ivyscott ivyscott
  • 31-12-2020
  • Mathematics
contestada

A 150 W driveway light produces 9.3 × 104
J of light energy
over a 4.0 h period. If the light uses 2.06 × 106
J of energy in
the 4.0 h, then what is its efficiency?

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Respuesta :

tracyroberts1234 tracyroberts1234
  • 31-12-2020

Answer:

4.51456%

Step-by-step explanation:

Efficiency equation: output/input*100%

(9.3*10^4)/(2.03*10^6)*100 = 4.51456%

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