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A thin rod (length = 1.49 meter) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. The mass of the rod may be neglected, compared to the mass of the object fixed to the top of the rod. The rod, starting from rest, tips over and rotates downward.
(a) Find what is the angular speed of the rod just before it strikes the floor?
(b) Find the magnitude of the angular acceleration of the rod just before it strikes the floor?
What is the wavelength? At what speed is the string vibrating. If the given frequency is the seventh harmonic frequency, what is the fundamental frequency of the string.
A 0.24-kg ball on a stick is whirled on a vertical circle at a constant speed. calculate the tension in the stick
a ruler of mass m 75g and l3.0meters is placed so that it is exactly balanced across two spinning cylinders a distance
A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. What is the acceleration of the rising balloon
Two small conducting spheres by radii a and b are imbedded in a medium of resistivity ρ and permittivity ε with their enters separated by a distance d>>a,b. What is the resistance R among them
A house has a volume of 450 m3. The air-conditioning system is designed to replace the air in the house every hour, The air in the ducts flows at 5.0 m/s, find the width of the ducts
two crates rest on the floor one next to the other. a man pushes with a horizontal force of 600 n on the larger 50.0 kg
The drawing shows a skateboarder moving at 7.87 m/s along a horizontal section of a track that is slanted upward by 49.2 ° above the horizontal at its end, which is 0.739 m above the ground.
Presume your local government wants to raise your taxes in order to support the construction of wind and solar power plants that can give your town with low-polluting energy and help decrease your town's dependence on fossil fuels for energy. Would y..
two flexible wires (massless) suspend a 10 cm-long conductor in the magnetic field with b = 4.2T. what is the current to let the wire just have zero tension
A very large electric current can flow inside a tornado from the clouds to the ground. If the magnetic field is gauged to be1.63×10-8 T at a distance of 8.17 km from the tornado, then what is the magnitude of this current?
Mars has a small moon, Phobos, that orbits with a period of 7 h 39 min. What is the mass of Mars
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