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": "calculate_electric_field", "description": "Calculate the electric field produced by a charge at a certain distance.", "parameters": {"charge": {"description": "Charge in coulombs producing the electric field.", "type": "int", "default": 8.854e-12}, "distance": {"description": "Distance from the charge in meters where the field is being measured.", "type": "int", "default": 8.854e-12}, "permitivity": {"description": "Permitivity of the space where field is being calculated, default is 8.854e-12.", "type": "float"}}}, {"name": "bacterial_growth", "description": "Calculates the bacterial population after a given time based on the initial population and growth rate.", "parameters": {"initial_population": {"description": "The initial bacterial population.", "type": "int", "default": 20}, "growth_rate": {"description": "The growth rate per unit time.", "type": "float", "default": 20}, "time": {"description": "The time elapsed.", "type": "float"}, "doubling_time": {"description": "The doubling time of the bacteria in minutes. Defaults to 20.", "type": "float, optional"}}}, {"name": "average", "description": "Calculates the arithmetic mean of a list of numbers.", "parameters": {"numbers": {"description": "The list of numbers.", "type": "List[float]"}}}]
Calculate the electric field produced by a charge of 30 coulombs at a distance of 30 meters in a medium with a permitivity of 9.0e-12.
user
assistant
[{"name": "calculate_electric_field", "arguments": {"charge": 30, "distance": 30, "permitivity": 9e-12}}]