Master Your Thermal Physics: In-Depth Examples

High School
Physics
Thermal Physics

If we keep the voltage in a circuit constant, then
$H = \frac{V^{2}}{R} t$
so if I increase the resistance, the current must decrease and so the heat will be less. Then why can't we use very good conductors, like copper, for heat formation?

Aryanna Fisher 2022-11-22

Let's say I supply heat Q to a system. If it's internal energy increases by U and the work done on it is W then by the first law of thermodynamics, Q = U + W. Now, let's say that due to the thermal expansion, the gravitational potential energy of the system also increases by P. Would it be right to say Q = U + W + P? What if the kinetic energy also increases(by K), is it right to say Q = U + W + P + K

linnibell17591 2022-11-20

If 50 degrees Fahrenheit - what is the temperature in degrees Celsius and Kelvin (F = 1.8C +32)?

Aliyah Thompson 2022-11-16

In thermodynamics, the enthalpy of a system is defined as the sum of the internal energy of the system and the product of its pressure and volume. Since it is just a combination of other state properties of the system, why need we define it at all?

hinalkuntar 2022-11-15

Arendrogfkl 2022-11-15

Given two boiling temperatures and pressures, how can I find the latent heat?

Simone Watts 2022-11-08

Why is the cyclic volume integral of $P / T$ larger than the one of $P_{e} x t / T$ in an irreversible process?

Annie French 2022-11-08

Why are ceramic containers used for hot beverages? For example, is it dangerous to use plastic? Are there any other reasons other than to protect hands from heat?

evitagimm9h 2022-11-07

The formula for converting a Celsius temperature to a Fahrenheit temperature is: $F = C \times 9 / 5 + 32$
If C = 100 degrees, what is the equivalent Fahrenheit temperature?

reevelingw97 2022-11-07

I have to prove, considering the limits of high and low temperatures, duality equation:
$Z = q e^{2 N K} F (e^{- K}) = q^{- N} {(e^{K} + q - 1)}^{2 N} F (\frac{e^{K} - 1}{e^{K} + q - 1})$
for square lattice with
$Z = \sum_{σ_{1}, σ_{N}} \prod_{< i j >} e^{K δ_{σ_{i} σ_{j}}}$

Jorge Schmitt 2022-11-06

In a constant pressure process, the change in internal energy is
$U = \frac{3}{2} n R T = \frac{3}{2} P (V 2 - V 1) .$
However in a constant volume, is the change in internal energy $U = \frac{3}{2} n R T = V (P 2 - P 1)$ ?

Jorge Schmitt 2022-11-04

What is the physical significance of Helmholtz Free Energy?

Adison Rogers 2022-11-04

Why is Gibbs free energy not used in Statistical Associating Fluid Theory (SAFT) Equation of State (EoS)?

Bayobusalue 2022-11-04

Why does the added heat have to be reversible in the formula for calculating entropy change?

Kenna Stanton 2022-11-03

I have two constant volume gas thermometers, one with an ideal gas $p v = R T$ and the other following the Van der Waals equation $(p + \frac{a}{v^{2}}) (v - b) = R T$ . They are calibrated using the freezing point and the boiling point of water. Will they show the same temperatures?\

Mariyah Bell 2022-11-01

A gas tank is divided into two parts by a stationary barrier. The tank is held at constant temperature and constant pressure. A small hole is pierced in the barrier, so that particles can move. Show that $μ_{1} = μ_{2}$

Cale Terrell 2022-10-31

Which law of thermodynamics best explains respiration?

Martin Hart 2022-10-31

$1.343 x 10^{7} J$ fan is used in a large room to provide for air circulation. Assuming a well insulated, sealed room, determine the internal energy increase after 1 hour of operation.

wasangagac4 2022-10-30

Is the amount of energy in the universe a finite quantity Joules?

Ryder Ferguson 2022-10-29

What is the point of the four different thermodynamic potentials?

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Thermal Physics

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