What equation do i use to get average velocity

If steel is more dense that lake water, why can a boat float

** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?