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

Physics & Space Science

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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

Physics & Space Science

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

Physics & Space Science

Name five different types of radiation detectors

What will be an ideal response?

Physics & Space Science

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.

Physics & Space Science