Respuesta :

it would use half the amount of watts. 

hope it helps :)

Answer:

0.3 Watts

Step-by-step explanation:

We can calculate the watts per hour for one hour:

[tex](3/5)/1=3/5[/tex]

The electric heater uses 3/5 Watts per hour. To determine the Watts that it uses we must multiply by the number of hours it is being used, which is a 1/2 hour:

[tex]=(3/5)\cdot{1/2}=3/10=0.3[/tex]

The electric heaters uses 0.3 Watts of power for 1/2 hour.