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In thermodynamics, what does the first law state?

Practice Questions

Q1
In thermodynamics, what does the first law state?
  1. Energy cannot be created or destroyed
  2. Entropy always increases
  3. Pressure and volume are inversely related
  4. Heat flows from cold to hot

Questions & Step-by-Step Solutions

In thermodynamics, what does the first law state?
  • Step 1: Understand that energy is a property that can exist in different forms, like heat, light, or mechanical energy.
  • Step 2: Recognize that the first law of thermodynamics is about the conservation of energy.
  • Step 3: Learn that this law states energy cannot be created from nothing or completely disappear.
  • Step 4: Realize that energy can only change from one form to another, like turning chemical energy in food into kinetic energy when you move.
  • Step 5: Conclude that the total amount of energy in a closed system remains constant, even though it may change forms.
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