A proton, moving west, enters a magnetic field of a certain strength. Because of this magnetic field the proton curves upward. What is the direction of this magnetic field?
A) towards the west
B) towards the east
C) towards the south
D) towards the north
E) downward
C
You might also like to view...
A magnifying glass has a convex lens of focal length 15 cm. At what distance from a postage stamp should you hold this lens to get a magnification of +2.0?
How would you describe the size of the following object?
a blood cell A) microscopic B) macroscopic C) submicroscopic D) all of the above E) none of the above
A person standing in the street is unaware of a bird dropping that is falling from a point directly above him with increasing velocity. If the dropping were producing sound of a fixed frequency, as it approaches the person would hear the sound
a. drop in frequency. b. stay at the same frequency. c. increase in frequency. d. decrease in loudness. e. stay at the same loudness.
When white light disperses as it passes through a prism, which of the following colors moves at the highest speed in the prism?
a. yellow c. blue b. red d. green