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A rotating wheel requires 5.0 s to complete 50 revolutions. Its angular speed at the end of the 5.0 s interval is 75 rad/s. What is the constant acceleration of the wheel? Note. You cannot assume the wheel starts at rest.
the illumination of an object by a light source is directly proportional to the strength of the source and inversely
A high-voltage transmission line with a resistance of 0.28 omegacap.gif/km carries a current of 1040 A. What fraction of the transmitted power does this loss represent
your car engine just died. your were moving rightward at 25 m/s, but your car slows to a rest in a distance of 120 m. what net average force was exerted on the car
A series RCL circuit includes a resistance of 291 ?, an inductive reactance of 685 ?, and a capacitive reactance of 409 ?. What is the voltage of the generator
A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0038 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 2.5 102 ft/..
Jack and Jill ran up the hill at 3.39 m/s. Thehorizontal component of Jill's velocity vector was 2.05 m/s. What was the angle of the hill
an 1820 kg car passes over a bump in a road that follows the arc of a circle of radius 41.9 m.a what force does the
A box with a mass of 1.0 kg is moving to the right. Its initialspeed is 2 m/s. After traveling 3 m, its speed is 4 m/s. Inadditional to the usual forces (gravity, normal, friction) thereare two other forces acting on the box. One is a 5 N force th..
At t = 0, the current through a 65.0 mH inductor is 52.0 mA and is increasing at the rate of 100 mA/s. How long does it take for the energy to increase by a factor of 10 from the initial value
In the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two
The tungsten filament of a certain 100 W light bulb radiates 4.00 W of light. (The other 96 W is carried away by convection and conduction.) The filament has surface area of 0.170 mm2 and an emissivity of 0.950. Find the filament's temperature.
The two stars in a binary star system have masses 2.3x1030kg and 5.5x1030kg. They are separated by 1.5x1012m. What is the speed of the lightest star
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