This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
Step 1: Understand the concept of efficiency. Efficiency is the percentage of input energy that is converted into useful output energy. The remaining percentage of energy is lost, usually as heat or sound. Step 2: Calculate the percentage of energy lost. If a machine has an efficiency of 80%, it means 80% of the energy input is converted into useful work. The energy lost is the difference between the total input energy (100%) and the efficiency. Percentage lost = 100\% - Efficiency Percentage lost = 100\% - 80\% Percentage lost = 20\% The machine loses 20% of the energy. The correct option is C. C. 20% Send me the next one 📸