Interested to Buy Any Domain ? << Click Here >> for more details...
Three solid objects of the same material and of equal mass –
a sphere, a cylinder (length = diameter) and a cube – are at
5000C initially. These are dropped in a quenching bath
containing a large volume of cooling oil each attaining the
bath temperature eventually. The time required for 90%
change of temperature is smallest for
a) cube
b) cylinder
c) sphere
d) equal for all the three
whyyyyyyy???????
- 3 Answers
- 7545 Views
- GATE, I also Faced
- E-Mail Answers
Answer Posted / vas
answer 1 (cube) is correct since temp change depends on few
factors, one of which is footage (S) of contact between the
body and substance. Among other equal factors the footage
is different. Thus, the only problem for us here is to find
out solution how to compare footages of the bodies we have.
Since we know that their weights are equal and know the
formulas for figuring out their weights, we will find soon
that the smallest S belongs to the cube, consequently the
biggest belongs to the sphere.
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
What are the criteria’s involved in choosing mass balances for components?
Why should a magnesium ribbon be cleaned before burning in air?
How can we derive power factor equation p=vi cos phi?
What is the practical particle size limit for pneumatic conveying?
hi, i have completed B.tech Chemical enggneering, plz can anyone provide me GVK BIO company's interview questions. iam attending the interview for the first time..
What is the method involved in analyzing powders for composition?
wha is Adsorption column chromatography?
Explain how can I evaluate the thermal relief requirements for double block-in of 98% sulfuric acid?
What is the ignititon temprecher of Diesel,Petrol&Carosion oil.
On what basis are materials to be crushed evaluated apart from size?
Difference between Synthetic foaming agents V/S Protien based foaming agent?
what is load and what are the types of load?
What is the difference between cfm (cubic feet per minute) and scfm (standard cubic feet per minute)?
hello everyone do anyone have interview questions for any chemical industry please email me at ravijallu.nitj@gmail.com
dear sir/madam, I had applied for the post of officer trainee so plz if u have any papers both technical or aptitude plz inform me on sonalichavan01@gmail.com
