A solid nonconducting sphere (radius = 12 cm) has a charge of uniform density (30 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the center of the sphere
a. 22 N/C
b. 49 N/C
c. 31 N/C
d. 87 N/C
e. 26 N/C
d
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By tradition, any planet in the sunset sky is called a(n) _____
A) exoplanet B) evening star C) pulsar planet D) morning star
Why is Mars red?
A) It is made primarily of the red rock known as reddite. B) Its surface rocks were rusted by oxygen. C) Its atmosphere scatters blue light more effectively than red light. D) Its surface is made of ices that absorb blue light. E) Its surface is made of ices that absorb red light.
Compared to the average surface temperature on the surface of the Earth, the average surface temperature on the surface of Mars is
A) about the same B) much lower C) just slightly lower D) much higher
In 400 B.C., a Greek named ______________ championed the idea that if matter were repeatedly cut into smaller divisions, eventually an indivisible particle would be reached
Fill in the blank(s) with correct word