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A playground merry-go-round of radius 2.00 m has a moment of inertia I = 270 kg· m2 and is rotating about a frictionless vertical axle. As a child of mass25.0 kg stands at a distance of 1.00 m from the axle, the system (merry-go-round and child) rotates at the rate of 11.5 rev/min. The child then proceeds to walk toward the edge of the merry-go-round. What is the angular speed of the system when the child reaches the edge?
A wire carrying a current of 8.00 A is to be formed into a circular loop of one turn. If the required value of the magnetic field at the center of the loop is 10.0 µT, what is the required radius?
A 1.00 kg block is sitting on the top og a 10.0kg cart that is free to move on a horizontal surface. What is the maximum horizontal acceleration the cart can have
Consider an incompressible fluid inside a closed verticalcylinder. The applied pressure at top of the fluid is 2.02 x10 to the fifth N/m squared, Calculate the pressure at the bottom of the cylinder
A photon of red light (wavelength = 720 nm) and a Ping-Pong ball (mass = 2.00 × 10-3 kg) have the same momentum
A coil of wire with 110 turns is wrapped in a circular shape with a radius of 29 cm. The plane of the coil is perpendicular to a magnetic field of magnitude 2.0 T. What is the cross sectional area of the coil
A floodlight with a mass of 23 kg is used to illuminate the parking lot in front of a library. the floodlight is supported at the end of a horizontal beam that is hinged to a vertical pole, as shown. a cable that makes an angel of 19 degrees with ..
the displacement in meters of an object moving in a straight line is given by s 1 2t t24 where is measured in
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, which has a focal length of 27.0 cm. What is the focal length of the second lens
The stationary siren on a firehouse is sounding at 85 Hz. What is the frequency received by a firefighter racing toward the station with a speed of 108km/h?
After the Sun exhausts its nuclear fuel, its ultimate fate may be to collapse to a white dwarf state. Calculate the average density of the white dwarf
A 500kg mass is suspended directly above the ground using ahorizontal pole to push it 3m from the edge of a vertical building, find What is the tension in the rope
To a fish, the 4.20 mm thick aquarium walls appear to be only 3.80 mm thick. What is the index of refraction of the walls
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