Hich of the following would be an example of nuclear fusion? a bombarding uranium nuclei with beta particles to produce two lighter atomic nuclei. b colliding hydrogen atoms to produce heavier helium atoms. c an unstable nucleus decays over a period of time. d cobalt releasing gamma rays during decay to be used for a medical imaging.

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

brainliest

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.