a. How much energy is in a quantum of blue light (400 nm) (h = Planck's constant = 6.6×10-34J•S c = Speed of * light = 2.998 x 108 m/s) %3D %3D %3D

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Service Entrance Equipment

The service entrance is where the cables linked with the heaping side of the meter that enter the house or structure. A breaker or wire box is commonly thought of as the electrical entrance in a home. To supply capacity to the dwelling, administration entrance drops are used. The houses can be serviced from the power shaft of the service organisation either overhead or underneath.