Category: physics

physics

By expressing É›0 and μ0 in base SI units (kg, By expressing É›0 and μ0 in base SI units (kg, m, s, A), prove that the only combination of the two with dimensions of speed…

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Fernando detects the electric field from an isotropic source that Fernando detects the electric field from an isotropic source that is 22 km away by tuning in an electric field with rms amplitude of 55…

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Vertically polarized light with intensity I0 is normally incident on Vertically polarized light with intensity I0 is normally incident on an ideal polarizer. As the polarizer is rotated about a horizontal axis, the intensity I…

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A projectile with a mass of 0.08 kg that is A projectile with a mass of 0.08 kg that is propelled by a rail current of 20.0 A will have approximately what exit speed? A.…

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A generator supplies an average power of 12 MW through A generator supplies an average power of 12 MW through a transmission line that has a resistance of 10.0 Ω. What is the power loss…

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You and a friend are sitting in the outfield bleachers You and a friend are sitting in the outfield bleachers of a major league baseball park, 140 m from home plate on a day when…

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At what frequency does the maximum current flow through a At what frequency does the maximum current flow through a series RLC circuit containing a resistance of 4.50 Ω, an inductance of 440 mH, and…

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An alternator supplies a peak current of 4.68 A to An alternator supplies a peak current of 4.68 A to a coil with a negligibly small internal resistance. The voltage of the alternator is 420-V…

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What is the frequency of the microwaves in a microwave What is the frequency of the microwaves in a microwave oven? The wavelength is 12 cm. What is the frequency of the microwaves in a…

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In everyday experience, visible light seems to travel in straight In everyday experience, visible light seems to travel in straight lines while radio waves do not. Explain In everyday experience, visible light seems to travel…

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