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A cooling fan is turned off when it is running at 900 rev/min. It turns 1600 revolutions before it comes to a stop.
(a) What was the fan's angular acceleration, assumed constant?
____rad/s2
(b) How long did it take the fan to come to a complete stop?
____ s
A ray is incident on a sheet of transparent material by parallel sides. The angle of incidence is 60° and the thickness of the sheet is t = 1.40 cm. As the ray passes during the sheet, it is displaced x = 0.650 cm from its original direction of motio..
A merry-go-round is spinning and has a period of 7.25 s. A boy jumps off in a direction parallel to the radius and, by so doing, changes the moment of inertia of the merry-go-round from 575 kg·m2to 545 kg·m2. By conservation of angular momentum, appr..
A proton accelerates from rest in a uniform electric field of 640N/C. At some later time, its speed is 1.20 x 106m/s. Find the magnitude of the acceleration of the proton
A straight wire of length L carries a current I in the positive z direction in a region where the magnetic field is is uniform and specified by Bx=3B, By=-2B, and Bz=B, What is the magnitude of the magnetic force on the wire
A pair of slits, separated by0.150mm, is illuminated by light having a wavelength of?=586nm. What is the path difference for the two slits at the locationy
near the surface of the earth there is an electric field of about 150 vm which points downward. two identical balls
On a weekend archeological dig, you discover an old club-ax thatconsists of a symmetrical 9.2 kg stone attached to the end of auniform 2.6 kgstick. You measure the dimensions of the club-ax as shown in the figure:
A series RLC circuit has a resistance of 500ohms and inductance of 20mH and a capacitance of 2uF. What is the rms current in this circuit
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
In order to fabricate a uniform wire of resistance 1.2 ?, out of m=1 g copper which has a density of 8.92×103 kg/m3, What should be the diameter of the wire
A candle is placed 16.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 6.5cm farther away from the mirror. Find the focal length of the convex mirror.
Two equal volumes designated 1 and 2, each of which contains a quantity of a classical monatomic gas at the same temperature, establish a relationship between the chemical potentials µ1 and µ2
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