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Attached to each end of a thin steel rod of length 1.10 m and mass 6.00 kg is a small ball of mass 1.02 kg. The rod is constrained to rotate in a horizontal plane about a vertical axis through its midpoint. At a certain instant, it is rotating at 39.0 rev/s. Because of friction, it slows to a stop in 32.0 s. Assume a constant frictional torque.
a) Compute the angular acceleration.b) Compute the retarding torque due to friction.c) Compute the total energy transferred from mechanical energy to thermal energy by friction.d) Compute the number of revolutions rotated during the 32.0 s.
Then a second inductance L2 =10 mH is connected in parallel with L1. Find out (a) the current that the generator delivers to L1 and (b) to the parallel combination.
Calculate the energy of each of the two photons produced from electron-positron pair annihilation when the electron and positron were nearly at rest
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a current of 0.97a flows through a copper wire 0.50mm in diameter when it is connected to a potential difference of 15
A proton is to orbit Earth at the equator using Earth's magnetic field to supply part of the necessary centripetal acceleration. In what direction should the proton move?
If the maximum acceleration that is tolerable for passengers in the new train system of Oahu is 2 m/s^2 and the train stations are located 750 meters apart, what is the maximum speed the new train can reach between stations? What is the travel tim..
A 5 ohms resistor is in SERIES with a 25 ohms resistor, and the combination is connected to a 10V battery. What is the equivalent resistance of the series combination
A 270-m-wide river flows due east at a uniform speed of 3.5 m/s. A boat with a speed of 7.6 m/s relative to the water leaves the south bank pointed in a direction 25o west of north. What is the (a) magnitude and (b) direction of the boat's velocit..
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How far down the hill does the shell strike
For lead 82Pb206 (atomic mass = 205.974440 u) obtain the mass defect in atomic mass units
A block with mass 1.871 kg sliding on a frictionless surface is attached to a horizontal spring with spring constant 11.69 N/m at the equilibrium position of the spring. The block is then pulled a distance 13.99 cm from the equilibrium point and rele..
a skier slides horizontally along the snow for a distance of 23 m before coming to rest. the coefficient of kinetic
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