Aman with a mass of 70 kg walks up a flight of stairs that is 5 m tall. another man with a mass of 80 kg walks up the same flight of stairs. which one has more power?

a) the 70 kg man because he has less mass
b) the 80 kg man because he has more mass
c) the power generated by each is the same
d) power cannot be determined without the time taken to claim the stairs

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.