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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.

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