Physical Science

posted by .

The second law of thermodynamics forbids a heat engine to have thermal efficiency of what?

  • Physical Science -

    greater than Carnot cycle

    1 - (Tcold/Thot)

    T in KELVIN (dge C + 273)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics.

    Heat engine X takes four times more energy by heat from the hot reservoir than heat engine Y. Engine X delivers two times more work, and it reject seven times more energy by heat to the cold reservoir than heat engine Y. Find the efficiency …
  2. thermodynamics

    3.4 A heat engine operates between two heat reservoirs with temperatures of 560 and 280 K a) The heat engine itself has a temperature of 560 K during heat addition from the 560 K reservoir and a temperature of 280 K during heat rejection …
  3. physics

    A Carnot engine is operated between two heat reservoirs at temperatures 520 K and 300 K. (a) If the engine receives 6.45 kJ of heat energy from the reservoir at 520 K in each cycle, how many joules per cycle does it reject to the reservoir …
  4. Physics help please!

    The engine has an efficiency e1. The engine takes input heat Qh from a hot reservoir and delivers work W1. The heat rejected by this engine is used as input heat for a second engine, which has an efficiency e2 and delivers work W2. …
  5. Physics

    In each cycle of its operation, a heat engine expels 6,100 J of energy and performs 1,300 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle?
  6. PHYSICS DUE SOON

    In each cycle of its operation, a heat engine expels 6,100 J of energy and performs 1,300 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle?
  7. thermodynamics

    equal to 1/4 th of the heat rejected to the sink. the efficiency of the engine is
  8. Thermodynamics

    A lawnmower tractor engine produces 18hp using 40kW of heat transfer from burning fuel. Find the thermal efficiency and the rate of heat transfer rejected to the ambient. I converted the power to 13.24kW then found the efficiency by …
  9. Physics

    In each cycle of its operation, a heat engine expels 2400 J of energy and performs 1800 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle?
  10. thermodynamics

    A heat engine, X, operates between a reservoir at 1000˚C and a body at 600˚C. Heat transfer to the heat engine is 1000 kJ and work output is 220 kJ. Another Engine, Y, operates between, the body at 600˚C and the atmosphere at 27˚C. …

More Similar Questions