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A wheel of radius R is rolling without slipping. The velocity of the point on the rim that is in contact with the surface, relative to the surface is:
a) equal to Rw in the direction of motion of the center of mass.
b) equal to Rw opposite the direction of motion of the center of mass.
c) Zero.
d) equal to the velocity of the center of mass and in the same direction
e) equal to the velocity of the center of mass but in the opposite direction.
An engine based on the Stirling cycle uses 2.2 kg of N; as its working fluid. 570 kJ of heat enters at a temperature of 850 K during each cycle. Heat is exhausted at 330 K. You may neglect the temperature dependence of the specific heat in this probl..
A capacitor is connected to an ac generator that has a frequency of3.7 kHz and produces a voltage of1.9 V. The current in the capacitor is 32 mA. What voltage does the second generator produce
An %u03B1-particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of1.20 106 V, What is the radius of its circular path
A monkey is chained to a stake in the ground. The stake is 2.72 m from a vertical pole, and the chain is 3.82 m long. How high can the monkey climb up the pole
Point charges q1 = -4.10 nC and q2 = -4.10 nC are separated by distance 3.00 mm, forming an electric dipole. What is the direction fo the dipole moment
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the resonant absorption wavelength
A transformer is to be used to provide power for a computer disk drive that needs 5.0 V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 415, and it delivers 500 mA (the secondary current) at an output v..
A conducting rectangular solid of dimensions dx = 5 m, dy = 3m, and dz = 2m moves at a constant velocity V= 20 i m/s through a uniform magnetic field B = 30 mT j.
a. consider a monatomic gas of particles each with mass m. what is vrms sqrtv2 the root mean square rms of the x
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.6 m/s. Two seconds later the bicyclist hops on his bike and accelerates at 2.2 m/s2 until he catches his friend.
A 1.00 V potential difference is maintained across a 9.0 resistor for a period of 16.0 s. What total charge passes through the wire in this time interval
At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifiers so that the amplitude of the sound, By what percentage does the intensity increase
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