Question

For how long could 5.5e5 J of energy run a 60 W lightbulb?

Answer 1

Given:

Power = 60 Watts

Work done(Energy) = 5.5e5 Joules

Let's find how long the lightbulb can run.

Apply the formula:

`P=(W)/(t)`

Where:

P is the Power in Watts

W is the work dne in Joules

t is the time in seconds

Since we are to find the time, rewrite the formula for t:

`t=(W)/(P)`

Hence, we have:

`\begin{gathered} t=\frac{5.5e5^{}J}{60\text{ W}} \\ \\ t=(5.5\ast10^5)/(60) \\ \\ t=9166.67\text{ seconds} \end{gathered}`

Therefore, the lightbulb could run for 9166.67 seconds

ANSWER:

9166.7 seconds