A beam of polarized light strikes two polarization sheets. The characteristic di

Question

A beam of polarized light strikes two polarization sheets. The characteristic direction of the second is 45 degree with respect to the incident light. The characteristic direction of the first is at angle theta with respect to the initial beam. Find angle theta for a transmitted beam intensity that is 0.30 times the incident beam intensity. A 1.0-kg copper rod rests on two horizontal rails 1.0 m apart and carries a current of 50 A from one rail to the other. The coefficients of static friction is 0.60. What is the smallest magnetic field (vertical) that would cause the bar to slide with acceleration 0,5 m/s2? What capacitance would you connect across a 1.0-mH inductor to make resulting oscillator at 3.5 kHz?

Explanation / Answer

3.For resonance ?L = 1/?C or, 3500 *0.001 = 1/(3500*C) or, C = 8.16*10^-5 F

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