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A solid disk with a moment of inertia of 3.53 kg m2 is spinning about its axle such that the disk rotates by 2p radians (1 rev) every 0.300 s. The axle is tilted through an angle of p radians (180°) in a time of 0.28 s.
1. What is the magnitude of the angular momentum of the wheel? (in kg m2/s)2. What is the magnitude of the torque that must be applied to the wheel in order to rotate it through an angle of p radians? (in N m)
Due to a tune-up, the efficiency of an automobile engine increases by 7.00 %. For an input heat of 1290 J, how much more work does the engine produce after the tune-up than before
A certain helium-neon laser pointer, emitting light with a wavelength of 632 nm, How many photons are emitted by the laser pointer
q1. every day our earth receives 1.55times1022 j energy from the sun. if we were able to use 0.85 percent of this
A motorist drives south at 28.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.20 min, find the total vector displacement
An indoor running track is square-shaped with rounded corners; each corner has a radius of 5.30 m on its inside edge. What is the design speed on the innermost lane of the track if the banking angle is 11.0 degrees
A point charge q1=+2.40 micro C is held stationary at the origin. How much work is done by the electric force on q2
To store the energy produced in 1hour by a 110 electric power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir? Suppose the upper reservoir is 510 meters above the lower one, and we can neglect the sm..
A flutist assembles her flute in a room where the speed of sound is 342m/s . When she plays the note A, it is in perfect tune with a 440Hz tuning fork. How many beats per second will she hear if she now plays the note A as the tuning fork is sounde..
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 60° C. What is the temperature coefficient of resistivity
A long, straight wire runs along the y-axis. The wire carries a current in the positive y-direction that is changing as a function of time according to i = 8 A + (0.2 A/s)t. A loop of wire is placed in the xy-plane near the y-axis. The loop has di..
In 1980, over San Francisco Bay, a large yo-yo was released from a crane. Suppose the yo-yo was 135 kg, What was the tension in the cord on which it rolled
A parallel-plate capacitor is made from two aluminum-foil sheets, each 5.6 wide and 6.0long. evaluate the capacitance of this capacitor
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