Two cars A and B are moving along straight road in the same direction with velocities of 25 km/hr and 40 km/hr respectively. Find the velocity of car B relative to car A

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.

their crystal patterns have been disrupted by stress

c) up is the direction the magnetic force is acting on the charge.