Physics - June 2006

The gas inside a balloon will always have a pressure nearly equal to atmospheric pressure, since that is the pressure applied to the outside of the balloon. You fill a balloon with helium (a nearly ideal gas) to a volume of 0.580 L at a temperature of 18.5 degrees C. What is the volume of the balloon if you cool it to the boiling point of liquid nitrogen, 77.3 K?

2006-06-26 22:35:20 · 10 answers · asked by Sagely 4

2006-06-26 22:33:50 · 15 answers · asked by Thinker 2

What volume is occupied by this amount of water? The molar mass of water is 18.0 g/mol.

Imagine the molecules to be, on average, uniformly spaced, with each molecule at the center of a small cube. What is the length of an edge of each small cube if adjacent cubes touch but don't overlap?

and finally....How does this distance compare with the diameter of a molecule?

2006-06-26 22:32:37 · 3 answers · asked by Sagely 4

A cylinder with a height of 1.30 m and an inside diameter of 0.100 m is used to hold propane gas (molar mass 44.1 g/mol) for use in a barbecue. It is initially filled with gas until the gauge pressure reads 1.4×10^6 Pa and the temperature is 23.0 degrees C. The temperature of the gas remains constant as it is partially emptied out of the tank, until the gauge pressure reads 2.4×10^5 Pa.

Calculate the mass of propane that has been used.
Use 8.31 J/(mol*K) for the ideal gas constant.

2006-06-26 22:29:41 · 8 answers · asked by Sagely 4

A gas undergoes two processes. In the first, the volume remains constant at 0.250 m^3 and the pressure increases from 2×10^5 Pa to 6×10^5 Pa. The second process is a compression to a volume of 8.00×10^(−2) m^3 at a constant pressure of 6×10^5 Pa.

Find the total work done by the gas during both processes in joules.

2006-06-26 22:25:33 · 7 answers · asked by Sagely 4

A gas in a cylinder is held at a constant pressure of 2.2×10^5 Pa and is cooled and compressed from a volume of 1.79 m^3 to 1.30 m^3. The internal energy of the gas decreases by 1.37×10^5 J.
Find the work done by the gas.

Find the absolute value |Q| of the heat flow into or out of the gas.

2006-06-26 22:20:29 · 3 answers · asked by Sagely 4

2006-06-26 21:21:52 · 7 answers · asked by sa m 1

2006-06-26 19:07:30 · 3 answers · asked by Mujaahid 3

this meen's all dementia's are infinite if so, there are only 3 ; Einstien has a problem wich say's if 4 demention's exist infinite demention's was there, please tell me as much as you possibly can

2006-06-26 18:52:25 · 6 answers · asked by Anonymous

2006-06-26 18:51:28 · 17 answers · asked by Anonymous

Just Hypothedically

2006-06-26 17:15:45 · 12 answers · asked by Anonymous

2006-06-26 17:11:28 · 7 answers · asked by shaiks 1

2006-06-26 16:44:32 · 1 answers · asked by goring 6

2006-06-26 16:39:08 · 5 answers · asked by Anonymous

why is it that the suns rays take 8 min to hit us on earth but if the sun was to explode the last light would hit us in 8 min but gravity would pull us away from the sun at a faster rate tus making gravity faster then light

2006-06-26 15:33:27 · 21 answers · asked by crestinwanker 1

2006-06-26 14:56:57 · 5 answers · asked by Mick 2

I gave wrong information concerning the finding of gold percent in the kings crown.

2006-06-26 14:50:21 · 6 answers · asked by Anonymous

correct me if i'm wrong, but it appears that they are looking for a fight. Where as others who are asking a science based question are seeking an answer, the true nature of science.

2006-06-26 14:22:26 · 6 answers · asked by Z-cakes 2

2006-06-26 14:16:34 · 17 answers · asked by misshyong 1

Me thinks yes, and multidimensional, symmetric w/ space (it's 3D)

2006-06-26 14:11:44 · 5 answers · asked by david b 1

2006-06-26 13:52:22 · 11 answers · asked by some guy 1

2006-06-26 13:39:20 · 8 answers · asked by Anonymous

When I'm stopped or passing under traffic lights in the city my radio (no matter what station) will get static. There doesn't seem to be a pattern to which traffic lights or what stations.

2006-06-26 13:20:02 · 3 answers · asked by John G. 1

still how much energy is transferred ?

2006-06-26 13:16:11 · 4 answers · asked by meanblacktiger 5

If there was an infinite row of perfectly align dominoes on a floor with a high coefficient of friction (so the dominoes act as if they are on a hinge), does the rate of dominoes toppled per second only reach a maximum rate at the point of infinity or does is there a definite maximum value or will the value keep increasing forever (forgetting about reletivistic issues)? (assume that the dominoes lose energy when they hit eachother)

2006-06-26 11:14:10 · 13 answers · asked by Haruki 1

I believe it's electrical charges, as in electrons and protons. Objects are drawn to each other. This is an electromagnetic universe. See also my question on planets in Astronomy. This is how anti-gravity would be harnessed, and how flying saucers would levitate.

2006-06-26 11:02:26 · 12 answers · asked by ? 2

2006-06-26 10:17:22 · 4 answers · asked by Ziggi 1

2006-06-26 10:02:20 · 8 answers · asked by justin t 1

and the version illustrated in the movie 'what the bleep do we know?"

2006-06-26 09:52:07 · 8 answers · asked by hmc121667 3

2006-06-26 08:25:22 · 6 answers · asked by ten speed 1