12. Calculate the power of an appliance that transfers 10,000 J of energy in 2 minutes (1dp)

The power of an appliance is calculated using the formula:

Power = Energy / Time

Given: Energy = 10,000 J Time = 2 minutes = 120 seconds (since power is typically calculated in Watts, which is Joules per second)

Substituting the given values into the formula:

Power = 10,000 J / 120 s = 83.33 W

So, the power of the appliance is approximately 83.3 Watts (to 1 decimal place).

Sure, to calculate the power of an appliance, we use the formula:

Power = Energy transferred / Time taken

Given in the problem, the energy transferred is 10,000 J and the time taken is 2 minutes.

However, in the formula, the time should be in seconds. So, we need to convert 2 minutes into seconds.

1 minute = 60 seconds So, 2 minutes = 2 * 60 = 120 seconds

Now, we can substitute the values into the formula:

Power = 10,000 J / 120 s = 83.33 Watts

So, the power of the appliance is 83.3 Watts (rounded to 1 decimal place).