Which of the followijg is an example of kinetic energy A. A boy resting on a park bench
B. A book sitting on a shelf
C. A rubber band stretched as far as it can go
D. A swing moving back and forth​

D

Explanation:

D. A swing moving back and forth

Explanation:

The answer to ur question is option D) A swing moving back n forth bcos kinetic energy is energy that is due to motioneven tho option C) states that the rubberband is stretched, it is still considered a potential enrgy bcos it is in a position that wud change from potential to kinetic energysp the correct ans iz option D)

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.

number of electrons for neutral cl