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A grinding wheel is in the form of a uniform solid disk of radius 6.90 cm and mass 1.90 kg. It starts from rest and accelerates uniformly under the action of the constant torque of 0.603 N · m that the motor exerts on the wheel.
(a) How long does the wheel take to reach its final operating speed of 1 120 rev/min?
(b) Through how many revolutions does it turn while accelerating?
Illustrate what is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing? How much work does the tension in the ropes do as the child swings from the initial position to the bottom?
A small power plant produces a voltage of 6kV and 150A. the voltage is stepped up to 240kV by a transformer before it is transmitted to a substation. What is the current in the transmission line from the plant to the substation
A 1.50 kg object is held 1.20m above a relaxed massless, vertical spring with a force constant of 320 N/m. The object is dropped onto the spring.
one block has a mass M = 500 g, the other has mass m = 460 g, and the pulley, which is mounted in horizontal frictionless bearings, has a radius of 5.00 cm. What is the tension in the part of the cord that supports the lighter block
Three parallel wire 5 m long carry each 24 A of current in the same direction. Find the magnitude force on each wire
A satellite with 2 rectangular solar cells wings with A=60m2, when the wings normally face the sun with an intensity I=1200 W/m2, how much force on the satellite due to the sunlight
A proton travels with the speed of 8.34×105 m/s at an angle of 32.3° with the direction of a magnetic field. The field exerts a force of 3.00×10-17 N on the proton. What is the strength of the field.
You are given 35.000 cm of copper wire with diameter 2.0000 mm. It is formed into a circular loop, At what rate is thermal energy generated in the loop
A disk of radius 3.00 cm has a uniformly distributed charge of Q = 5.20 uC, Calculate the electric field on the perpendicular axis of disk
q1. a steel wire with mass 20.8 g and length 1.09 m is strung on a bass so that the distance from the nut to the bridge
A rectanbular tank is placed on wheels and is given a constant horizontal acceleration a. display that, at steady state, the angle made by the free surface with the horizontal is given by tan(delta)=a/g.
Calculate the period of the square wave (in milliseconds) to which the function generator is to be set in order five 1/e-times of the RC circuit to be accommodated into one half of the square wave
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