Enable contrast version

Tutor profile: Hemit G.

Inactive
Hemit G.
Tutor for 4 years
Tutor Satisfaction Guarantee

Questions

Subject: Physics (Thermodynamics)

TutorMe
Question:

Difference between 'Thermodynamics and Heat Transfer'?

Inactive
Hemit G.
Answer:

Thermodynamics mainly deals with the transfer of energy in form of heat or work between systems and surroundings with other systems in form of either heat or work in equilibrium conditions. When there is change in one state, which was in equilibrium state and starting to change in other equilibrium state, this information helps to determine heat or work interactions due to this process. Heat transfer deals with non equilibrium heat exchange or transfer due to temperature gradient while in thermodynamics, during thermal equilibrium (No temperature gradient) no heat exchange is possible.

Subject: Physics (Heat Transfer)

TutorMe
Question:

How is natural convection different from forced convection ?

Inactive
Hemit G.
Answer:

In natural convection, the movement of the fluid is due entirely to density gradients within the fluid (e.g. hot air rises over cold air). There is no external device or phenomenon which causes fluid motion. In forced convection, the fluid is forced to flow by an external factor - e.g. wind in the atmosphere, a fan blowing air, water being pumped through a pipe. Typically heat transfer under forced convection conditions is higher than natural convection for the same fluid.

Subject: Mechanical Engineering

TutorMe
Question:

Though units for pressure and stress are same (i.e N/mm2)What is the difference between stress and pressure?

Inactive
Hemit G.
Answer:

Stress is restoring force developed in the body due to any tensile, compressive or any other force per unit area and on the other hand pressure is force applied on a body per unit area.

Contact tutor

Send a message explaining your
needs and Hemit will reply soon.
Contact Hemit

Request lesson

Ready now? Request a lesson.
Start Lesson

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 Lesson" 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.