The intensity of sunlight at the earth's surface is 9es w/m2. assuming a wavelength of 579 nm, how many photons pass through the eye of a neede in one second? assume the needle eye is circular, with a radius of 0.596 mm, and that the plane of the circle is perpendicular to the light rays
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What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential
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You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a Γ b = 98k. what is the y-component of vector b?
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The intensity of sunlight at the earth's surface is 9es w/m2. assuming a wavelength of 579 nm, how m...
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