Induced Voltages and Inductance18320.18From B vε=, the required speed is A()()()()0.500 A6.00 1.00 m s2.50 T1.20 mvΩ=AAIRBBε===20.19Bvε⊥=AvG, where is the component of the magnetic field perpendicular to the velocity . Thus, B⊥()()()650.00Tsin58.060.0 m300 m s0.763 V1ε−°==×20.20The speed of the beam after falling freely for 9.00 m, starting from rest (), is 00yv=()()()2202029.80 m s9.00 m13.3 m syyyvvay=+∆=+−−=BvSince the induced emf is ε⊥=AB, where ⊥is the component of the magnetic field perpendicular to the velocity vG, we find ()()()6318.010T13.3 m2.8710V2.87 mV12.0 msε−−=×=×=20.21(a) Observe that only the horizontal component, Bh, of Earth’s magnetic field is effective in exerting a vertical force on charged particles in the antenna. For the
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