One technique of biological medical imaging that does not require the high magnetic fields utilized in MRI is magneto-acoustic (MA) imaging. The sample is placed in a uniform magnetic field, and a low frequency ac current is passed through the tissues of the body, perpendicular to the magnetic field. The current will experience a force due to the field. Since the current is switching direction, the magnetic force switches direction too. Different tissues have different conductivities, and this results in different forces at the boundaries between different types of tissue. This creates ultrasonic waves that can be detected with millimeter resolution. Consider a 0.10-mA current of sodium ions moving as an electrolyte through the extracellular fluid within the tissue. If the current is oriented perpendicular to a 0.15-T magnetic field, what is the magnitude of the force that acts on a 2.0-mm length of the current? Number i Units

One technique of biological medical imaging that does not require the high magnetic fields utilized in MRI is magneto-acoustic (MA) imaging. The sample is placed in a uniform magnetic field, and a low frequency ac current is passed through the tissues of the body, perpendicular to the magnetic field. The current will experience a force due to the field. Since the current is switching direction, the magnetic force switches direction too. Different tissues have different conductivities, and this results in different forces at the boundaries between different types of tissue. This creates ultrasonic waves that can be detected with millimeter resolution. Consider a 0.10-mA current of sodium ions moving as an electrolyte through the extracellular fluid within the tissue. If the current is oriented perpendicular to a 0.15-T magnetic field, what is the magnitude of the force that acts on a 2.0-mm length of the current? Number i Units

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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