abnormally low
Find the maximum height reached by the rocket. Ignore air resistance and assume a constant acceleration due to gravity equal to 9.80. Write your answer numerically in units of meters.
A school yard teeter-totter with a total length of 5.4 and a mass of 36 is pivoted at its center. A 16 child sits on one end of the teeter-totter. Where should the parent push with a force of 330?
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