A Carnot engine works between a source at 500 K and a sink at 200 K. What is its efficiency?

Practise more Physics and Chemistry Problems.

Free questions with an explanation for every one, and full timed UNI Admission Exam (Peru) mock tests.

All Physics and Chemistry Problems questions Take a mock test

More Physics and Chemistry Problems questions

A car starts from rest and accelerates uniformly at $3 m/ s^{2}$ for $8$ s. Its final speed is:
A stone is dropped from a height of $45$ m. Taking $g = 10 m/ s^{2}$ and ignoring air, how long does it take to land?
A ball is thrown horizontally at $20 m/s$ from a cliff $80$ m high ( $g = 10 m/ s^{2}$ ). How far from the base of the cliff do…
A $5$ kg block is pulled by a $30$ N force to the right and a $10$ N force to the left. Its acceleration is:
A block slides down a frictionless incline of $3 0^{\circ}$ . With $g = 10 m/ s^{2}$ , its acceleration is:
A $2$ kg object moving at $6$ m/s is stopped by friction over $9$ m. The average friction force is: