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A flat, uniform, circular disk (R = 2.25 m, m = 84.0 kg) is initially at rest, but it is free to rotate in the horizontal plane about a vertical, frictionless axis through its center. A 45.0-kg person, standing 1.5 m from the axis, begins to run on the disk in a clockwise circular path, with a tangential speed of 2.00 m/s (measured with respect to the stationary ground-not the disk). Find the resulting angular velocity of the disk.
Andy (mass 77kg ) uses a 2.7m -long rope to pull Bob (mass 61kg ) across the floor (μk=0.20) at a constant speed of 1.0m/s. What is the mass of the rope
What is the advantage of the new crumple zone design in new car's today when they are in a car crash, explain answer from a physics standpoint?
Two equal volumes designated 1 and 2, each of which contains a quantity of a classical monatomic gas at the same temperature, establish a relationship between the chemical potentials µ1 and µ2
A hydrogen atom is in the n = 22 state. Use the Bohr model of the hydrogen atom, find the potential energy of the atom
A spring is hung from the ceiling. A 0.600-kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
A beam of electrons is accelerated from rest through a potential difference of 0.110kV and then passes through a thin slit, How wide is the slit
A cylindrical storage tank has a radius of 1.04 m. When filled to a height of 3.64 m, What is the density of the solvent
Equal masses of 0 oC ice and 100 oC steam are mixed together to form water. What is the final temperature of the water
A device used in radiation therapy for cancer contains 6.30×10-1 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
A toy train is pushed forward and released at x_0 = 2m with a speed of 2m/s. It rolls at a steady speed for 2s, and then one wheel begins to stick. The train comes to a stop 6m from the point at which it was released. What is the magnitude of trai..
The propulsion system on a 1500kg rocket car fires for 15 seconds and the propulsion force is equal to F= x(80-x). What is the average speed for the entire two stage event
Two wires are parallel and one is directly above the other. Each has a length of 50.0 m and a mass per unit length of 0.020 kg/m. However, the tension in the wire A is 6.20 102 N, and the tension in the wire B is 2.90 102 N.
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