First Law of Thermodynamics Video Lessons

Video Thumbnail

Concept

Problem: As part of your job at the patent office, you are asked to evaluate the six designs shown in the figure for innovative new heat engines. (Figure 1)Part AWhich of the designs violate(s) the first law of thermodynamics?Give the letter(s) of the design(s) in alphabetical order, without commas or spaces (e.g., ACD).

FREE Expert Solution

The first law of Thermodynamics is expressed as:

U=Q+W, where ΔU is the change in internal energy, Q is the heat transfer, and W is the amount of work done.

There must be a conservation of energy.

That is, the heat input must be the same as heat out + work done.

For A, 600 + 400 = 1000 (Obeys)

79% (500 ratings)
View Complete Written Solution
Problem Details

As part of your job at the patent office, you are asked to evaluate the six designs shown in the figure for innovative new heat engines. (Figure 1)

Part A

Which of the designs violate(s) the first law of thermodynamics?

Give the letter(s) of the design(s) in alphabetical order, without commas or spaces (e.g., ACD).

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the First Law of Thermodynamics concept. You can view video lessons to learn First Law of Thermodynamics. Or if you need more First Law of Thermodynamics practice, you can also practice First Law of Thermodynamics practice problems.