Why might sighting a line of offshore breakers cause sailors to turn their boats around?

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

Of element x has 22 protons, how many electrons does it have