The force between two unlike magnetic poles
A. increases as the separation distance between them increases in a linear fashion
B. increases as the separation distance increases, but proportional to the square of the distance
C. decreases as the separation distance between them increases, in a linear fashion
D. decreases as the separation distance between them increases, but in proportion to the square of the distance.
D. decreases as the separation distance between them increases, but in proportion to the square of the distance.
You might also like to view...
What is a circumpolar star?
A) a star that is close to the south celestial pole B) a star that is visible from the Arctic or Antarctic circles C) a star that is close to the north celestial pole D) a star that makes a daily circle around the celestial sphere E) a star that always remains above your horizon
Two moons orbit a planet in circular orbits. Moon A has orbital radius R, and moon B has orbital radius 4R. Moon A takes 20 days to complete one orbit. How long does it take moon B to complete an orbit?
A) 20 days B) 80 days C) 160 days D) 320 days E) 5 days
Kepler's Laws: The average distance from Earth to the sun is defined as one astronomical unit (AU). If an asteroid orbits the sun in 1/3 of a year in a circular orbit, the asteroid's distance from the sun is closest to
A. 0.19 AU. B. 0.48 AU. C. 2.1 AU. D. 5.2 AU. E. 0.33 AU.
A proton moving at 3 × 10^4 m/s is projected at an angle of 30° above a horizontal plane. If an electric field of 400 N/C is directed downwards, how long does it take the proton to return to the horizontal plane? (HINT: Ignore gravity.) [mProton = 1.67 × 10^-27 kg, qProton = +1.6 × 10^-19 C.]