a rod moves with a speed of 1.6m/s on a rails 30cm apart. the rod has a resistance of 2.5ohm and a magnetic field of 0.35T, and the resistance of the U-shaped conductor is 21.0ohm at a given instant. calculate the induced emf, current, and external force needed to keep the rod's velocity at a constant at that instant

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Which sound characteristic is not affected by the relative motion of an object