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Exam 4

Exam 4. Today last regular day Tomorrow (Tuesday) is the late day Your study guide is the homework!. Final Exam . All Finals week in the testing center Same format, same rules as midterms, but no free response - one page of notes

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Exam 4

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  1. Exam 4 • Today last regular day • Tomorrow (Tuesday) is the late day • Your study guide is the homework!

  2. Final Exam All Finals week in the testing center Same format, same rules as midterms, but no free response - one page of notes - bring a calculator, scratch paper, pencils, erasers, ruler - 16 multiple choice • Problems like problems on midterms • Problems from midterms with different numbers

  3. Course Evaluations • extra credit 20 point quiz

  4. Unit 1 Review Fluids— density Pascal’slaw (pressure vs. depth) Equation of continuity Buoyant force-Archamedes Bernoulli’s (pressure, velocity, depth)

  5. A block of wood floats in a bowl of water. On top of the block there is a lead weight attached. The block turns over so that the lead weight is under water still attached to the floating block. When this happens, the water level in the bowl (a) goes down. (b) remains unchanged. (c) goes up.

  6. A block of wood is glued to the bottom of a container. Water in the container completely covers the block. The glue dissolves and the block rises to the top where it floats. When this happens, the water level (a) goes up. (b) remains unchanged. (c) goes down.

  7. Discussion question: A glass is filled to the top with ice and water. When the ice melts, where is the water level? • Above the rim so it spills over. • At the rim—same place as before. • Below the rim

  8. Blood flows through a coronary artery that is partially blocked by deposits along the artery wall. Through which part of the artery is the flow speed largest? • The narrow part. • The wide part. • The speed is the same in both parts.

  9. Blood flows through a coronary artery that is partially blocked by deposits along the artery wall. Through which part of the artery is the pressure the lowest? • The narrow part. • The wide part. • The speed is the same in both parts.

  10. A tornado moves over a house and causes the windows to explode. They will explode (a) outward. (b) inward.

  11. Sound Waves— Transverse vs. longitudinal waves Frequency, period, wavelength Antinodes, nodes Doppler effect Pipes and strings—Resonances

  12. A sinusoidal wave propagates on a string. The tension in a string remains fixed, but the frequency is doubled. What happens to the wavelength? (a) The wavelength is halved. (b) The wavelength remains unchanged. (c) The wavelength is doubled.

  13. A flute is played with helium inside instead of air. The wavelength (inside the flute) of the fundamental note (a) decreases. (b) remains unchanged. (c) increases.

  14. Two strings, one thick and the other thin, areconnected to form one long string. A wavetravels along the string and passes the pointwhere the two strings are connected. Whichof the following does not changes at that point: • frequency • velocity • wavelength

  15. You hear a violinist playing a series of notes of decreasing wavelength on a particular string. As the wavelength decreases, the wave speed in the string • Decreases • Increases • Stays the same

  16. A string fastened at both ends has a length of 1.0 m. Two possible wavelengths for standing waves are • 4 m and 2 m • 4 m and .5 m • 2 m and .66 m • 3 m and .66 m • 3 m and 2 m • 3 m and .5 m • 2 m and .20 m

  17. Two tuning forks have frequencies 440Hz and 438Hz. When they are both struck, a listener hears the intensity vary in time (i.e. wa - wa - wa -...). What is the period of this intensity variation?

  18. A stationary observer hears a pitch from a source that moves towards him, the observed frequency will be ____________ the source frequency • Lower than • The same as • Higher than

  19. WHO ARE YOU? WHO IS THAT PERSON SITTING NEXT TO YOU?

  20. Unit 2 Review Ideal Gas—PV=nRT—Watch units W work done by gas vs. on gas Adiabatic, constant V, T and P Thermal equilibrium—Entropy

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