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3 years ago

If it takes 15 minutes to dry your hair with a 1.200 kW hair drier, how much energy is used in drying your hair?

Physics

2 answers:

Elodia [21]3 years ago

6 0

1.2 kW * 0.25 h = 0.300 kWh

Katen [24]3 years ago

5 0

Answer: Option (A) is the correct answer.

Explanation:

The given data is as follows.

Power = 1.200 kW, Time = 15 minutes = $\frac{15min}{60 min/hr}$ = 0.25 hour

Energy = ?

Thus, calculate the energy by using the formula as follows.

Power = $\frac{Energy}{Time}$

Energy = Power × Time

= 1.200 kW × 0.25 hr

= 0.300 kWh

Thus, we can conclude that 0.300 kWh energy is used in drying your hair.

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