43. How does the internal energy of an ideal gas as it follows path along the isotherm labeledin figure?

44. Latent heat is

45. Adiabatic process is

46. A diatomic gas molecule has ... degrees of freedom

47. Energy may be transferred by

48. The molar specific heat of a gas is measured at constant volume and found to be 11R/2. The gas is most likely to be

49. Parallel wires carrying currents I₁ and I₂ respectively

50. What are the opposite ends of a magnet called?

51. How are electrical charges and magnetic poles similar?

52. How can you show that electricity creates a magnetic field?

53. How can you make an electromagnet?

54. What happens when you turn off the current in an electromagnet?

55. How can you create electricity with a magnet?

56. Can you create electricity with a magnet?

57. The geomagnetic field

58. A material that can be permanently magnetized is generally said to be

59. The magnetic flux around a straight current-carrying wire

60. The gauss is a unit of

61. If a wire coil has 10 turns and carries 500 mA of current, what is the magnetomotive force in ampere-turns?

62. Which of the following is not generally observed in a geomagnetic storm?

63. A device that reverses magnetic field polarity to keep a dc motor rotating is

64. When the speed at which a conductor is moved through a magnetic field is increased, the induced voltage

65. The induced voltage across a coil with 250 turns that is located in a magnetic field that is changing at a rate of 8 Wb/s is

66. For a given wirewound core, an increase in current through the coil

67. If the cross-sectional area of a magnetic field increases, but the flux remains the same, the flux density

68. When the current through the coil of an electromagnet reverses,

69. What is the reluctance of a material that has a length of 0.07 m, a cross-sectional area of 0.014 m², and a permeability of 4,500Wb/At × m?

70. A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will

71. What is the flux density when the flux is 5.5 Wb and the cross-sectional area is 6 × 10^–3 m²?

72. If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage

73. What is the flux density in a magnetic field in which the flux in 0.1 m² is 600 µWb?

74. What is the charge carrier in semiconductors?

75. p –type semiconductor means

76. n –type semiconductor means

77. Show the SI unit of magnetic field B:

78. Basic source of magnetism ______________.

79. Show the SI unit of magnetic flux:

80. Which of the following statements is correct?

81. Three particles travel through a region of space where the magnetic field is out of the page, as shown in Figure. The electric charge of each of the three particles is, respectively,

82. What is the inductive reactance of a 20-mH inductor at a frequency of 60 Hz?

83. The figure shows a simple AC circuit composed of a capacitor connected across the terminals of an ac generator. If the frequency of the generator is doubled, what happens to the capacitive reactance of the capacitor?

84. An electron moves in the plane of this paper toward the top of the page. A magnetic field is also in the plane of the page and directed toward the right. The direction of the magnetic force on the electron is

85. A wire suspended vertically between the poles of a magnet. The setup shown in the figure as seen looking at the south pole of the magnet, so that the magnetic field (blue crosses) is directed into the page. If current is downward, show the suitable deflection of wire:

86. A ball is thrown upward. While the ball is in free fall, does its acceleration

87. After a ball is thrown upward and is in the air, its speed in all path

88. If vector b is added to vector a, which two of the following choices must be true in order for the resultant vector to be equal to zero?

89. A car moves along y-axes. In the figure, velocity of the car as a function of time is shown in three parts (I, II, III). Which statement is ALWAYS true?

90. What is the cross product of two vectors A and B, if the angle between them is 30 degree, and magnitudes are |A|=4, |B|=2

91. When a box rests on the floor, it is acted upon by the gravitational and the _________________ force.

92. Motion is produced by

93. Force is that agent which produces or tends to produce the __________.

94. A force of 3N acts perpendicularly to a force of 4N. Their resultant has magnitude of ______

95. In inelastic collision between the two bodies __________.

96. Work done by a grass cutter is maximum when he pulls it __________.

97. A man does the work if he ___________.

98. In elastic collision between the two bodies __________.

99. When the constant force and displacement are parallel to each other, then work is __________.

100. In rotational motion, the quantity, which plays the same role as the inertial mass in linear motion, is called ___________.

101. Pairs of forces of equal magnitude act on identical cylinders as shown in the figures. In which example is the cylinder in translational and rotational equilibrium?

102. Four identical particles, each with mass m, are arranged in thex,yplane as shown. They are connected by light sticks to form a rigid body. Ifm= 2.0.

kg and a = 1.0 m, the rotational inertia of this array about the y-axis is: