You are driving on the highway at 40 m/s with another car driving next to you at exactly the same speed. When you honk your horn (with a frequency of 315 Hz), what frequency of sound will the driver of other car perceive?​

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

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.