The cord of a musical instrument is fixed at both ends and has a length l m, diameter d mm, and density pkg/m3. (a) find the tension required in order to have a fundamental frequency offi hz. (b) determine the velocity of wave propagation, c in the cable. (c) determine the third natural frequencies of vibration of the cable, if tension is increased by 15%. wire lenth, l =2.50m , dia, d =0.8(mm), d =0.0008(m), density=7925(kg/m3), p=0.003983539(kg/m) and f1= 4(hz)

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!