Question

a flashlight bulb uses 1.68 W of power. if it is turned on for 45.0 s, how much energy does it use?(unit=J)PLEASE HELP

Answer 1

75.6J

Step-by-step explanation:

A watt is joule/second [W = J/s]

and they give you the watts and the seconds so you only need to substitute knowing W=joule/second

1.68J/s * 45s = 75.6J