TutorMe homepage

SIGN IN

Start Free Trial

Clare Z.

Mechanical Engineer

Tutor Satisfaction Guarantee

Physics (Thermodynamics)

TutorMe

Question:

What does the area under a T-S curve on a Temperature vs. Entropy diagram represent?

Clare Z.

Answer:

The area under a T-S curve is the calculated heat rejected or absorbed into the system. In order to calculate the heat of the system, take the first derivative of the function to find the area under the curve.

Mechanical Engineering

TutorMe

Question:

Which cycle does an aircraft gas turbine operate on?

Clare Z.

Answer:

An aircraft gas turbine operates on the Brayton Cycle. The Brayton cycle is a thermodynamic cycle that describes the workings of a constant pressure heat engine. In order to analyze a Brayton Cycle, it is best to solve the problem as a closed system, with the assumption that the exhaust is fed back into the intake. When viewing the cycle on a T-S diagram, in which the four stages of the cycle are graphed with respect to temperature and entropy, the stages where the pressure is constant can be easily recognized as the sloped lines connecting stages 2 and 3, and 4 and 1. It is during these constant pressure stages in which heat is absorbed and released from the system. The four stages are described as 1) adiabatic compression 2) isobaric heat addition 3) adiabatic expansion 4) isobaric heat rejection

Calculus

TutorMe

Question:

What is the second derivative of x^2?

Clare Z.

Answer:

The derivative of a function is the "rate of change." The first derivative, x' of x^2 can be found using the following formula: x' = n*x^(n-1). Therefore, the 1st derivative of x^2, when n=2 is: x' = (2)x^(2-1) = 2x. The second derivative of x^2 when n=1 is: x'' = 2x^(1-1) = 2.

Send a message explaining your

needs and Clare will reply soon.

needs and Clare will reply soon.

Contact Clare

Ready now? Request a lesson.

Start Session

FAQs

What is a lesson?

A lesson is virtual lesson space on our platform where you and a tutor can communicate.
You'll have the option to communicate using video/audio as well as text chat.
You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.

How do I begin a lesson?

If the tutor is currently online, you can click the "Start Session" button above.
If they are offline, you can always send them a message to schedule a lesson.

Who are TutorMe tutors?

Many of our tutors are current college students or recent graduates of top-tier universities
like MIT, Harvard and USC.
TutorMe has thousands of top-quality tutors available to work with you.

Made in California

© 2018 TutorMe.com, Inc.