Sebuah kolom udara memiliki panjang 40cm. Jika garpu kala mempunyai frekuensi 320Hz, maka besarnya cepat rambat gelombang bunyi diudara pada saat resonasi pertama adalahm/s.

Amagnetically soft material is placed in a strong magnetic field. what is the most likely outcome? it will become a permanent magnet because the domains will remain aligned. it will become a temporary magnet because the domains will remain aligned. it will become a permanent magnet because the domains will easily realign. it will become a temporary magnet because the domains will easily realign.