A 5.0-nC point charge is embedded at the center of a nonconducting sphere (radius = 2.0 cm) which has a charge of ?8.0 nC distributed uniformly throughout its volume. What is the magnitude of the electric field at a point that is 1.0 cm from the center of the sphere?
a. 1.8 × 10^5 N/C
b. 9.0 × 10^4 N/C
c. 3.6 × 10^5 N/C
d. 2.7 × 10^5 N/C
e. 7.2 × 10^5 N/C
c
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A. 19,770 B. 26,660 C. 30,230 D. 36,760 E. 39,600
Imagine we've discovered a planet orbiting another star at an average distance of 1 AU with an orbital period of 6 months. The planet has a moon that orbits the planet at the same distance as our Moon, but it takes 2 months to complete an orbit. What can we infer about this planet?
A) It is more massive than Earth. B) It is less massive than Earth. C) It has the same mass as Earth. D) We cannot answer the question without knowing the mass of the star. E) We cannot answer the question without knowing the mass of the moon.
Earth's magnetic axis is the same as its rotation axis.
Answer the following statement true (T) or false (F)
A planet has the orbit shown below. Use the 8 labeled points to answer all questions