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A heart surgeon monitors the flow rate of blood through an artery using an
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Chapter 28 Solutions
Bundle: Physics for Scientists and Engineers with Modern Physics, Loose-leaf Version, 10th + WebAssign Printed Access Card for Serway/Jewett's Physics for Scientists and Engineers, 10th, Multi-Term
- Unreasonable results Frustrated by the small Hall voltage obtained in blood flow measurements, a medical physicist decides to increase the applied magnetic field strength to get a 0.500-V output for blood moving at 30.0 cm/s in a 1.50-cm-diameter vessel. (a) What magnetic field strength is needed? (b) What is unreasonable about this result? (C) Which premise is responsible?arrow_forwardA proton moving in the plane of the page has a kinetic energy of 6.00 MeV. A magnetic field of magnitude H = 1.00 T is directed into the page. The proton enters the magnetic field with its velocity vector at an angle = 45.0 to the linear boundary of' the field as shown in Figure P29.80. (a) Find x, the distance from the point of entry to where the proton will leave the field. (b) Determine . the angle between the boundary and the protons velocity vector as it leaves the field.arrow_forwardA 33.6-meter-long spacecraft flies past a neutron star, and passes through the neutron star s extremely powerful magnetic field of strength 2.16 x 10^4 T. The spacecraft travels at a velocity of 3.06 km/s in a direction perpendicular to the magnetic field; the spacecraft s long axis is also perpendicular to the magnetic field. What is the induced emf (voltage) between the two ends of the spacecraft? O 2.22E+05 V O 2.22E+08 V O 2.22E+09 V O 2.22E+06 Varrow_forward
- Q28.19 (a) How large a current would a very long, straight wire have to carry so that the magnetic field 2.00 cm from the wire is equal to 1.00 G (comparable to the earth’s northward-pointing magnetic field)? (b) If the wire is horizontal with the current running from east to west, at what locations would the magnetic field of the wire point in the same direction as the horizontal component of the earth’s magnetic field? (c) Repeat part (b) except the wire is vertical with the current going upward.arrow_forwardConsider the mass spectrometer shown schematically inFigure P19.15. The electric field between the plates of thevelocity selector is 9.50 x 102 V/m, and the magnetic fieldsin both the velocity selector and the deflection chamber havemagnitudes of 0.930 T. Calculate the radius of the path in thesystem for a singly charged ion with mass m = 2.18 x 10-26 kg.arrow_forwardA strong magnet is placed under a horizontal conducting ring of radius r that carries current Ias shown in Figure P28.27. If the magnetic field B makesan angle 8 with the vertical at the ring's location, what are (a) the magnitude and (b) the direction of the resultant magnetic force on the ring?arrow_forward
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