A. f = (k/m). B. f = (1/2)(m/k). C. f = (1/2)(k/m). D. f = (m/k). 18. Which of t
ID: 1662449 • Letter: A
Question
A. f = (k/m).
B. f = (1/2)(m/k).
C. f = (1/2)(k/m).
D. f = (m/k).
18. Which of the following is a definition of pressure?
A. Force per unit area.
B. Mass per unit volume.
C. Momentum per unit volume.
D. Energy per unit area.
E. Two of the above.
19. In hydrostatic equilibrium, the pressure on level surfaces equals
A. the mass per unit volume at that level.
B. the total mass above that level.
C. the total weight of material above a unit area of the surface.
D. the temperature times the density.
E. none of the above.
20. Weight differs from mass by a factor of
A. v (velocity).
B. g (acceleration of gravity).
C. F (force).
D. 2.
E. 1 (they are the same- just different units).
21. Which best describes the relationship between two systems in thermalequilibrium?
A. No net energy is exchanged.
B. The volumes are equal.
C. The masses are equal.
D. They have zero velocity.
22. The absolute temperature of an ideal gas is directly proportional to which ofthe following properties of the molecules of that gas?
A. The average speed.
B. The average momentum.
C. The average mass.
D. The average kinetic energy.
23. Which expression below is correct for the equation of state for an idealgas?
A. PV = nRT.
B. TV = nRP.
C. Q = mcT.
D. W = PV.
24. Which of the following best describes a substance in which the temperatureremains constant while at the same time it is experiencing an inward heat flow?
A. It is a gas.
B. It is a liquid.
C. It is a solid.
D. It is undergoing a change of phase.
25. Which expression below is correct for the first law of thermodynamics(conservation of energy)?
A. PV = nRT.
B. U = Q W.
C. Q = mcT.
D. W = PV.
26. We discussed two kinds of entropy. They were (also be prepared todefine each)
A. configurational and systemic.
B. configurational and thermodynamic.
C. systemic and thermodynamic.
D. electrostatic and systemic.
27. Which one of the following quantities is also at a maximum when an object insimple harmonic motion is at its maximum displacement?
A. velocity
B. acceleration
C. kinetic energy
D. frequency
28. Low amplitude pendulums, masses on springs, and vibrating oxygenmolecules are all examples of
A. circular motion.
B. simple harmonic motion.
C. forced oscillators.
D. they have nothing in common.
29. If a wave pulse is reflected from a free boundary, which of the followingchoices best describes what happens to the reflected pulse?
A. It becomes inverted.
B. It remains upright.
C. It is halved in amplitude.
D. It is doubled in amplitude.
30. In transverse waves, particle motion
A. is parallel to the wave travel direction.
B. is perpendicular to the wave travel direction.
C. oscillates between parallel and perpendicular to the wave motion.
D. is stationary while the wave moves.
31. The equation which relates properties of a wave is
A. v = f*.
B. f = v*.
C. = f*v.
D. = 2*f.
32. What plays the role of a "spring" to cause the wave oscillationsin sound?
A. gravity
B. density
C. pressure
D. no forces are involved.
33. If a conductor is in electrostatic equilibrium near an electricalcharge:
A. the total charge on the conductor must be zero.
B. the electric field inside the conductor must be zero.
C. any charges on the conductor must be uniformly distributed.
D. the sum of all forces between the conductor and the charge must be zero.
34. The work needed to move a charge into the direction of an electricfield is
A. field strength times charge value times acceleration.
B. field strength times charge value times distance.
C. field strength times mass times acceleration.
D. field strength times mass times distance.
35. Electric field strength and electric force differ by afactor of
A. F (force).
B. m (mass).
C. q (charge).
D. 2.
E. 1 (they are the same- just different units).
36. The unit for rate of energy transformation, the Watt, in an electriccircuit is dimensionally equivalent to which of the following?
A. Volt / sec
B. Ampere * Ohm
C. Volt * Ampere
D. Volt / Ohm
37. Assume that a uniform magnetic field is directed into this page. If an electronis released with an initial velocity directed from the bottom edge to the top edgeof the page, which of the following describes the direction of the resultant forceacting on the electron? (sound familiar? :-))
A. out of the page
B. to the right
C. to the left
D. into the page
38. The force exerted on a current carrying wire located in an external magneticfield is directly proportional to which of the following?
A. current value times field strength
B. field strength alone
C. field strength divided by current value
D. None of the above are valid
39. The magnetic field produced by a current carrying wire
A. is parallel to the current.
B. is anti-parallel to the current.
C. circles around the wire clockwise as seen parallel to the current.
D. circles around the wire counter-clockwise as seen parallel to the current.
40. Electricity may be generated by rotating a loop of wire between the poles of amagnet. The induced current is greatest when:
A. the plane of the loop is parallel to the magnetic field.
B. the plane of the loop is perpendicular to the magnetic field.
C. the magnetic flux through the loop is a maximum.
D. the plane of the loop makes an angle of 45 deg with the magnetic field.
41. The electric field, E, in an electromagnetic wave is oriented inwhat direction with respect to its associated magnetic field, B?
A. E is parallel to B.
B. E is anti-parallel to B.
C. E is perpendicular to B.
D. E is at a 45 deg angle to B.
42. Approximately what is the shortest (or longest) wavelength of EMradiation visible to the normal human eye?
A. 200 nm
B. 400 nm
C. 500 nm
D. 700 nm
43. Which of these phenomena is not a variety of electromagneticradiation?
A. Microwaves
B. Light
C. X-rays
D. Radio
E. Cosmic rays
44. What is the speed of light in a vaccuum? (you better remember it! :-))
A. 300,000 km/sec
B. 186,000 mi/sec
C. 1 light year per year
D. all of the above.
45. The wave-particle duality of light means that, in on
Explanation / Answer
41. C
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.