I need part A and B asap

Part A An idealized voltmeter is connected across the terminals of a 15.0-V battery, and a 75.0-0 appliance is also connected across its terminals. The voltmeter reads 11.9 V. How much power is being dissipated by the appliance? Express your answer with the appropriate units. HA ? P = Value Units Submit Request Answer Part B What is the internal resistance of the battery? Express your answer with the appropriate units. HA ? r Value Units