Final answer:
The statement is false; peak power refers to the maximum output achievable briefly, typically for a few seconds, not 20-30 seconds, due to energy source depletion.
Step-by-step explanation:
The statement that peak power can be sustained for 20-30 seconds is false. Peak power is the maximum amount of power an individual can produce, but it can be maintained only for a very short time, generally just a few seconds, due to the depletion of phosphocreatine stores in the muscles. For sustained activity over several minutes, a lower power output is more realistic. For example, a person in good physical condition can generate about 100 W of useful power for several hours. In the context of electricity, such as with a generator, it is the continuous, not peak, power that is typically sustained over longer periods.