Molar Specific Heat: Difference Between CV & CP

AI Thread Summary
The discussion focuses on the distinction between molar specific heat at constant volume (CV) and at constant pressure (CP). CV refers to the amount of heat required to raise the temperature of one mole of a substance at constant volume, while CP is the heat required at constant pressure. The First Law of Thermodynamics is relevant, as it relates heat (Q) and work (W) in thermodynamic processes. The conversation emphasizes the importance of defining both specific heats for clarity. Ultimately, the original poster found the answer and encouraged sharing insights to assist others with similar questions.
Charanjit
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1. Homework Statement

What si the difference between the molar specific heat at constant volume and at constant pressure?



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The Attempt at a Solution

 
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Please show the work you've done on the problem so far, then you'll likely get suggestions for continuing.
 
This is a qualitative question not quantitative. But for some equations that do go with this are the following:
Delta(E)=Q-W --First law of Thermodynamics
 
It would be a good idea to define both: the specific heat at constant volume, and the specific heat at constant pressure.
 
Nevermind, I found the answer.
 
Would you be willing to share what you learned to help others with the same question?
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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Thread 'Struggle to understand the concept of the question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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