You are exposed to some natural sources of radiation from radioactive decay every day - even in some of the foods you eat. identify at least 3 sources of radiation from radioactive decay that humans are exposed to daily. do these pose a great risk to your health ?

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?