Adisk of radius 2.6 cm has a surface charge density of 6.0 µc/m2 on its upper face. what is the magnitude of the electric field produced by the disk at a point on its central axis at distance z = 18 cm from the disk?

where is the

answer: from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion—that we here highly resolve that these dead shall not have died in vain, that this nation under god shall have a new birth of freedom, and that government of the people

explanation:

the answer is a because the astrophel does more and sidney goes to the astrophel more than stella.

answer is b,

"the tracer looks harmless in flight, but the pilot’s bitten lips and white knuckles suggest how dangerous it can be."

it was correct.