Some metals having unpaired electrons contain a strong magnetic response, i.e, they can be magnetized by an external magnetic field.
7500m because 1,500 in 1 sec so 1500x5 7500
Answer:
The frequency of wave is 4 hertz.
Explanation:
Given,
wave length = 8m
speed of sound ( v) = 32 m/s
frequency ( f) = ?
we know,
v = f × lambda
or, 32 = f × 8
or, f = 32/8
or, f = 4 Hertz.