A hair dryer uses 75,000 joules of energy in 60 seconds. What is the power of this hair dryer?

Power is the amount of energy transferred in a second or, to put it more simply, the rate of energy transfer with time. In your case:

The power of the hair dryer can be calculated using the formula:

[ \text{Power} = \frac{\text{Energy}}{\text{Time}} ]

Given:

• Energy used by the hair dryer (E) = 75,000 joules
• Time taken (t) = 60 seconds

Using the formula:

[ \text{Power} = \frac{75,000 , \text{joules}}{60 , \text{seconds}} ]

[ \text{Power} = 1250 , \text{watts} ]

Therefore, the power of the hair dryer is 1250 watts.

To calculate the power of the hair dryer, you can use the formula:

Power (P) = Energy (E) / Time (t)

Given that the hair dryer uses 75,000 joules of energy in 60 seconds:

Power (P) = 75,000 joules / 60 seconds

Now, you can calculate the power:

P = 1250 watts

Therefore, the power of this hair dryer is 1250 watts.