A conducting rod is free to slide on two parallel conducting bars. A resistor is connected to the end of the bar. The conducting bar and the rod have negligible resistance. A constant magnetic field is directed perpendicularly into the page. The power dissipated in the resistor is 64 W. The constant speed of the rod is v=8.00 m/s. Find the magnitude of the applied force that is needed to move the rod with this constant velocity. Give your answer in N.

A conducting rod is free to slide on two parallel conducting bars. A resistor is connected to the end of the bar. The conducting bar and the rod have negligible resistance. A constant magnetic field is directed perpendicularly into the page. The power dissipated in the resistor is 64 W. The constant speed of the rod is v=8.00 m/s. Find the magnitude of the applied force that is needed to move the rod with this constant velocity. Give your answer in N.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A conducting rod is free to slide on two parallel conducting bars. A resistor is connected to the end of the bar. The conducting bar and the rod have negligible resistance. A constant magnetic field is directed perpendicularly into the page. The power dissipated in the resistor is 64 W. The constant speed of the rod is v=8.00 m/s. Find the magnitude of the applied force that is needed to move the rod with this constant velocity. Give your answer in N. The answer is integer.
A rod of mass 0.720 kg and radius 6.00 cm rests on two parallel rails (see figure below) that are d = 12.0 cm apart and L = 45.0 cm long. The rod carries a current of I = 36.0 A in the direction shown and rolls along the rails without slipping. A uniform magnetic field of magnitude 0.400 T is directed perpendicular to the rod and the rails. If it starts from rest, what is the speed of the rod as it leaves the rails? (Assume that the rod is of uniform density.) L 2.07 X You appear to have omitted the translational kinetic energy of the rod. m/s
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A rod of length L = 10.0 cm that is forced to move at constant speed v = 5.00 m/s along horizontal rails. The rod, rails, and connecting strip at the right form a conducting loop. The rod has resistance 0.400 Ω; the rest of the loop has negligible resistance. A current i = 100 A through the long straight wire at distance a = 10.0 mm from the loop sets up a (nonuniform) magnetic field through the loop. Find the (a) emf and (b) current induced in the loop. (c) At what rate is thermal energy generated in the rod? (d) What is the magnitude of the force that must be applied to the rod to make it move at constant speed? (e) At what rate does this force do work on the rod?
The above picture depicts a moveable vertical conducting bar sliding on fixed conducting rails. At time t, what is the formula for the power delivered by the magnetic field of magnitude B onto the bar of length L that is moving to the right at speed v with current I flowing through it? Group of answer choices + I L B v t 0 + I L B v − I L B v − I L B v t
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a toy train uses a magnetic field to propel it down a track. A series of flat, permanent magnets align the length of both rails of the track. In place of wheels, the train rides an axle that lays across the track. A current flows through the axle at all times. In which direction must the poles of the permanent magnets face in order to propel the train down the rails?
Multiple-Concept Example 2 discusses the concepts that are used in this problem. In the drawing the magnetic field has a magnitude of 1.97 T, the rod has a length of 0.866 m, and the hand keeps the rod moving to the right at a constant speed of 2.02 m/s. If the current in the circuit is 0.0294 A, what is the average power being delivered to the circuit by the hand? Number i X X X X X X X X X X X X hand X X Units X X X X hand X X X
Multiple-Concept Example 2 discusses the concepts that are used in this problem. In the drawing the magnetic field has a magnitude of 1.93 T, the rod has a length of 0.843 m, and the hand keeps the rod moving to the right at a constant speed of 2.31 m/s. If the current in the circuit is 0.0478 A, what is the average power being delivered to the circuit by the hand? Number i X X X X X X X X X hand X X Units X X x X hand X X
I am working on physics homework and am stuck on this one! Help would be great, thank you!
Multiple-Concept Example 2 discusses the concepts that are used in this problem. In the drawing the magnetic field has a magnitude of 1.37 T, the rod has a length of 0.926 m, and the hand keeps the rod moving to the right at a constant speed of 4.68 m/s. If the current in the circuit is 0.0276 A, what is the average power being delivered to the circuit by the hand? Number i X X X X X X X X X T Units X X X X X 7₁ X hand X X X7 X X X X X X hand X X