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An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s). If a particular disk is spun at 675.4 rad / s while it is being read, and then is allowed to come to rest over 0.301 seconds, what is the magnitude of the average angular acceleration of the disk?
If the disk is 0.12 m in diameter, what is the magnitude of the linear acceleration of a point 1/7 of the way out from the center of the disk?
Various voltages V are applied across a resistor and for each value of V the current I through the resistor is measured, What is the resistance R of the resistor
Fred and Barney are two electric charges that are initially held 1 meter apart and experience an electric repulsion of 10 pounds of force. What would be the force of repulsion between them be if the two were moved closer together so that they were..
Two bugs are buzzing with the same frequency of 186Hz. One of the bugs is flying away from a stationary observer at 9.0m/s, What is the beat frequency that the observer hears
calculate the force of gravity between the earth and the moon. moons mass=7.4x10^22 kg ; average earth moon distance =3.8x10^8 m. Express your answer to two significant figures and include appropriate units. F=G((m1m2)/d^2)
What is the angle. The velocity of a particle moving in the xy plane is given by = (5.5t - 4.5t2)i + 8.3j
Illustrate what current through the wire, and in which direction(LtoR OR R to L)will allow the wire to float in the magnetic field.
A loudspeaker of mass 21.0 {rm kg} is suspended the distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.90 {rm m}.
A 3.0 m long rigid beam with a mass of 125 kg is supported at each end. An 65 kg student stands 2.0 m from support 1. How much upward force does each support exert on the beam
The blackbody radiation emitted from a furnace peaks at a wavelength of 3.4 10-6 m(0.0000034 m). What is the temperature inside the furnace
A ball is dropped from rest from the top of a building of height h. What is the height of the two balls when they are passing
Nitrogen at 5 X 10^5 Pa and 80 degrees C is on one side of a partition, occupying 1/3 of the volume of a 1.2 m^3 container. find the final pressure and temprature
The driver of a car wishes to pass a truck that is travelling at a constant speed of 20 meters per second. Initially, the car is also travelling at 20 meters per second and its front bumper is 24 meters behind truck's rear bumper.
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