sec 2physics ch 2

[Hager1]

ارجو حل هذه الأسئلة

the frequency of a tone given by astretched string is 256 vib/s calculate the new frequency if
1- the lengh is reduced by third
2- the tension is increased by third
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aboy infront of a wall claps his hand at one second interval ,he hears the echoes after mid way between claps calculate the distance of the boy from the wall

[goegmans]

شكرا جزيلا علي هذا المجهود

[medhat5]

thankssssssssssssssss