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
************************************************** ***************************
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