Tutorials In Introductory Physics: Homework
1st Edition
ISBN: 9780130662453
Author: Lillian C. McDermott, Peter S. Shaffer
Publisher: PEARSON
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Chapter 21.1, Problem 3aTH
To which of your three classes from section I of the tutorial Magnets and magnetic fields could bar 1 belong? Explain your reasoning and the characteristics that define each of you classes.
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State clearly the principle of Physics that you are using (invoking is the scientific word). Explain (briefly) your methodology. Give any equations that you may use,
1. A coil has 200 turns (loops) each loop has an area of 0.0324 m2. A uniform magnetic field is applied perpendicular to the plane of the coil. The field changes linearly from 0 to 0.50 Wb/m2 in a time of 0.8 s. Find the magnitude of the induced EMF (voltage) in the coil.
The loop of wire shown in (Figure 1) forms a right triangle and carries a current I = 6.00 A in the direction shown. The loop is in a uniform magnetic field that has magnitude B = 3.50 T directed into the screen.What is the magnitude of the net torque on the loop? Calculate the net torque from the torques calculated in part C and also from τ=NIABsinϕ.Express your answer in newton-meters. Enter your answers numerically separated by commas
An electron moves with a speed of 5.0×107 m/s in the directions shown in figure 1 below. A 0.50 T magnetic field points in the positive x-direction.
Part A What is the magnitude of the magnetic force in Figure 1)?Express your answer with the appropriate units.
Part B What is the direction of the magnetic force in Figure 1)?A 45 ∘ to +y and +z B 45 ∘ to +x and −z C +z directionD −z direction
Chapter 21 Solutions
Tutorials In Introductory Physics: Homework
Ch. 21.1 - Based on your experience with electric field...Ch. 21.1 - Carefully draw the magnetic field lines for the...Ch. 21.1 - Based on the magnetic field lines you have drawn,...Ch. 21.1 - Two identical magnets are placed as shown. Using...Ch. 21.1 - To which of your three classes from section I of...Ch. 21.1 - To which of your three classes could bar 2 belong?...Ch. 21.1 - Would end 2A attract, repel, or neither attract...Ch. 21.2 - A magnet is hung by a string and then placed near...Ch. 21.2 - Draw a vector on the diagram to show the direction...Ch. 21.2 - Suppose that a third wire, carrying another...
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- Two straight wires carrying current are fixed at the locations shown in the figure below. Three field points (labeled A, B, and C) are also indicated in the figure. Sketch a vector diagram of magnetic fields produced at points A, B, and C in the corresponding boxes below. In each case, sketch the individual magnetic field vectors produced by each current, as well as the net magnetic field. Be sure to label your vectors clearly. (If one of the vectors is zero, explicitly say so.) Calculate the net magnetic field at point C. Express your answer in vector form.arrow_forwardThe magnetic field in the picture below is uniform and points upward. A wire is normal to the page (going into and out of the paper or computer screen you are looking on). The distance from the wire to point #2 is 1cm. When the wire carries a current, the net magnetic field at point 2 is zero. Point 1 is the same distance from the wire as point 2. Use a vector diagram to determine the net magnetic field at point 1 when the current is on. Point 3 is twice as far from the wire as point 2. Use a vector diagram to determine the net magnetic field at point 3 when the current is on. If the magnetic field at point 3 is 1.0x10-4 T, how much current is flowing in the wire?arrow_forwardAn electron moves with a speed of 5.0×107 m/s in the directions shown in Figure 2 below. A 0.50 T magnetic field points in the positive x-direction. Part A What is the magnitude of the magnetic force in Figure 2)?Express your answer with the appropriate units. Part B What is the direction of the magnetic force in Figure 2?A 45 ∘ to −y and −z B 45 ∘ to +y and +z C −y directionD +z directionarrow_forward
- An electron moves along the z-axis with v = 2.9 x 107 m/s. As it passes the origin, what are the strength and direction of the magnetic field at the following (z, y, z) positions? Correct Part B (0 cm. 0 cm, 2 cm) Express your answers using two significant figures. Enter your answers numerically separated by commas. > View Available Hint(s) B2, By, B; = 0,0,0 T Previous Answers Correct Part C (0 cm 2 cm.2 cm) Express your answers using two significant figures. Enter your answers numerically separated by commas. > View Available Hint(s) να ΑΣφ redo B. By, B: = ( -1.16•10¯17 0,0) O You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Previous Answersarrow_forwardWrite the Biot-Savart law and explain briefly what each term in it represents. Explain also the difference between the magnetic field calculated through the Biot-Savart law and the magnetic field that appears in the magnetic force.arrow_forwardLearning Goal: To understand the magnetic force on a straight current- carrying wire in a uniform magnetic field. What is the direction of the magnetic force acting on the wire in Part B due to the applied magnetic field? Magnetic fields exert forces on moving charged particles, whether those charges are moving independently or are confined to a current-carrying due north wire. The magnetic force F on an individual moving charged particle depends on its velocity v and charge q. In the case of a current-carrying wire, many charged particles are simultaneously in motion, so the magnetic force denends on the total current I and the lenath of due south due east O due west Figure O straight up O straight down Up Part D W + Now let us assume that we are able to reorientate the wire in (Figure 1) and therefore the direction of current flow. S Down Which of the following situations would result in a magnetic force on the wire that points due north? Check all that apply.arrow_forward
- The loop of wire shown in (Figure 1) forms a right triangle and carries a current I = 4.00 A in the direction shown. The loop is in a uniform magnetic field that has magnitude B = 4.00 T directed into the Part D screen. The loop is pivoted about an axis that lies along side PR. Use the forces calculated in part A to calculate the torque on each side of the loop. Express your answer in newton-meters. Enter your answers numerically separated by commas. ? TPR, TPQ, TQR = N.m Submit Request Answer Figure < 1 of 1 Part E What is the magnitude of the net torque on the loop? Calculate the net torque from the torques calculated in part C and also from T = NIAB sin o. Express your answer in newton-meters. Enter your answers numerically separated by commas. 0.600 m ? Tpart C. Trom the Eq.) = N. m -0.800 m Submit Request Answerarrow_forwardIn the diagram at right, an uncharged conducting bar is moving with constant velocity v to the left through a region where there is a uniform magnetic field pointing out of the page. What charge distribution will the bar have, as a result of its motion? B out of page The bottom of the bar will have positive charge, and the top of the bar will have negative charge. The bar will remain electrically neutral at all points. The top of the bar will have positive charge, and the bottom of the bar will have negative charge. The right side of the bar will have positive charge, and the left side of the bar will have negative charge. The bar will gain a net positive charge, distributed uniformly along its length. The bar will gain a net negative charge, distributed uniformly along its length, The left side of the bar will have positive charge, and the right side of the bar will have negative charge.arrow_forwardI. Use the 1st picture as reference for solving, and 2nd picture for answering. Part 1: Find the magnetic field at z=R from the wire. Part 2: How much current is enclosed at 0<z<R?arrow_forward
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THE BAR MAGNET; Author: 7activestudio;https://www.youtube.com/watch?v=DWQfL5IJTaQ;License: Standard YouTube License, CC-BY