The force between two parallel wires carrying currents in the same direction is attractive. It is repulsive if the currents are in opposite directions.
if there is not a reaction
Explanation:
The <em>electromagnetic spectrum</em> is the name given to the full range of frequencies and/or wavelengths that electromagnetic phenomena may have.
Human eyes respond to a small range of wavelengths in that spectrum. That response is called <em>sight</em>. Because humans can see that electromagnetic energy, it is called <em>visible light</em>.
So the formula for density is mass divided by volume, so it would be
Explanation:
because the boy has larger surface area due to which he offers the larger air resistance which decreases the acceleration so, he will fall towards the earth's surface approximately with constant velocity.