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A string is wrapped around a pulley of radius 0.20 m and moment of inertia 0.40 kg*m^2. The string is pulled with a force of 28N. What is the magnitude of the resulting angular acceleration of the pulley?
Determine the initial rate of heat transfer from a hot pack to a patient due to thermal conduction (through the toweling) when the hot pack is applied
An object of heat capacity 100 cal/°C is initially at 30°C. Estimate the resulting entropy change of the universe
he diffraction pattern is viewed on a screen 55.5 cm from the slit. The distance on the screen between the third order minimum and the central maximum is 1.91 cm. What is the width of the slit
A 3.00 kg block is released from rest at the elevated end A of a frictionless track that slopes down to a point B and continues horizontally to a point D, Find the work done on the block by the normal force exerted by the track
A wave has an amplitude of 0.25 m, a frequency of 5 Hz and a wavespeed of 4 m/s.a. Write the displacement equation for the wave
A uniform horizontal beam has a mass of 241 kg and is 10.5 meters long. The beam also carries the following three loads: Load A: 4715 N, 1.26 meters from left end, What are the forces supporting the two ends of the beam
Assume a volleyball player claims a hang time of 1.25 seconds. Then that player must be able to jump a vertical distance of what.
What is the minimum cross-sectional area required of a vertical steel cable from which is suspended a 270 kg chandelier, If the cable is 7.5 m long how much does it elongate
Aluminum is a very light metal with density of 2.7 g/cm^3. What is the weight in pounds of a solid sphere of aluminum of radius 50 cm
A skier finds that she must give hersel a push to get started down ski slopes with angles less than 8 degrees. What is the coefficient of static friction between the skis and the snow
An arrangement of two pulleys, as shown in the figure, is used to lift a 50.0-kg mass a distance of 4.70 m above the starting point. What is the change in the potential energy of the weight
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 7.948 g, is pressed into a leaf of 1.547 m thickness.
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