Recent content by anuttarasammyak

Forward. I am poor at finding the puzzle here.

I will try. For 1kg liquid water at boiling temperature T under constant pressure p to become steam gas completely, we provide heat which is divided into latent heat and work the system does. $$Q=L+W=L+p(V_g-V_l)$$ In approximation that ##V_l << V_g## for occupied volumes of liquid water and...

As far as I see in the web and AI answers they use Clapeyron Clasusius equation to explain it. I wonder if it is what expected by the homework teacher.

It is a Fourier series which has abundant applications. it has relation with delta function. [EDIT] Though a bit different from your formula, complex Fourier series for Heaviside step function, H(x)=0 for x<0 H(0)=1/2 H(x)=1 for x>0 in period 2##\pi##, is...

Q‘=Q+W > Q where W is work done to the water liquid-steam system in adiabatic compression process from Figure 3 to 4 where number is from the left. I hope this is an answer to OP. [EDIT] It may make the discussion simpler if we assume that 1 kg of water is completely converted into steam of...

Good design. Say steam is ideal gas V=nRT/p Say n and T are fixed, V depends on p which depends on weight.

Area of observable universe is spreading just now. We may be able to find some scientific treasures in new area in future. That seems exciting enough to me. Time machine could be convenient to observe well enlarged observable universe. We can do the same in current physics by staying near...

Volume of 1 kg steam of 100 oC with no dispersion in 100 oC atmosphere seems depend on pressure of atmosphere as variable forgetting that 100 oC is water boiling temperature at standard atmosphere pressure.

I don't see the distinction between separation of variables, $$\Psi(\mathbf{r},t)=R(\mathbf{r})T(t)$$ with trigonometric function T and a standing or stationary wave.

Since latent heat is expressed in J/kg, I think we need to convert the amount into mass.

Fermi Dirac distribution of conduction electron gas in metal for T>0 suggests interaction of electrons including degenerate ones. Two electrons of opposite spins in 1s of helium atom interact by Coulomb force.

Ideally all exhasted plasma has momentum of same direction backward. Exhasuted plasma would have the least mass and the maximum momentum by a proposed reaction. Say $$p >> mc$$ $$E=\sqrt{p^2 c^2 + m^2c^4} \approx pc$$ Superrelativistic. It seems close to photon rocket to me.

Though it is not your case FYI the case of photon rockets $$\frac{v}{c}=\frac{1-r^2}{1+r^2}$$ where v is final velocity achieved and $$r=\frac{initial\ total\ mass\ of\ rocket\ - \ consumed\ as\ fuel\ mass}{initial\ total\ mass\ of\ rocket}=\sqrt{\frac{1-\frac{v}{c}}{1+\frac{v}{c}}}$$...

As for neutrinos emitted from the Sun, apparatus on the spaceship leaving the Sun with near light speed would be able to observe slow neutrinos. In this same sense “red-shift” of neutrinos from distant stars should take place.

FYI of recent progress "XENONnT now extends this legacy, lowering the solar-neutrino energy threshold to 17 keV." https://xenonexperiment.org/xenonnt-first-measurement-of-low-energy-solar-neutrinos-scattering-off-electrons/