Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. Half way between the two plates the electric field has magnitude E
If the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates? A) 4E
B) 2E
C) E
D) 0
E) E/2
C
You might also like to view...
What is the main sequence?
A. a region of cool, luminous stars in the upper right corner of the H-R diagram B. a region of hot dim stars in the lower left corner of the H-R diagram C. the order in which spectral types are listed D. an approximately straight line on the H-R diagram along which 90% of stars lay
Which of the following statements about ozone (in Earth's stratosphere) is not true?
A) The presence of ozone was crucial to the origin of life. B) If the ozone layer is depleted, we can expect the rate of mutations in land-based life-forms to increase significantly. C) Ozone absorbs ultraviolet light from the Sun. D) The ozone hole occurring each spring over Antarctica appears to be caused by human-made CFCs.
The first Jovian moons were discovered by
A) Galileo B) Tycho C) Huygens D) Cassini
How do stars on the main sequence obtain their energy?
A) from chemical reactions B) from gravitational contraction C) by converting hydrogen to helium in their cores D) by converting helium to carbon, nitrogen, and oxygen E) from nuclear fission