Question

A system absorb 520 J of heat and perform work ( expansion ) of 10 J calculate . Change in the enternal energy . ​

Answer 1

Given:

• Heat absorb = 50 J
• Work done = 10 J

To find:

• Change in the internal energy or △U

Solution:

• A system absorb 520 J of heat and the work performed by the system is 10 J.

• According to the first law of thermodynamics, the formula is for change in the internal energy is △U= Q−W

Where,

• Q stands for the heat that is absorbed

• W stands for the work done

Thus,

• △U= Q−W

• △U= 520 J - 10 J
• △U= 510 J
• Therefore the Change in the internal energy is 510 joules.