The numbers of sunspots and their activity peak about every
A) 36 days.
B) six months.
C) year.
D) eleven years.
E) 76 years.
D
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A negatively-charged particle moves across a constant uniform magnetic field that is perpendicular to the velocity of the particle. The magnetic force on this particle
A) is in the same direction as the particle's velocity. B) causes the particle to slow down. C) causes the particle to speed up. D) is opposite the direction of the particle's velocity. E) causes the particle to accelerate.
Name five different types of radiation detectors
What will be an ideal response?
Consider the fictional case of the incredible shrinking woman. If a fictional shrinking woman shrinks to 0.1 her original height, her total skin area shrinks to
A) 0.1 times its original value. B) 0.01 times its original value. C) 0.001 times its original value. D) 0.0001 times its original value. E) none of the above
If a = 60 cm, b = 80 cm, Q = ?4.0 nC, and q = 1.5 nC, what is the magnitude of the electric field at point P?
A. 68 N/C B. 72 N/C C. 77 N/C D. 82 N/C E. 120 N/C