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Problem: A 101 kilograms horizontal platform is a uniform disk of radius 1.99 meter and can rotate about the vertical axis through its center. A 67.3 kilogram person stands on the platform at a distance of 1.11 meter from the center and a 28.3 kilogram dog sits on the platform near the person, 1.31 meter from the center.
Part A. Obtain the moment of inertia of this system, consisting of the platform and its population, with respect to the axis.
A wire carries a current of 0.97 A . This wire makes an angleof 64 degree with respect to the magnetic field of magnitude3.8*10-5T. What is the lenght of the wire
A cart of mass 1.91kg traveling 1.29m/s inelastically strikes a stationary mass of 0.41kg. What is the total momentum of the system
A car moving at 10 m/s crashes into a barrier and stops in 0.50s. There is a 20kg child in the car. Suppose that the child's velocity is changed by the same amount as the cars in the same time period.
An arrow is shot off the top of a bridge of unknown height. The speed of the arrow at launch is known to be 30.0 m/s. How tall is the bridge
A water dispenser for pets has an inverted plastic bottle. When acertain amount of water is drunk from the bowl, more water flowsautomatically from the bottle into the bowl. The bowl neveroverflows. Explain the operation of the dispenser. Does the he..
A single conservative force F = (4.0x - 10)iN, where x is in meters, acts on a particle moving along an x axis. Estimate the maximum positive potential energy
A ball is thrown at a 60.0° angle above the horizontal across level ground. It is released from a height of 2.00 m above the ground with a speed of 16.0 m/s.
Two charged dust particles exert a force of 8.5 x10-2 N on each other. What will be the force if they are moved so they are only one-seventh as far apart.
A block (mass = 2.0 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 1.1 10-3 kg · m2), Find the angular acceleration of the pulley
Three moles of an ideal monatomic gas expands at a constant pressure of 2.90atm ; the volume of the gas changes from 3.00×10?2m3 to 4.40×10?2m3. Calculate the amount of work the gas does in expanding
Five cubic feet of a gas at 90 pisg and 75 degree F are compressed to a volume of 2 cubic feet and the heated to a temperature of 250 degree F illustarte what is the new pressure? (General Ideal Gas Law)
a hollow cylindrical conductor has an inner radius a 1.1 cm and an outer radius b 3.7 cm. the total current through
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