Ej is taking his little sister, ebony, on her first carousel ride. his mass is 75.0 kg and her mass is 10.0 kg. they ride the same horse and it is 11.0 meters from the center of the carousel. if their angular momentum is 14020 kg m2/s, what is their linear speed?

linear speed is  15 m/s

Explanation:

The amount of angular movement is the product of the moment of inertia by the angular velocity

                L = I w

The expression for the moment of inertia is

                 I = m r²

The angular velocity is related to the linear velocity by

                 V = r w

With these three equations, we can substitute the first in the second and calculate

                 I = (75 + 10) 11²

                 I = 10285 Kg m²

                v = r (L / I)

                v = 11 (14020/10285)

               v = 15 m / s

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.