5) A metal bar with length L= 0.50 m, mass m = 80 gram, and resistance R = 5 N is placed on fri ctionless metal rails that are inclined at an angle Ø = 50° above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B = 0.50T is directed upward as shown in Figure. The bar is released from rest and slides down the rails. After the terminal speed (constant %3D %3D %3D %3D speed) has been reached, at what rate is electrical energy being converted to thermal energy in the resistance of the bar? (g = 10 m/s²). A) 26.01 W B) 72.70 W C) 32.55 W D) 122.86 W E) 127.55 W

5) A metal bar with length L= 0.50 m, mass m = 80 gram, and resistance R = 5 N is placed on fri ctionless metal rails that are inclined at an angle Ø = 50° above the horizontal. The rails have negligible resistance. A uniform magnetic field of magnitude B = 0.50T is directed upward as shown in Figure. The bar is released from rest and slides down the rails. After the terminal speed (constant %3D %3D %3D %3D speed) has been reached, at what rate is electrical energy being converted to thermal energy in the resistance of the bar? (g = 10 m/s²). A) 26.01 W B) 72.70 W C) 32.55 W D) 122.86 W E) 127.55 W

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 84CP: The accompanying figure shows a metal disk of inner radius r1 and other radius r2 rotating at an...

See similar textbooks

Similar questions

The accompanying figure shows a metal disk of inner radius r1 and other radius r2 rotating at an angular velocity while in a uniform magnetic field directed parallel to the rotational axis. The brush leads of voltmeter are connected to the dark's inner and outer surfaces as shown. What is the reading of the voltmeter ?
Design a current loop that, when rotated in a uniform magnetic field of strength 0.10 T, will produce an emf =0 sin t. where 0=110V and 0=110V .
The magnetic field perpendicular to a single sire loop of diameter 10.0 cm decreases fron 0.50 T to zero. The re Is made of copper and has a diameter of 2.0 mm and length 1.0 cm. How much charge moves thrnugh the re while tt field is changing?
The two long, parallel wires shown in the accompanying figure carry currents in the same direction. If I1= 10 A and I2= 20 A, what is tire magnetic field at point P?
A square loop whose sides are 6.0-cm long is made with copper wire of radius 1.0 mm. If a magnetic field perpendicular to the loop is changing at a rate of 5.0 mT/s, what is the current in the loop?
(a) What is the speed of a supersonic aircraft with a 17.0-m wingspan, if it experiences a 1.60V Hall voltage between its wing lips when in level flight over the north magnetic pole, where the Earth's field strength is 8.00105T ? (b) Explain why very little current flows as a result of this Hall voltage.
In the circuit sho in the accompanying figure, the rtd slides along the conducting rails at a constant VelOCity v. The velocity is in the same plane as the rails and directed at an angle 6 to them. A uniform magnetic field Bis directed out of the page. What is the emf induced in the r?
A charge of 4.0C .s distributed uniformly around a thin ring of insulating material. The ring has a radius of 0.20 m and rotates at 2.0104 rev/min around die axis that passes through its center and is perpendicular to the plane of the ring. What is the magnetic field at the center of the ring?
A 10-H inductor carries a current of 20 A. How much ice at 0ºC could be melted by the energy stored in the magnetic field of the inductor? (Hint: Use the value Lf= 334 J/g for ice.)
The magnetic flux through the loop shown in the accompanying figure varies with time according to m=2.00e3tsin(120t) , where m is in milliwebers. What are the direction and magnitude of the current through the 5.00 resistor at (a) t= 0; (b) t=2.17102 s and (c)t=3.00 s?
A 0.50-kg copper sheet drops through a uniform horizontal magnetic field of 1.5 T, and it reaches a terminal velocity of 2.0 m's. (a) What is the net map,-, eh: force on the sheet after it reaches terminal velocity? (b) Describe the mechanism responsible for this force, (c) How much power is dissipated as Joule heating while the sheet moves at terminal velocity?
Check Your Understanding What Is the magnitude of the induced electric field in Example 13.8 at t=0 if r= 6.0cm, R= 2.0cm,n = 2000 turnspermeter, I0= 2.0A, and a = 200s-1?