Question

A lawnmower engine running for 20 min does 4,560,000 j of work. what is the power output of the engine? (power: p = w/t)

Answer 1

A. 3800 W

Hope this helps

Answer 2

Step-by-step explanation:

Power is defined as the rate at which work is done in per unit time.

Mathematically,
`Power = (Work)/(Time)`

It is given that work done by engine is 4,560,000 J and time is 20 minutes.

There is 60 seconds in 1 minute. So, convert minutes into seconds as follows.

`20minutes * (60 seconds)/(minute)`

= 1200 seconds

Calculate power output of the engine as follows.

`Power = (Work)/(Time)`

=
`(4,560,000 J)/(1200 sec)`

= 3800 J/s

or, = 3800 Watt

Therefore, the power output of the engine is 3800 Watt.