1.The Easter Bunny is trying new things so, instead of a basket of candy, she left you a funnybunny bar, a giant magnet, and parallel copper rails that are a distance, L = 80 cm apart,and are connected at each end by a light bulb as shown in the figure. (15 points)The Easter Bunny also left instructionson how to light the bulbs, which haveresistances, R₁ = 2, and R₂ = 3.She said you needed to slide thebunny bar across the frictionless rails,perpendicular to the uniform magneticfield, B = 0.75 T, produced by the giantmagnet. So that's what you did.R₁×× ×ひR2(a)Sketch the direction of the induced× ××current through each bulb when you pullthe bar to the right as shown in the figure.(b) Start from basic equations (not memorized solutions) and derive a symbolic expression forthe magnetic force on the sliding bunny bar in terms of L, R₁, R2, B, and v, as needed.(c)=2.1 N, how fast will it be movingappIf you pull the bar to the right with a constant force, Fwhen the bulbs reach maximum (terminal) brightness?

Answered: Image /qna-images/answer/6c0f062a-0d48-493d-9328-cf2887df9c61.jpg

Answered: 1. The Easter Bunny is trying new…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter22: Magnetism

Section: Chapter Questions

Problem 18PE: An electron in a TV CRT moves with a speed at 6.00107m/s, in a direction perpendicular to the...

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An evacuated tube uses an accelerating voltage of 40 kV to accelerate electrons to hit a copper plate and produce x rays. Non-relativistically, what would be the maximum speed of these electrons?
Lunar astronauts placed a reflector on the Moon's Surface, off which a laser beam is periodically reflected. The distance to the Moon is calculated from the round-trip time. (a) To what accuracy in meters can the distance to the Moon be determined, if this time can be measured to 0.100 ns? (b) What percent accuracy is this, given the average distance to the Moon is 3.84108m ?
An electron in a TV CRT moves with a speed at 6.00107m/s, in a direction perpendicular to the Earth’s field, which has a strength of 5.00105T. (a) What strength electric field must be applied perpendicular to the Earth’s field to make the election moves in a straight line? (b) If this is done between plates separated by 1.00 cm, what is the voltage applied? (Note that TVs are usually surrounded by a ferromagnetic material to shield against external magnetic fields and avoid the need for such a correction.)
1. The force on a wire carrying 8.75 A is a maximum of 1.28 N when placed between the pole faces of a magnet. If the pole faces are 75.4 cm in diameter, what is the approximate strength of the magnetic field? 2. A 60 W fluorescent bulb has resistance of about 12 Ω when cold (30˚C) and 120 Ω when on (hot). Estimate the temperature of the filament when hot assuming an average temperature coefficient of resistivityα = 0.0080(C˚)-1.
1. The force between two long parallel conductors is 15 kg/meter. The conductor spacing is 10 cm. If one conductor carries twice the current of the other, calculate the current in each conductor.? 2.A solenoid 0.2m long has 1000 turns of wire and is oriented with its axis parallel to the earth's magnetic field at a place where the latter is 25micro tesla. What should be the current in the solenoid in order that the field exactly cancels the earth's field inside the solenoid.?
12. In a magnetic field with induction B placed two parallel metal plates, the distance between them is equal to d. The flux of electrons with velocity v between the plates moves rectilinearlyparallel to the plane of the plates. What is the potential difference between the plates?
10-The figure shows a wire loop made of copper wire with a radius of 0.1 cm with side lengths of 20 cm x 80 cm. The short edge of the wire enters the 3x10T magnetic field perpendicular to the page plane with a speed of 0.8 m/s and moves there. Assume that the other short edge always lies outside the magnetic field region. How many Amps is the current in the loop?(Resistivity of copper: 1.68x10-8 ohm.m)
1. A 1.50 V battery is connected in series with a capacitor and a 275Ω resistor. a. What is the charge and the voltage across the capacitor immediately after the switch is closed? b. At steady state, what will be the potential across the capacitor? 2. A loop of wire in the form of a square 1.50 m on each side, its plane makes an angle of 40.0° with a uniform magnetic field of 0.95 T. What is the magnetic flux through the loop?
2. Two long wires carry the same current of 5 A in opposite directions, spaced by 1 cm | as shown 1 em I What is the magnitude and direction of the field right between the two wires, at the location marked with the "x?"
*** 27. Two circular discs form the plates of a capacitor that is placed in a circuit in which a current I = 3 amps is going to the right. Each plate has an area of 10-2 m2. The distance between the plates is 1 cm. Sy bno 0E dignsilollon a) At a time when the charge on the plates is 6 C, find the electric field in the region between the plates. b) If a positive current is flowing, the charge on the capacitor will be increasing. Use the appropriate right-hand rule to find the direction of the magnetic field in the region between the plates of the capacitor. C) Find the magnitude of the magnetic field between the two plates at a distance r = 3 cm from the centerline of the circular plates, as shown. [Hint: You may assume that the magnetic field is constant along the dashed circular path of radius r shown in the figure and that it is everywhere tangent to the circle.]
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