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**Homework Statement**

I have a question that involves comparing the energy output of a laser to the energy required to make tea. I've already calculated the energy to make tea and I know what to do to find how long it takes to make the tea but I'm struggling with the energy output part.

It says: The Nova laser at Lawrence Livermore National Laboratory in California is used in studies of initiating controlled nuclear fusion . It can deliver a power of 1.60 × 1013 W over a time interval of 2.50 ns.

**The attempt at a solution**

So initially I multiplied the W by the ns (converted to s) to find the Watts over an interval of 1 second but idk if that worked..... then I divided it instead but I don't think that's right either.... Now i'm going to try just substituting the nanoseconds and the watts into an equation to find the time and see if it works! But i'm still quite confused.