nicholas33 nicholas33
  • 15-02-2018
  • Physics
contestada

Suppose a vacuum cleaner uses 120 J of electrical energy. If 45 J are used to pull air into the vacuum cleaner, how efficient is the vacuum cleaner?

Respuesta :

SatansGF
SatansGF SatansGF
  • 16-02-2018
Efficiency = 45J/120J = 0.375

Or

0.375 * 100% = 37.5 %
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