Jump to content

Balloon in a car...


w=f[z]

Recommended Posts

isn`t that the reason they only part fill these high altitude weather balloons with helium, and when they get high enough they achieve the spherical shape, but at ground level look more like a baseball in the bottom of a condom.

Link to comment
Share on other sites

The matter is the balloon: the pressure difference between the vacuum and the inside of the balloon would not last. The pressures would attempt to equalize, eventually ending in the popping of the balloon.

 

Obviously you would need sufficiently rugged material to withstand an atmosphere of pressure difference. It was more a gedanken experiment than practical suggestion, though.

Link to comment
Share on other sites

Since nobody has specified the pressure in the helium ballon it is perfectly possible to have a helium balloon in a vacuum. You just need to be sure not to put much helium in it.

BTW, I don't play baseball so I'm no expert but re. "at ground level look more like a baseball in the bottom of a condom". Wouldn't that be the wrong way up?

Link to comment
Share on other sites

BTW, I don't play baseball so I'm no expert but re. "at ground level look more like a baseball in the bottom of a condom". Wouldn't that be the wrong way up?

 

You've got a baseball in a condom, and the problem the mental image poses to you is the orientation?

 

It reminds me of the joke about cold-war propaganda: the Russians asked the US to please send them condoms 12" long x 3" in diameter. LBJ gave the OK, as long as they were marked "medium."

Link to comment
Share on other sites

It's a great oral question, though, IMO. And better suited to oral rather than written exams.

 

 

Apparently the "fastest 1/4 mile" question is even better. It has yet to be solved.... :)

 

Cheers

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.