A double loop of wire (making 2 turns) is in the x-y plane centered at the origin. A uniform magnetic field is increasing at a constant rate in the negative z direction. In which direction is the induced magnetic field in the loop?
a. There is no induced field because of the double loop.
b. There is no induced field because the rate of change of the magnetic field is constant.
c. in the negative z direction
d. in the positive z direction
D
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a. the masses b. the sizes c. the masses and sizes d. neither masses nor sizes
You are standing in a moving bus, facing forward, and you suddenly fall forward as the bus comes to an immediate stop. The force acting on you that causes you to fall forward is
A) the force of gravity. B) the normal force due to your contact with the floor of the bus. C) the force due to static friction between you and the floor of the bus. D) the force due to kinetic friction between you and the floor of the bus. E) No forces were acting on you to cause you to fall.
Which phase of the moon do you expect to see rising at dawn?
A. third quarter B. first quarter C. full moon D. waning crescent
An RLC series circuit has R = 100 ohms, C = 25 ?F, and L = 0.16 H. For what angular frequency of an AC voltage is the current flow maximum?
A. 251 rad/s B. 500 rad/s C. 757 rad/s D. 884 rad/s E. 79.6 rad/s