×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

some intersting questions

some intersting questions

some intersting questions

(OP)
how the speed of aeroplanes is measured?
eventhough coccnut water is well surounded by shell  what makes the noise when we shake the cocunut?
how to select refrigerants?(whetehr wate can be a refrigerent(economical compared to brine/gycol) for colling to (12C)

RE: some intersting questions

SAR!

Skipped the first question.

Sound travels through anything except vacuum. When you shake a coconut vibrations created will cause sound and the sound passes through the shell and coir and to your ear.

Brine/Glycol are not generally called as refrigerants. They are cooling media. If your application is above 5 deg.C use soft water as cooling medium rather brine for specific heat of water is higher than any brine. (Note: freons are called refrigerants for example)

Regards,

 

RE: some intersting questions

You can measure the spped of an aircraft with a pitot tube. Essentially it compares the static atmospheric pressure where the aircraft happens to be against the air pressure on the front of the aircraft as it flies, and calculates the speed from that.

There are other ways too.

Excessive accuaracy is a sign of poor breeding. -Socrates.

RE: some intersting questions

These days, GPS works pretty good for this sort of thing.

TTFN

RE: some intersting questions

You talking air speed or ground speed?  Just to put a spanner in the prop.

RE: some intersting questions

About the noise from the coconut.

Due to impact noise are created.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources