Final volume of a falling droplet


by eng442
Tags: droplet, falling, final, volume
eng442
eng442 is offline
#1
Jan29-13, 02:33 PM
P: 1
First of all, do falling droplets have a final volume like falling bodies have a final velocity - in air?

If so, is there a way to determine such volume for a specific liquid and a specific height? More specifically, the final volume of a semen droplet falling from a 1km height.
Phys.Org News Partner Physics news on Phys.org
Sensitive detection method may help impede illicit nuclear trafficking
CERN: World-record current in a superconductor
Beam on target: CEBAF accelerator achieves 12 GeV commissioning milestone
tiny-tim
tiny-tim is offline
#2
Jan29-13, 03:03 PM
Sci Advisor
HW Helper
Thanks
tiny-tim's Avatar
P: 26,167
hi eng442! welcome to pf!

water is, for all practical purposes, incompressible

so (although the shape may change) the volume will be constant
Andy Resnick
Andy Resnick is offline
#3
Jan29-13, 07:35 PM
Sci Advisor
P: 5,467
Quote Quote by eng442 View Post
<snip>More specifically, the final volume of a semen droplet falling from a 1km height.
Eh?

There will be some evaporation, but that depends on the details- temperature(s), relative humidity, etc..

Odd question....

Spinnor
Spinnor is offline
#4
Jan29-13, 07:55 PM
P: 1,360

Final volume of a falling droplet


Quote Quote by eng442 View Post
First of all, do falling droplets have a final volume like falling bodies have a final velocity - in air?

If so, is there a way to determine such volume for a specific liquid and a specific height? More specifically, the final volume of a semen droplet falling from a 1km height.
I have never seen rain drops the size of breasts, even small breasts, though possibly the size of a nipple. So yes, if you could form a very large drop of water, say the size of your typical breast then after falling for a kilometer the large drop would break apart towards some maximum size. If on the other hand you had a cubic kilometer of water and could drop it a distance of one kilometer, all at once, I think you might have some very large drops?


Register to reply

Related Discussions
final concentrations unknown volume Chemistry 1
Electric Charge of Water droplet falling Introductory Physics Homework 2
Find the final volume Advanced Physics Homework 2
Falling Water Droplet Advanced Physics Homework 1
Finding Final Volume - almost got it Introductory Physics Homework 2