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It's the physical property that indicates the degree/intensity of heat present in a substance or an object. It can be expressed and measured according to various scales.

for air temperature calculation will be, $$h_{air}A(37-T_{air})=h_{water}A(37-11)$$ Area will be canceled. The air temperature will be, $$T_{air}=37-\frac{h_{water}}{h_{air}}*26$$ For 10m/s water …
answered Apr 3 '17 by user115350
heat capacity). You don't have to be a physicist to do this. The differential equation is close. The physics behind the equations is that the building temperature change is due to the net heat energy … it receives. The net energy is the energy from central heating system minus the heat loss (plus some heat from Solar radiation etc.). The outside temperature varies during a day. For the simplicity …
answered Feb 22 '18 by user115350
~kg$ heat capacity of water is 4.2kJ/kg-K calculate how much heat required for the water to reach room temperature. $$\bigtriangleup Q=m c (27-10)= 34.3kJ$$ Assuming water can transfer heat fast … , we get the water temperature change rate, $$mc\frac{dT_{water}}{dt}=\dot Q$$ Use $10W/m^2-K$ for air natural convection heat transfer, we get the heat transfer rate, $$\dot Q=hA(T_{room}-T_{water …
answered Jun 22 '16 by user115350
Though it is not explicitly written for paramagnet, you can refer equation 3.10 on page 91 where internal energy and temperature are related for T and refer equation 3.15 on page 92 for specific heat. And problem 3.24 tells you how to do calculation as well. …
answered Aug 9 '16 by user115350
One example of increasing entropy without increasing temperature is phase transformation of water. From saturated liquid liquid to saturated vapor point, heat is added to the system but temperature remains constant. The entropy of the system increases. …
answered Oct 14 '17 by user115350
Specific enthalpy is $$h=u+pv$$ We know u and v are a function of temperature. So h is a function of both temperature and pressure. You can find it in water vapor table. If table does not have specific enthalpy at the temperature and pressure, you can get it by interpolation. …
answered Apr 2 '18 by user115350
Assuming there is only one particle in the container and you can wisely move the piston without colliding with the particle, you then claim that there is no work done. But don't miss the other side. …
answered Feb 25 '18 by user115350
1 eV is not equivalent to 11,600K, rather it is equivalent to 1.602e-19J. Both eV and J are unit of energy. K is unit of temperature. Sometimes, you can see people using 11,600K to describe eV … . This is because people are using Boltzmann constant k = 1.381e-23 J/K, which links the temperature to molecular kinetic energy. The conversion is numerical and does not necessary have physics essence in …
answered Jun 9 '16 by user115350
Your hand is not burned because its temperature is not at 200degC. If your hand stays there for a long time, it will be burned (i.e. the temperature will be high). So it takes time to heat up your …
answered Jan 28 '17 by user115350
Your trip with a gas guzzling car contributes $CO_2$ to atmosphere. $CO_2$ has greenhouse effect. The thing is that we need greenhouse gas to maintain the temperature of the earth temperature. In … ice age, where greenhouse gas was little, the global temperature was extremely low. By the end of ice age when the greenhouse gas increased, the global temperate rose and there was flooding. We also …
answered Feb 24 '18 by user115350
You need to put things in order. Temperature is first defined in text book (i.e. a thermostat with 0 degC for ice-water blend, 100 degC for boiling water and linear scale). By testing, people noticed … that T is proportional to P for gas. This can be done by heating the gas of constant volume and measuring both T and P. Temperature is independent (not derived) to this ideal gas relationship. …
answered Aug 26 '16 by user115350
The thermal conductivity is calculated using, by definition, the following equation. $$\frac{W}{\triangle T \cdot L}$$ The heat transfer rate is the product of heat flux and area. You didn't provide …
answered Aug 28 '17 by user115350
My hypothesis is this. When the Sun heats up the wax, the wax gets soften or melt. The surface tension between the glass wall and the wax then drag the wax up the wall.
answered May 19 '16 by user115350
first of all, human body temperature is maintained by the body. If it is lower, body will burn some fat to keep it up. If it is high, the body will do something like sweating. Wearing a wet cloth … air (evaporation) 3. radiation heat to the water 4. latent heat due to mass transportation 5. heat transfer between the body and the water (depends on how do you wear it) 6. temperature change of the water in cloth. …
answered Jun 24 '16 by user115350
The evaporation rate can be calculated but with a quite complex diffusion differential equation. @Samuel is correct that you cannot assume a uniform distribution of humidity. There is water density …
answered May 4 '17 by user115350

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