I need help with this, Its too difficult for me to understand

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explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

increase masses, decrease separation

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).