Aworker pushes a crate horizontally across a warehouse floor with a force of 245 n at an angle of 55 degrees below the horizontal.
how much of the worker’s force is not used to move the crate?

a. 200.69 n
b. 419.95 n
c. 357.71 n
d. 191.32 n

The worker’s force is 200.69 N.

(a) is correct option.

Explanation:

Given that,

Force = 245 N

Angle = 55°

According to component of force

Horizontal component of force is in direction of displacement which is used to move the crate.

Vertical component of force is not used to move the crate.

We need to calculate the worker’s force which is not used to move the crate

Using y- component of force

Put the value into the formula

Hence, The worker’s force is 200.69 N.

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.

i think it's 35 meters