What are some characteristics of a proton?

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

Which composition of water moves to begin a deepwater current?

Could we see a galaxy that is 20 billion light-years away?