Question Detail

PHY 101 PHY 101 Past Questions Objective Question
Take CBT

Question

The First Law of Thermodynamics in mathematical form is
Options
A ΔEint = Q + W
B ΔEint = W - Q
C ΔEint = -W
D ΔEint = Q - W
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

The First Law of Thermodynamics states that the change in internal energy of a system equals the heat added to the system minus the work done by the system: ΔEint = Q - W. This is a statement of conservation of energy. Some textbooks use different sign conventions, but this is the standard form in most physics texts.

Hint

Energy conservation: change in internal energy = heat in - work out.

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 815 of 1250
Previous Course Details Next