Pennies used to be called “coppers.” How do you suppose they got this nickname?

Pennies used to be called coppers because they were were mostly made out of copper (95% copper and 5% tin and zinc).

They were copper that’s why they have that look

Answer: buoyancy forceexplanation: in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.