Mathematics, 30.06.2021 17:30 elpancho755
a light bulb's brightness is reduced when placed behind a screen. The amount of visible light produced by the light bulb decrease by 25% with each additional layer that is added to the screen. With no screen, the light bulb produces 750 lumens. Tfhe lumen is a unit for measuring the total quantity of visible light emitted by a source.
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a light bulb's brightness is reduced when placed behind a screen. The amount of visible light produc...
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