Acube of wood is floating on water. a cube of iron is totally submerged in water. the cubes are equal in volume. which cube has the greater buoyant force acting on it? a. the buoyant force cannot be determined without additional information. b. the cube of iron has the greater buoyant force acting on it. c. the cube of wood has the greater buoyant force acting on it. d. both cubes have the same buoyant force acting on it.

Explanation:

B. The cube of iron has the greater buoyant force acting on it.

This is because it is displacing more water.

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.