Answer
4500000J or 4.5 MJ
Work Step by Step
The formula that will be used here is,
P=$\frac{E}{T}$
where P is Power (in watts), E is Energy (in joules) and T is time (in seconds).
P=1250 W (from data provided in the question)
T= 1 hour or 3600 seconds (as outlined in the question)
Rearranging the formula, we get:
E=$P\times T$
Substituting the values, E is found to be 4500000 J or 4.5 MJ
