Imagine that in a certain region of space, an electric field is uniform in magnitude and direction. What can we conclude about the magnetic field in that region?
A. 
= 0.
B. must be uniform in space.
C. must be constant in time.
D. must be both uniform in space and constant in time.
E. There are no restrictions on .
F. There are other restrictions on (specify).
C. must be constant in time.
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Faraday's Law: As shown in the figure, a large round loop of 269 turns and radius 67.0 cm carries a current of I = 78.0 A. A small square loop of 31.0 turns and 1.00 cm on a side is placed at the center of the large loop. If the current in the large loop drops to 0.00 A in 0.0470 s, find the induced emf in the small loop. The square loop is small enough that you can assume that the magnetic field in its region is uniform and equal to the magnetic field at the center of the round loop. (?0 = 4? × 10-7 T ? m/A)
Fill in the blank(s) with the appropriate word(s).
The horizontal and vertical components of the initial velocity of a football are 16 m/s and 20 m/s respectively. How long does it take for the football to rise to the highest point of its trajectory?
A) 1.0 s B) 2.0 s C) 3.0 s D) 4.0 s E) 5.0 s
If a person is nearsighted the corrective lens will
a. take an object at the far point and form an image at 25 cm. b. take an object at 25 cm and form an image at the far point. c. take an object at infinity and form an image at the far point. d. take an object at infinity and form an image at 25 cm.
Which of the following is the type of particle that almost never interacts with normal matter?
A) neutrons B) electrons C) neutrinos D) protons