On a separate sheet of paper, solve the following problems. vgrans grien Imusly 1. A heat engine has a hot-reservoir temperature of 1200°C. Its cold- reservoir temperature is room temperature air. What is the Carnot efficiency of the engine? (Note that room temperature air is about 25°C.) 2. A heat engine has an efficiency of 52% when it runs with a hot-reservoir temperature of 400°C and cold-reservoir temperature of 50°C. What is the efficiency if the hot-reservoir temperature is raised to 800°C?

Please solve this question,Only if you have knowledge in this concept. Do not post random solutions.

Study Guide Mix n Match:       Heat is Energy moving from low temperature to high temperature. Energy moving from high temperature to low temperature. The same as temperature.       The First Law of Thermodynamics defines The principle of entropy. The Law of heat addition. The conservation of heat.         The greater the difference in temperature between the input                         reservoir and the output reservoir of a heat engine, the Greater the efficiency. Less the efficiency. Efficiency is not affected by temperature.           A Carnot engine Can never be 100% efficient. Can sometimes be 100% efficient. Is always 100% efficient.         When a water is going through a phase change from liquid to gas It gives up 540 cal/g of heat. It absorbs 540 cal/g of heat. It makes a 100oC temperature change.          Displacement is a Scalar Quantity Vector Quantity MKS Quantity        The acceleration at the peak of the rise of a projectile is Equal…

Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 700 kcal have been burned at the end of the workout, what efficiency is the machine using in obtaining this result? %If your actual efficiency is 0.17, how many kcal did you really burn? kcal