If a bar of copper is brought near a magnet, the copper bar will be repelled by the magnet (B). Copper itself is not magnetic, but it sets up electric currents when a magnet is brought close to a bar of copper. These electric eddy currents push the magnet away from the copper bar. Magnetism and electricity are related and the interaction between the copper and a magnet is used in power plants to generate the electricity that we use every day.
Well think about it, Benvolio and Mercutio are Romeo's best friends. They are worried about him, because firstly he is in love with Rosaline - this love in unrequited. This makes Romeo very depressed for a long period of time. So, of course they are worried about him. Also, after Capulet's party, Romeo mysteriously disappears, which leaves both Mercutio and Benvolio worried for him. As well as the fact that Tybalt discovered that Romeo had gatecrashed the party and now is looking for vengeance. Hope this helped.
