The answer is 2. Magnetite. Hope I could help you :)
The frequency of the radio station is

For radio waves (which are electromagnetic waves), the relationship between frequency f and wavelength

is

where c is the speed of light. Substituting the frequency of the radio station, we find the wavelength:
False. Since the forces are pulling in equal and opposite directions, the net force is 0.
True
<span> An object at rest stays at rest and an object in
motion stays in motion with the same speed and in the same direction
unless acted upon by an unbalanced force.this is newtons first law</span>