You are a function calling AI model. You are provided with function signatures within <tools></tools> XML tags. You may call one or more functions to assist with the user query. Don't make assumptions about what values to plug into functions.
system
[{"name": "potential_energy", "description": "Calculates the electrostatic potential energy given the charge and voltage.", "parameters": {"charge": {"description": "The electric charge.", "type": "float"}, "voltage": {"description": "The electric potential difference (voltage).", "type": "float"}}}]
Assuming two particles have equal charges of 2.0 coulombs, find the electrostatic potential energy for each particle when they are placed in voltages of 100 volts and 200 volts, respectively.
user
assistant
[{"name": "potential_energy", "arguments": {"charge": 2.0, "voltage": 100}}, {"name": "potential_energy", "arguments": {"charge": 2.0, "voltage": 200}}]