Current Attempt in Progress Magnetic resonance imaging (MRI) is a medical technique for producing "pictures" of the interior of the body. The patient is placed within a strong magnetic field. One safety concern is what would happen to the positively and negatively charged particles in the body fluids if an equipment failure caused the magnetic field to be shut off suddenly. An induced emf could cause these particles to flow, producing an electric current within the body. Suppose the largest surface of the body through which flux passes has an area of 0.037 m² and a normal that is parallel to a magnetic field of 1.9 T. Determine the smallest time period during which the field can be allowed to vanish if the magnitude of the average induced emf is to be kept less than 0.0091 V. B (out of screen) Units V

Current Attempt in Progress Magnetic resonance imaging (MRI) is a medical technique for producing "pictures" of the interior of the body. The patient is placed within a strong magnetic field. One safety concern is what would happen to the positively and negatively charged particles in the body fluids if an equipment failure caused the magnetic field to be shut off suddenly. An induced emf could cause these particles to flow, producing an electric current within the body. Suppose the largest surface of the body through which flux passes has an area of 0.037 m² and a normal that is parallel to a magnetic field of 1.9 T. Determine the smallest time period during which the field can be allowed to vanish if the magnitude of the average induced emf is to be kept less than 0.0091 V. B (out of screen) Units V

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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Which statement is correct about antiferromagnetic materials? а. Metal centers have no interaction with each other b. Magnetic dipoles are aligned in the same direction. С. Neighboring magnetic dipoles are aligned in opposite direction d. Antiferromagnetic materials are attracted to the magnetic field of a magnet.
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3. DETAILS MY NOTES You are working during the summer at a company that builds theme parks. The company is designing an electromagnetic propulsion system for a new roller coaster. A model of a substructure of the device appears in the figure below. The rod is of length d = 1.00 m and mass m = 0.700 kg. The rod carries a current I = 100 A in the direction shown and rolls along the rails of length L = 15.0 m without slipping. The entire system of rod and rails is immersed in a uniform downward-directed magnetic field with magnitude 8 = 1.90 T. The electromagnetic force on the rod is parallel to the rails, causing the rod to roll to the right in the figure. When a full-scale device is produced, this rod will represent the axle of wheels on which the car and i on the grounds of the company. By projecting the rod from the rails in a horizontal direction from a height h = 1.80 m, the projection speed can be determined from how far from the ends of the rails the rod hits the ground. Your…
Which of the following statements is FALSE? A. Magnetic field lines emanate from the north pole of a bar magnet. B. Magnetic field lines form closed loops. C. Magnetic field lines show weaker intensity at denser parts. D. Magnetic field lines do not intersect with each other. E. None of the above
Physics 212 - Module 5 Hands On Activities Packet 2. A mass spectrometer is used to determine the mass of the ions in a sample. Once the mass of the ions are known one can determine what molecular composition of the sample. The Behrend chemistry department has several mass spectrometers. A new singly charged ion (the sign of the charge is unknown but we know it is either te or-e) enters a velocity selector as shown with crossed electric and magnetic fields of magnitude E and B. Only ions with the selected speed then leave through the right hole and enter a region with the same magnetic field B but no electric field. The magnetic force then causes the charges to move in a semi-circular path of radius r as shown. By measuring r one can determine the mass of the ions. a. Is the ion positive or negative? • 8 times as large • a factor of √2 as large • 1/2 as large b. Determine the mass of the ion in terms of e, B, E and/or r. Show work. Note: your answer should not contain the speed v. .8…
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View Policies Current Attempt in Progress An a-particle has a charge of +2e and a mass of 6.64 x 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.63 x 106 V and then enters a uniform magnetic field whose magnitude is 2.43 T. The a-particle moves perpendicular to the magnetic field at all times. What is (a) the speed of the a-particle, (b) the magnitude of the magnetic force on it, and (c) the radius of its circular path? Parallel plate capacitor B (into screen) (a) Number i (b) Number i (c) Number i VA TH VB Units Units Units v
Which of the following statements best describes Oersted’s Principle? a. A current-carrying conductor produces a linear magnetic field from the north to the south pole b. A current-carrying conductor creates a circular magnetic field around a wire c. A solenoid will create a magnetic field similar to that of a bar magnet d. A charge entering a magnetic field will undergo circular motion e. None of the above explain Oersted’s Principle
Figure shows four particles moving to the right as they enter a region of uniform magnetic field, directly into the page. All particles move at the same speed and have the same charge. Which particle has the least mass?