the half-life of iodine-131 is 8.1 days. how much time had passed if i only have one-fourth of the original sample?
1 answer:
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Answer:
Explanation:
This is true because gravity is independent of mass. Whether it's a heavy or a light object, when dropped, they both will hit the ground at the same time. The reason is that gravity does not depend on mass.
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<h2>~AnonymousHelper1807</h2>Answer:
It was proposed by Isaac Newton
Explanation:
The law of universal attraction of expression
F = G m1m2 / r ^ 2
where G is a constant, m₁ and m₂ are the masses of the bodies and r the distance between them.
It was proposed by Isaac Newton
With this law Newton explained that the force that pulls the moon towards the earth is the same as that which attracts an apple towards the earth