A kettle is filled with 1650 ml of tap water. The tap water has a temperature of 20°C. (a) Calculate the amount of energy that must be transferred to boil the kettle.

if the forces acting on an object are unbalanced, the object will accelerate in the direction of the net force on the object.

explanation:

this is best explained by having an understanding of newton's second law, which states that f=ma. you see, when the forces are unbalanced, net force (sum of all forces) is not zero. therefore making it necessary for the object to have an acceleration in the direction of the net force.

what is the actual question though?