Final answer:
The Vmc speed for the Piper Seminole is calculated with full power on the operating engine, landing gear retracted, and outside of ground effect.
Step-by-step explanation:
The published Vmc speed for the Piper Seminole is calculated under the specific condition of full power on the operating engine. When determining the minimum control speed (Vmc) for multi-engine airplanes like the Seminole, this speed considers a scenario where one engine has failed, the other is at full power, and the plane has to be controllable by the pilot using available aerodynamic controls. This speed is critical for flight safety, especially during take-off and in climb where engine failure is most critical. Conditions such as retractable landing gear being up or down, the center of gravity (CG) location, and the aircraft being in or out of ground effect may impact Vmc slightly, but by regulation (such as by the FAA), the Vmc must be determined with the aircraft in a configuration similar to take-off, landing gear retracted, and with flaps set as for take-off. Therefore, ground effect, landing gear, and forward CG location are not the conditions under which Vmc is determined.