If the zero level for the gravitational potential energy is selected to be midway down the slope, 5.50 m above point b, find the initial potential energy, the final potential energy, and the change in potential energy as the skier goes from point to ® in the figure. initial kj k) kj final change need ? man use the worked example above to you solve this problem. a 59.0 kg skier is at the top of a slope, as shown in the figure. at the initial point d, she is 11.0 m vertically above point ® (a) setting the zero level for gravitational potential energy at ®, find the gravitational potential energy of this system when the skier is at and then at b. finally, find the change in potential energy of the skier-earth system as the skier goes from point to point

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.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

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