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(I)
firstly , we will find maximum and minimum y-value
we can see that
maximum value is 5
minimum value is -5
so, we can find amplitude

..........Answer
(II)
we know that
wave length is the length of one wave
we can see that from B to F , there is one wave
and we are given it's length as 20cm
so, wavelength is 20cm......Answer
(III)
we know that

we are given
frequency =100hz
wavelength =20cm
now, we can find velocity

............Answer
Answer:
#4
Step-by-step explanation:
EDI/HDE
hope it helps
Answer:
It is already rounded
Step-by-step explanation: