2.which would take more work: lifting a 4 n box 0.5 m or a 1 n box 4 m? explain your answer.

Lifting a 1 N box for 4 m, will take more work

Work is done when a an object with a certain weight is moved at a given distance;

It is the product of force and distance and therefore varies directly to both distance and force.

Work = Force × distance;

For a 4 N box 0.5 m;

Work = 4 × 0.5

        = 2 Joules

For a 1 N box 4 m

Work = 1 × 4

        = 4 Joules

Therefore, Lifting a 1 N box for 4 m, will take more work

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.