Find the solution of each part of given problem:
Problem: A 20kW electric heater is designed to run using a 120V ac source.
Part A: Find its peak current. Express your answer using two significant figures.
Part B: Find its peak voltage. Express your answer using two significant figures.
Part C: How much energy will you be billed for in a 30-day month if it operates 3.0h per day? Express your answer using two significant figures.
I need tutor help to solve the above question.