You hear your brother playing the guitar in his room at the end of the hallway, 8 m away from you. How long does the sound take to travel from his guitar to your ear?

answer: b.

explanation:

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

total distance/total time

(85 + 82)/(5+3)

167/8

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