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Ally Jones

Ally J.

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The drawing shows a square, each side of which has a length of
$L=0.25 \mathrm{m} .$ On two corners of the square are fixed different positive
charges, $q_{1}$ and $q_{2} .$ Find the electric potential energy of a third charge
$q_{3}=-6.0 \times 10^{-9} \mathrm{C}$ placed at comer $A$ and then at corner $B$ .

The drawing shows a square, each side of which has a length of $L=0.25 \mathrm{m} .$ On two corners of the square are fixed different positive charges, $q_{1}$ and $q_{2} .$ Find the electric potential energy of a third charge $q_{3}=-6.0 \times 10^{-9} \mathrm{C}$ placed at comer $A$ and then at corner $B$ .

Physics

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Penny Riley verified

Numerade educator

Many outdoor athletes splurge on a high-end pair of sunglasses. The lenses in these glasses are not a single piece of glass, but are actually composed of multiple layers (see the photo). The antireflective coating at the back of the lens is there to reduce back glare, which is light that strikes the back of the lens and reflects toward the eyes. The antireflective coating consists of a transparent thin film with an index of refraction equal to 1.36. The film, with a thickness of 96.0 m, is applied to the back of the glass lens, which has an index of refraction of 1.52. Which wavelength of light in the visible spectrum is not reflected from the coating, due to destructive interference? Answer should be in nm.

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Donna Densmore verified

Numerade educator

Find all solutions of the equation in the interval [0, 2pi). 2 cos^2 x + sin x = 1 Write your answer in radians in terms of pi. If there is more than one solution, separate them with commas. x =

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