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## New answers tagged ideal-gas

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An ideal gas undergoing an adiabatic transformation is subjected to the law: $$P\,V^{\gamma} = \operatorname{constant};$$ Where $\gamma$ is a nice fraction that depends on the number of atoms in the gas molecule. For a mono atomic gas (like helium) $\gamma = 5/3$, for a diatomic gas (like hydrogen, oxygen, nitrogen...) and linear molecules (like carbon ...

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As long as you are familiar with the equation $W=-\int P\ dV$, this should be pretty straightforward. If you aren't, there should be a derivation for this formula in your text. The ideal gas law states: $$PV=nRT \rightarrow P=\frac{nRT}{V}$$ We know that $n$ and $R$ are constant and that the temperature, $T$, is constant because the process between $a$ ...

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I'm just going to quote Wikipedia here: For the case of two colliding bodies in two dimensions, the overall velocity of each body must be split into two perpendicular velocities: one tangent to the common normal surfaces of the colliding bodies at the point of contact, the other along the line of collision. Since the collision only imparts force along ...

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If I have a velocity which has some component $v_x$ in the $x$-direction, then is there any reason for you to assume you know anything anything about the component of my velocity which might be in a perpendicular direction, $v_y$? No. So you can see that it is reasonable to assume that, if you know my $v_x$, my $v_y$ is still unconstrained, i.e. you have ...

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The ratio of masses is 7:1 in the compound but Nitrogen has 14 times the mass of Hydrogen as single atoms so there must be twice as many Hydrogen atoms as Nitrogen atoms i.e. the formula must be NH_2

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While studying the behavior of a gas filled balloon on cooling down, one needs to understand how the gases behave while being cooled. A helium filled balloon immersed in liquid nitrogen would just undergo shrinkage due to contraction of helium gas. On the other hand, a balloon filled with air will behave differently. Air roughly contains 77% nitrogen, 22% ...

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