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NEED HELP PLEASE ASAP The energy output of a fan is 36 kWh. The fan is 75% efficient. How much energy is lost to the surroundings? 12 kWh 36 kWh 48 kWh 84 kWh
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17 votes
17 votes
NEED HELP PLEASE ASAP

The energy output of a fan is 36 kWh. The fan is 75% efficient.
How much energy is lost to the surroundings?

12 kWh
36 kWh
48 kWh
84 kWh

User Contentclown
by
3.1k points

2 Answers

19 votes
19 votes

Answer:

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

⇒ 0.25 kWh

User Ilya Semenov
by
2.9k points
25 votes
25 votes
12 kWh.

The input energy = 36kWh divide by 0.75 = 48kWh

The lost energy = 0.25 x 48kWh = 12kWh


because 25% of input energy is lost to the surrounding.
User Martin Zeltin
by
2.7k points
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