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?

a simple 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.

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

Suppose water is leaking from a tank through a circular hole of area ah at its bottom. when water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second to cah 2gh , where c (0 < c < 1) is an empirical constant. a tank in the form of a right-circular cone standing on end, vertex down, is leaking water through a circular hole in its bottom. (assume the removed apex of the cone is of negligible height and volume.) (a) suppose the tank is 20 feet high and has radius 8 feet and the circular hole has radius 2 inches. the differential equation governing the height h in feet of water leaking from a tank after t seconds is dh dt = − 5 6h3/2 . if the height of the water is initially 8 feet, how long will it take the tank to empty? (round your answer to two decimal places.)