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Physics, 18.08.2019 12:10 timothyashburn8
When you see fireworks, why do you see the blast before you hear the sound?
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Abox that has self-contained cable clamps holds two light switches. a two-wire no. 12 cable with ground feeds the box, and a pair of two-wire no. 12 cables (four conductors) with ground wires leaves the box to feed the light fixtures. the second switch is fed by a no. 12 jumper wire from the first switch. which one of the following box combinations would furnish the minimum allowable volume? a. two 3-inch Ă 2-inch Ă 21â2-inch gangable device boxes b. two 3-inch Ă 2-inch Ă 11â2-inch gangable device boxes c. two 3-inch Ă 2-inch Ă 23â4-inch gangable device boxes d. two 3-inch Ă 2-inch Ă 21â4-inch gangable device boxes
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When you see fireworks, why do you see the blast before you hear the sound?...
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