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# Help, physics, volumes, Gas,

Sun 6 Jan, 2013 02:59 pm
In a spaceship, dropped items in the cabin accelerate to the floor at 10^-6g, where g is the usual value back at earth. In this micro-gravity environment, a helium-filled balloon can support a 0.1 kg mass of yogurt at rest. CALCULATE THE VOLUME OF HELIUM GAS NEEDED, given the following data.

Mass of empty balloon = 0.01 kg
density of helium = 0.2 kg/m^3
Density of cabin air = 1.2 kg/m^3

State any assumptions, Please provide full solution.
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Type: Question • Score: 1 • Views: 990 • Replies: 4
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contrex

1
Sun 6 Jan, 2013 04:33 pm
isn't 'greatestever' a stupid name, if you can't even do your school homework?
DavJohanis

1
Sun 6 Jan, 2013 06:37 pm
@contrex,
More hot air.
0 Replies

raprap

1
Sun 6 Jan, 2013 07:37 pm
@greatestever298,
Find the total mass to be supported

hint-- it's the mass of the yogurt tin and the mass of the empty balloon.

Find the mass of the helium balloon--

hint its the volume of the balloon in m^3 times the density of helium

Find the mass of the displaced air

hint it's the volume of the balloon in m^3 time the density of the cabin air

The mass of the tin of yogurt and the empty balloon is offset by the mass difference of the helium and the cabin air. Set these equal and solve for volume.

hint-- it's in m^3

Rap
raprap

1
Sun 6 Jan, 2013 09:48 pm
@raprap,
Same as downtown (o.11 m^3)

Rap
0 Replies

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