Question

How many watts do I consume if I eat a 600-Calorie sandwich in 600 seconds?

Answer 1

Given:

Energy consumed = 600 calorie = 0.6 kilo-calorie

Time taken = 600 seconds

To Find:

We have to calculate the power

Solution:

We know that,

1 J (joule)  = 0.2389 kilo-calorie,

Thus, we can convert given calories into joules

0.6 kilo-calorie =  $\dfrac{0.6}{0.2389}$  =  2.511 J

Now, we also know that

Power (watt) = $\dfrac{Energy (J)}{Time(sec)}$

Using the above formula,

Power = $\dfrac{2.511}{600}$ = 0.0042 watts

Thus, the person consumed 0.0042 watts of power