関連ワード:
why is efficiency always less than 100 why is efficiency always less than 100 percent why is efficiency of a machine always less than 100 efficiency is always less than 100 because y is efficiency always less than 100 why is the efficiency of a machine always less than 100 percent brainly why is the efficiency of a machine always less than 100 percent why is the efficiency of a machine always less than 100 why efficiency of pulley system is always less than 100 why efficiency of pulley system is always less than 100 give two reasons
