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The drawing shows three identical rods (A, B, and C) moving in different planes. A constant magnetic field of magnitude 4.50 T is directed along the +y axis. The length of each rod is L = 1.3 m, and the speeds are the same, vA = vB = vC = 2.9 m/s. For each rod, find the magnitude of the motional emf, and indicate which end (1 or 2) of the rod is positive.
A solid cylinder of mass 10 kg is pivoted about a frictionless axis thought the center O. How many radians does the cylinder rotate through in the first 5.0 seconds, if it starts from rest
Suppose that we align a compass needle with the horizontal component of the Earth's magnetic field, What is the size of the horizontal component of the Earth's magnetic field
The light from a distant star takes 252 years to reach the earth. How far away is the star from the earth
the speed at which the ball left the quarterback's hand.
A golf ball strikes a hard, smooth floor at an angle of 25.8 ° , What is the magnitude of the impulse applied to the golf ball by the floor
How much energy must be added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175celsious? assume that their initial temperature is 21 celsious, that specific heat capacity of popcorn is 1650 j/kgcelsious, and ..
What is the energy density in the electric field at the surface of a 2.90-cm-diameter sphere charged to a potential of 1000V
Suppose a 31.7 kg child sits 1.38 m to the left of center on the same seesaw as the problem you just solved. A second child sits at the end on the opposite side, Find the normal force acting at the pivot point
Over a time interval of 1.92 years, the velocity of a planet orbiting a distant star reverses direction, changing from +19.7 km/s to -19.1 km/s. determine the total change in the planet's velocity
An elevator 700000 N is accelerating downward at the rate 4.55 ft/s^2. The maximum tension that the cable can handle is 125000 N. What is the shortest distance the elevator could travel?
An iguana that is slowing down at a uniform rate of acceleration while moving in positive direction.
For a Nd:YAG laser there are four pump levels located at 1.00 eV, 1.24 eV, 2.40 eV, and 2.54 eV. What is shortest possible pump wavelength (in nanometers) that could be used to populate any of the excited energy levels
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