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11Alexandr11 [23.1K]
2 years ago
3

The energy output of a blender is 1.4 kWh. If the blender is 85% efficient, how much energy is lost to the surroundings? kWh

Physics
2 answers:
jenyasd209 [6]2 years ago
5 0

Answer:

The correct answer is 0.25

Explanation:

steposvetlana [31]2 years ago
4 0

Answer: 0.3 Kwh


Explanation:


1) Data:

a) energy output = 1.4 kWh

b) efficiency =  85%

c) energy loss = ?


2) Formulas

a) efficieny = (energy output / energy input) × 100

b) energy loss = energy input - energy output


3) Solution

a) energy output

efficiency = (energy output / energy input) × 100 ⇒

energy input = energy output × 100 / efficiency = 1.4 Kwh × 100 / 85 ≈ 1.7 Kwh


b) energy loss = 1.7 Kwh - 1.4 Kwh = 0.3 Kwh.


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