The primary source of the energy radiated by a star, such as the sun, is
A) fusion reactions in which helium is fused to form iron.
B) fusion reactions in which hydrogen is fused to form helium.
C) beta decay.
D) fission reactions involving uranium.
E) alpha decay.
B
Physics & Space Science
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The 5d subshell can contain how many electrons when filled?
A) 21 B) 10 C) 7 D) 4 E) 14
Physics & Space Science
The blue light from the sky has been polarized by:
a. selective absorption. b. reflection. c. double refraction. d. scattering.
Physics & Space Science
The elliptical galaxies have compositions and shapes like the ________ of the Milky Way
Fill in the blank(s) with correct word
Physics & Space Science
At what rate is thermal energy generated in the 20-? resistor when ? = 20 V?
a.
6.5 W
b.
1.6 W
c.
15 W
d.
26 W
e.
5.7 W
Physics & Space Science