3 years ago

Would strontium-90 be useful for determining the age of fossils

1 answer:

4 0

False. Strontium 90 has a half life of only 30 years, and as millions of years pass, about the time fossils have been around, most if not all of any strontium would have decayed.

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3 years ago

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A book that is 2 Newton (N) on earth would be 7N on the moon. True or False? Why?

Gnom [1K]

False

The gravitation on earth is 6times than that of moon

$\\ \sf\longmapsto Force\propto Acceleration$

Hence the object which weighs 2N on earth will weigh 2/6=0.33N on moon

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All arteries except pulmonary artery carry pure blood. Why?

Marysya12 [62]

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All the arteries except pulmonary artery carry pure blood..it is so because blood flows with a high pressure and speed And because Arteries are situated deeper under the skin have thick-walled with Narrow lumen(cavity) and pulmonary artery carries deoxygenated blood i.e without oxygen..

Explanation:

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hope this will help you mate✌✌

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3 years ago

When scientists measure, they use the _____ system

Rudiy27

When scientists measure, they use the metric system.

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What happens to the matter? How does it transform? What<br> are the inputs and outputs?

Lostsunrise [7]

matter is neither created nor destroyed it only transforms

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