1500
volume (ml)
1000
liquefaction
500
extrapolation
to absolute zero
-300
0
-200 -100
temperature (c)
e odysseywowe, no
which of the following is not true?
absolute zero on the kelvin scale is -273'c.
liquefaction of the gas occurs at approximately -155°c.
the gas pressure increases as the temperature decreases.
the gas follows a linear relationship between volume and temperature.

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Could we see a galaxy that is 20 billion light-years away?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to