Wednesday, April 1, 2015

Week 3 day 2

Today, we are still on thermodynamics.
In the picture above, it's a device that transfer thermal energy into electrical energy. When the two side metal touches two reservoir that has a difference in temperature, the middle plate will spin.

Through this device, we can measure the eletricity generated through this device by the difference in temperature.

Then we got into some heat capacity. Cp=Cv+R. while this is hold true, Cv changes based on the type of gas. For monotomic gases, Cv=3/2R. For diatomic gases, Cv=5/2R. while R is a constant that equals 8.314.


These two pictures are from Work formula for adiabatic process meaning heat is held constant.

then we did this cycle. we could calculate the work and change in internal energy, then we can calculate heat.

This is otto cycle model.

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