* Joules (J) measure energy, which is the capacity to do work.

* Watts (W) measure power, which is the rate at which energy is used or transferred.

Think of it this way:

* Energy is like the amount of fuel you have in your car.

* Power is like how fast you're using that fuel to drive.

To relate joules and watts, you need a time component:

* 1 watt (W) = 1 joule per second (J/s)

So, to find out how many watts are equivalent to 17,280,000 joules, you need to know over what time period that energy is used.

Example:

* If 17,280,000 joules of energy are used in 1 hour (3600 seconds), then the power is:

17,280,000 J / 3600 s = 4800 watts

In short, you need to know the time over which the energy is used to convert joules to watts.