the level of water in a measuring cylinder rises from 50centimeterscubic to55.7cm3 when a metal block weighing 45g is submerged in water cylinder a)calculate density of meter blockb)state two differences between density and relative density

Abaseball is thrown a distance of 20 meters. what is its speed if it takes 0.5 seconds to cover the distance

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?