Unlock Thermodynamics Understanding with Expert Help

Is slope of constant pressure line is same or di in liquid region and super heated region for pure substance on $S$ diagram?

Daniella Reyes 2022-09-26

Why does the Gibbs free energy need to be minimized for an equilibrium?
$d G = d E + p d V - T d S$
But $d E = T d s - p d V$ so it should be $d G = 0$ . Why $d G$ is not always zero?

Makaila Simon 2022-09-26

How inexact differential shows work is a path function.

furajat4h 2022-09-25

At what rate does the temperature away from the Sun decrease?

Heergerneuu 2022-09-22

I often see the expression $W = V Δ P$ for the work of a constant volume compression where there are a fixed number of moles and the compression is caused by heating. Is this the work equation for a constant volume, isothermal process where the pressure is increased by adding moles of a gas?

sengihantq 2022-09-01

Is it possible to compress gas without making it hotter?

Gin Redhorse2022-08-31

Calculate the total potential energy, in Btu, of an object with a mass of 140 lbm when it is 7 ft above a datum level at a location where standard gravitational acceleration exists.

chrisysakh 2022-08-26

How to justify Mechanical Works doesn't involve heat variations?

epifizamvg 2022-08-26

If we take the law of an ideal gas:
pV = nRT
We see that reducing the pressure to 0, or close to it, would lead to a similar drop in the temperature.
What would be the temperature inside of a voided (emptied of any gas) chamber? Could we use it as a cooling storage?

fermetrakr 2022-08-25

What is the derivation for $S = k \log N$ , where k is Boltzmann constant, N number of microenergy states.
How is the logarithmic measure justified?

mentare9q 2022-08-20

Given are $p_{1} = 311 kN / m^{2}, T_{1} = 333 K, T_{2} = 853 K$
Find $p_{2}$ ratio $V_{1} / V_{2}$ and R if $ω = 372, 32 kJ/kg$

podmitijuy0 2022-08-16

What does "energetically favorable" mean?

Passafaromx 2022-08-14

I'm currently going through statistical physics, especially on Fermi energy when I came across a term called "quasi-continuum", what exactly is it?

Damon Campos 2022-08-13

Is there a liquid which boils at room temperature and normal pressure, and can we use it to produce electricity?

Bierlehre59 2022-08-13

When we are dealing with a gaseous thermodynamic system, in books it's written that state of the system can be described by only two independent variables from the three (p,V,T) . But it's not written why or how? Why we have to choose only two independent variables, why not more or less? I've gone through some answers but still unable to understand.

vrteclh 2022-08-13

In reversible process, why define $δ W = - P d V$ instead of $δ W = - V d P$ ?

badlife18va 2022-08-12

How to derive an expression for entropy in form of
$S = \ln Ω$
from the form
$S = - \sum_{i} p_{i} \ln p_{i}$ ?

traucaderx7 2022-08-12

Is there an equation for convective heat transfer?

polynnxu 2022-08-11

Why must black hole have entropy?

Leypoldon 2022-08-11

A rigid container holds 3 of air. The air is stirred so that its pressure changes from 500kPa to 2000kPa, while its temperature is held at $50^{\circ} C$ . The heat transferred is 200kJ. Assume the air to behave like an ideal gas with $c_{v} = 0.714 \frac{kJ}{kg \cdot K}$ . Find the final temperature, the change in internal energy, and the work done.

Thermodynamics is the study of energy and how it is transferred, transformed and even conserved. It's an essential branch of physics, and it's used to understand how energy works in many different fields, from manufacturing to engineering to astronomy. It's also used to understand and predict energy-related changes in the environment. Thermodynamics can help us understand how heating and cooling systems work, why the Earth's atmosphere is constantly changing, and even the formation of stars and galaxies. It's a fascinating field, and one that offers a great deal of insight into the world around us.

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