Question

The work is done by a system is 8 joule when 40 joule heat is supplied to it calculate the increase in internal energy of the system

Answer 1

first law of thermodynamics

∆U = q + W

• ∆U = 40 + (-8)
• {work done by system so negative}

∆U = 32 J

Answer 2

Answer:

Concept:

The product of an object's displacement and the component of the applied force that is in the plane of the object's displacement is the work done by a force. After that, the broadest meaning of work can be stated as follows: The line integral of a force's scalar tangential element along the path of its beginning of the implementation is its work. If the force changes (for example, when compressing a spring), we must apply calculus to calculate the work done.

Given:

Determine the change in internal energy of a system that does 8 joule of work when 40 joule of heat is delivered to it.

Find:

calculate the growth in the system's internal energy

Answer:

=> The work W is directly proportional to the force f twice the length d, or W = fd, to express this concept numerically. If the pressure is applied at an angle to the displacement, the work done is W = fd cos. The product of an object's displacement and the component of the applied force that is in the plane of the object's displacement is the work done by a force.

$q=40$  $J$

$w=8$   $J$

Δ $E$ $=q+w$

       $=40-8$

       $=32$  $J$

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