On the H-R diagram, the Sun lies
A) about the middle of the main sequence.
B) at the top left.
C) at the bottom right.
D) at the bottom left.
E) at the top right.
A
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Coulomb's Law: Two tiny particles carrying like charges of the same magnitude are 1.0 mm apart. If the electric force on one of them is 5.0 N, what is the magnitude of the charge on each of these particles?(k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 2.4 × 10-2 C B. 2.4 × 10-8 C C. 4.5 × 104 C D. 2.4 × 10-5 C
The order of evolutionary stages of a star like the Sun would be Main Sequence, giant, planetary nebula, and finally:
A) hypernova. B) neutron star. C) white dwarf. D) nova. E) black hole.
When the Sun is located near one of the horizons, an observer looking at the sky directly overhead will view partially polarized light. This effect is due to which of the following processes?
a. reflection b. double refraction c. selective absorption d. scattering
Alfred Wegener postulated that the continents were once part of a single supercontinent that he called ______________
Fill in the blank(s) with correct word