First, children and teenagers on boats should always wear a life jacket - otherwise known as personal flotation device - whether or not they have learned to swim
In this case we have w p = W/(N -{- p)lA; or the density of the liquid varies inversely as N+p, that is, as the whole number of scale-divisions between the bottom of the tube and the plane of flotation.
flotation הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד