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First law of thermodynamics
ΔU = Q − W
Where: ΔU = First law of thermodynamics, Q = heat (J) / charge (C), W = work (J) / weight (N)
Solved example
Given: Q = 7, W = 5
Find: Delta_U (First law of thermodynamics)
- Formula: ΔU = Q - W
- Substitute the values: ΔU = -5 + 7
- Result: ΔU = 2
Answer: Delta_U = 2
Calculator
How to calculate First law of thermodynamics
- Write down the formula: ΔU = Q − W.
- Note the known values (Q, W).
- Substitute them and simplify to find Delta_U.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for First law of thermodynamics?
The formula is ΔU = Q − W, where ΔU = First law of thermodynamics, Q = heat (J) / charge (C), W = work (J) / weight (N).
What is First law of thermodynamics when Q = 7, W = 5?
Delta_U = 2. Substitute the values into ΔU = Q − W and simplify.
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