Time it takes for water to boil

[ian 610]

Homework Statement

a 1200 watt heater is used for raising the temperature of 1 liter of water to boiling point. how long will itake for the water to boil of the initial temperature of the water is 20 degrees celsius? ( 1 cal = 4.19 joules)

Homework Equations

Q = mass * specific heat * (final temperature - initial temperature)

The Attempt at a Solution

basically clueless..

 

[zorro]

First find out the heat required to raise the temperature of 1 L water to boiling point using the equation you have.
Try it then tell me if you have any problem.