An electron is to be released from rest on the central axis of a uniformly charged disk of radius R. The surface charge density on the disk is +4.00 μC/m^2 and ε0= 8.85 x 10^–12 F/m. What is the magnitude of the electron’s initial acceleration if released at distances of a. R from the center of the disk?
b. R/100 from the center of the disk?
c. R/1000 from the center of the disk?
d. Why does the acceleration increase only slightly as the release point is moved closer to the disk?

Explanation:

From the question we are told that

The surface charge density on the disk is

a)Generally the electric field in this situation is given as  is mathematically given as

Generally the Force of release of the electron  is mathematically given as

b)Generally the electric field in R/100 from the center of the disk is given as  is mathematically given as

Generally

Generally the Force of release of the electron  is mathematically given as

c)Generally the electric field in R/1000 from the center of the disk is given as  is mathematically given as

Generally the Force of release of the electron  is mathematically given as

chemical properties of thing

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.