a gas is enclosed in a container fitted with a piston of cross-sectional area 0.10m2. The pressure of gas is maintained at 8000N/m2. When heat is slowly transferred the piston is pushed up through a distance of 4.0cm.If 42J heat is transferred to the system during the expansion what is the change in internal energy?
Explain pleasee?
Ans = 10J
Answers
Explanation:
force = pressure*area = 8000*0.1= 800 N
work = force*displacement
= 800*0.04 = 32 J
as per 1st law of thermodynamics
change in internal energy
= heat - work = 42 - 32 = 10 J
Answer:
Ans = 10J
Explanation:
The internal energy is a state variable that exists in a thermodynamic system at equilibrium (E). The difference in heat transfer into and work performed by two systems is equal to the change in internal energy between the two systems.
The universe's energy is constant, according to the first law of thermodynamics. It cannot be created or destroyed, but it can be exchanged between the system and its surroundings. The law essentially deals with how work and heat transport cause changes in energy states. It redefines the idea of energy conservation.
First Law of Thermodynamics
According to the First Law of Thermodynamics, heat is a type of energy, and as a result, thermodynamic processes are governed by the idea of energy conservation. Heat energy cannot be created or destroyed, hence this means. But it can be moved from one place to another and changed into and out of various types of energy.
force is calculated as follows: 8000*0.1 = 800 N
Force + Displacement Equals Work
= 800*0.04 = 32 J
following the first law of thermodynamics
internal energy shift
= labour – heat = 42 – 32 = 10 J
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