Abat flying in a cave emits a sound and receives its echo 0.1 s later. how far away is the cave wall? assume the speed of sound to be 340 m/s. answer in units of m.

Explanation:

It is given that,

A bat flying in a cave emits a sound and receives its echo 0.1 s later, t = 0.1 s

The speed of sound, v = 340 m/s

We need to find the distance between the bat and the cave wall. Distance travelled is given by :

d = 17 meters

It is the total distance between the bat and the cave wall is 17 meters. Hence, this is the required solution.

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.