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Chapter 20: The Micro/Macro Connection

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Pages: 548 - 569

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76 Questions for Chapter 20: The Micro/Macro Connection

  1. Solids and liquids resist being compressed. They are not totally incompressible, but it takes large forces to compress them even slightly. If it is true that matter consists of atoms, what can you infer about the microscopic nature of solids and liquids from their incompressibility?

    Found on Page 566
  2. The number density of an ideal gas at STP is called the Loschmidt number. Calculate the Loschmidt number.

    Found on Page 566
  3. FIGURE EX20.10 is a histogram showing the speeds of the molecules in a very small gas. What are

    Found on Page 567
  4. The number density in a container of neon gas is 5.00×1025m-3. The atoms are moving with an rms speed of 660m/s. What

    Found on Page 567
  5. At 100°C the rms speed of nitrogen molecules is 576m/s. Nitrogen at 100°C and a pressure of 2.0atm is held in a container with a 10cm×10cm square wall. Estimate the rate of molecular collisions (collisions/s) on this

    Found on Page 567
  6. A cylinder contains gas at a pressure of 2.0atmand a number density of4.2×1025m-3. The rms speed of the atoms is 660m/s. Identify the

    Found on Page 567
  7. A gas consists of a mixture of neon and argon. The rmsspeed of the neon atoms is 400m/s. What is the rms speed of the argon atoms?

    Found on Page 567
  8. What are the rms speeds of (a)argon atoms and (b) hydrogen molecules at 800°C ?

    Found on Page 567
  9. 1.5m/sis a typical walking speed. At what temperature (in°C)would nitrogen molecules have an rms speed of1.5m/s

    Found on Page 567
  10. At what temperature (in°C)do hydrogen molecules have the same rms speed as nitrogen molecules at 100°C

    Found on Page 567

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