One-tenth kg of a gas in a piston-cylinder assembly undergoes a Carnot power cycle for which the isothermal expansion occurs at 800K. The change in specific entropy of the gas during the isothermal compression, which occurs at 400K, is -25 kJ/kg-K. Determinea)The net work developed per cycle, in kJ;( 1000 kJ)b)The thermal efficiency

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.

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

momentum of soft ball three times less than baskey ball