The amplitude of a compressional wave depends on the _____.

density of material in compressions and rarefactions
distance between crests and troughs
number of wavelengths that pass by a point each second
vibration of electric and magnetic parts

Question

The amplitude of a compressional wave depends on the _____.  
   
density of material in compressions and rarefactions
    distance between crests and troughs
    number of wavelengths that pass by a point each second
    vibration of electric and magnetic parts

mos1635 · Answer

b and c are defenatly false
for d i dont understund meanig og vibration (i know the word)
as for a if true it sould be the other way around denstity on amplitude....
i am not much of a help i know...........