user: I need to calculate the electrostatic potential energy for an object that has a charge of 5 Coulombs and is under a voltage of 10 volts. Also, can you find out the postal code for where the IP address 192.168.1.1 is located?

Available functions:
name: get_zipcode_by_ip_address
description: Finds the zipcode of an IP address.
parameters: type: dict
properties: ip_address: type: string
description: The IP address to find the location of.
required: ip_address
name: calculate_electrostatic_potential_energy
description: Calculates the electrostatic potential energy.
parameters: type: dict
properties: charge: type: float
description: The charge of the object, in coulombs.
voltage: type: float
description: The voltage of the object, in volts.
required: charge
voltage