Three charges are located along x-axis with first +5c charge at origin, second -1c charge 2m to the right of orgin and the third +2c charge 3m to the right of orgin. a) what is the magnitude and direction of force exerted by the first charge on the second charge?
b) what is the magnitude and direction of force exerted by the third charge on the second charge?
c) what is the net force on the second charge?

Explanation:

a ) Force on the 2 nd  charge by first charge

= k q₁ x q₂ / d²

= 9 x 10⁹ x 5 x 1 / 2² = 11.25 x 10⁹ N  it will be attractive and towards negative  x direction

b ) Similarly, force on 2 nd charge by 3 rd charge

= 9 x 10⁹ x 2 x 1 / 1² = 18 x 10⁹ .

it will act towards + ve x- direction .

c) Net force = 18 x 10⁹ - 11. 25 x 10⁹ = 6.75  x 10⁹ N. It will act towards + ve x-direction.

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.

power out to power in less than 100%