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The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.209 m and mass 4.70 kg, and two thin crossed rods of mass 9.95 kg each. You would like to replace the wheels with uniform disks that are 5.25 cm thick, made out of a material with a density of 8750 kilograms per cubic meter. If the new wheel is to have the same moment of inertia about its center as the old wheel about its center, what should the radius of the disk be?
A pendulum consists of a ball of mass m=0.5kg attached to a string of length L=0.75m. find the tension in the string at the bottom of the swing
A 1.0 µF capacitor is connected in parallel with a 2.4 µF capacitor, What is the equivalent capacitance of this combination
A planet of mass m = 7.85 × 1024 kg is orbiting in a circular path a star of mass M = 4.35 × 1029 kg. The radius of the orbit is R = 8.15 × 107 km. What is the orbital period (in earth days) of the planet Tplanet?
A Carnot engine operating with an ideal gas takes heat energy from the hot reservoir at 500 degrees C and exhausts heat energy to the cold reservoir at 250 degrees C. If the engine does 400J of work per cycle, what is its efficiency.
A 70.0Hz generator with an rms voltage of 165Vis connected in series to a 3.35k ohm resistor and a 2.5uF capacitor, Find the phase angle between the current and the voltage
Two 100kg lead spheres are suspended from 160m -long massless cables. The tops of the cables have been carefully anchored exactly 1.0m apart
A ball is thrown directly downward with an initial speed of 7.55 m/s, from a height of 30.2 m. After what time interval does it strike the ground
You place a penny on a turntable at a distance of 8.0 cm from the center. How long after you turn on the turntable will the penny begin to slide off of the turntable
A 106 m long train begins uniform acceleration from rest. The front of the train has a speed of 23 m/s when it passes a railway worker who is standing 230 m from where the front of train started. What will be the speed of last car as it passes the..
A particle of mass M moves in one dimension along the positive x axis, under the influence of two forces. The first force is a constant force, with magnitude B and direction toward the origin. The second force is an inverse square law, with magnitude..
A uniform cylindrical satellite has four tangential rockets. mass = 3600, radius = 4.0m, what is the required steady force of each rocket if the satellite is to reach 32 rpm in 5.0 min?
Physics: Mechanics about two curling stones - calculate speed, resistive force Two curling stones A and B, each having a mass of 2 kg, are on an ice rink floor. A is stationary and 10 meters from a boundary wall, while B is sliding at right angles..
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