what do you think you know about physics, physics is the study of matter under the effect of energy, but does this includes solid states bodies, atoms at ground states, object at microscopic size or object moving faster than light? these and more is what prompt me to ask again what is physics?
▼
the half-life of gold-198 is 2.7 days. after 5.4 days how much of the original gold-198 remains
5.4/2.7
=2, AFTER 5.4 DAYS we have two half life.
after the 1sthalf life 50% is lost
after
the 2ndhalf life 25% of the
original sample is lost.
No comments:
Post a Comment