A jet airplane with a 82.0 m wingspan is flying at 290 m/s. What emf is induced between wing tips if the vertical component of the Earth's field is 2.70×10-5 T? Is an emf of this magnitude likely to have any consequences? (Explain.) O No
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- Considerable scientific work is currently under way to determine whether weak oscillating magnetic fields such as those found near outdoor electric power lines can affect human health. One study indicated that a magnetic field of magnitude 1.40 x 10-³ T, oscillating at 60 Hz, might stimulate red blood cells to become cancerous. If the diameter of a red blood cell is 7.6 μm, determine the maximum emf that can be generated around the perimeter of the cell. VSuppose you’re on your way to Europe on a plane with a wingspan of 73m at a speed of 950km/h. If the vertical component of the Earth’s magnetic field is 5µT what is the induced electric potential between the wing tips?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 0.041 m² and a normal that is parallel to a magnetic field of 1.4 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 0.013 V. B (out of screen) E
- Some possibly useful numbers = 8.99 x 10° N m2/C2 €0 = 8.85 x 10-12C²/Nm2 4TEO %3D = 10-7Tm/A e = 1.6 x 1019 C me = 9.11 x 10-31kg mp = 1.67 x 10-27kg %3D leV = 1.6 x 10-19 JAn airplane is flying due north at 720 km/h. The Earth’s magnetic field has a northward component of 0.020 mT and a downward component of 0.050 mT (Southern Indiana). (a) If the wingspan (distance between wingtips) is 35 m, what is the motional emf between the wingtips? (b) Which wingtip has the higher electric potential?005 A uniform electric field of magnitude 5.06 x 10 V/m throughout a cylindrical volume re- sults in a total energy of 2.95 µJ. What magnetic field over this same region stores the same total energy? Answer in units of T.
- AM Mon Nov 7 bconline.broward.edu b) 2.1 nT c) 1.6 nT d) 3.1 nT e) 3.6 nT 48 6. The electric field amplitude of the signal at that point is 0.780 V/m. What is the amplitude of the magnetic field of the signal at that point? a) 2.6 T 67% 1What Hall voltage is produced by a 0.180-T field applied across a 2.6-cm diameter aorta when blood velocity is 55.0 cm/s? (in mV)(L11) A thin 0.120 m copper rod on the x-y plane and parallel to the x axis moves with a constant velocity of 4.17 m/s in the +y direction as shown in the figure. There is a uniform magnetic field 5.84E-2 T everywhere in space pointing in the -z direction (into the page). The electric potential is measured to be Va at point a and V₁ at point b. What is the potential difference Va-V₁ (write down the sign and magnitude)? +y Va ZO Vb +x
- A circular loop of wire has an area of 0.30 m2m2 . It is tilted by 50 degrees with respect to a uniform 0.43 TT magnetic field. What is the magnetic flux through the loop? A) 8.3×10−2 T⋅m2T⋅m2 B) 0.15 T⋅m2T⋅m2 C) 0.33 T⋅m2T⋅m2 D) 0.78 T⋅m2T⋅m2 E) 1.5 T⋅m2T⋅m2A 19-turn circular coil of wire has diameter 0.95 m. It is placed with its axis along the direction of the Earth's magnetic field of 44.0 μT and then in 0.200 s is flipped 180°. An average emf of what magnitude is generated in the coil? mV Need Help? Read It Watch It