What is behind a black whole?

Sara is creating an experiment. her hypothesis states the following. if i increase the air in my tires, then i will get better gas mileage. if this is her hypothesis what column titles do we need in our date table? a. air pressure in tire (psi) and gas mileage (mph) b. air pressure in the atmosphere (psi) and gas mileage (mph) c. miles (m) and gallons per mile (g) d. old battery and new battery

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

What is meant by the statement" the melting poin of glycerine is 13 degree celsius