Asimple model shows how drawing a bow across a violin string causes the string to vibrate. as the bow moves across the string, static friction between the bow and the string pulls the string along with the bow. at some point, the tension pulling the string back exceeds the maximum static friction force and the string snaps back. this process repeats cyclically, causing the string's vibration. assume the tension in a 0.33-m-long violin string is 65 n, and the coefficient of static friction between the bow and the string is μs = 0.80. if the normal force of the bow on the string is 0.75 n, how far can the string be pulled before it slips if the string is bowed at its center?

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.

d. air pressure decreases as altitude increases.

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm