# An electric fan has a power output of 60 W. How much work is done if the fan operates for 120 s?

##### 1 Answer

Jun 3, 2016

#### Answer:

#### Explanation:

Recall the formula for power:

#color(blue)(|bar(ul(color(white)(a/a)P=W/(Deltat)color(white)(a/a)|)))#

#ul("where")# :

#P=# power

#W=# work

#Deltat=# change in time

To determine the work done, you need to rearrange the formula and solve for

Rearranging the formula,

#W=PDeltat#

Plug in the values.

#W=(60W)(120s)#

Solve.

#W=7200J#

Accounting for the appropriate number of significant digits,

#W~~color(green)(|bar(ul(color(white)(a/a)7000Jcolor(white)(a/a)|)))#