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3 years ago

What should scientists do when a new discovery is made that goes against a long acepted theory?

1 answer:

3 0

(A) is incorrect because that new discovery could be true. The scientist would have to conduct multiple trials under a multitude of conditions to ensure its validity, however. (C) is incorrect because long-accepted theories are often backed with lots of evidence and by changing it, his observations haven't yet been accepted and no one would believe him. (B) is correct because he should analyze and compare his findings with findings already accepted within the scientific community. (D) is incorrect because theories must be backed with lots of evidence, and he would have to conduct more trials in order to be able to create a theory. I hope this helps!

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A fossil is found to have a 14c14c level of 73. 73. 0 ompared to living organisms. how old is the fossil?

AnnyKZ [126]

If the 14C level of fossils is 73% compared to living organisms. It will be 2602 years.

<h3>What is radiocarbon dating? </h3>

This method is used to estimate the relative age of carbon-based materials. This is done usually for fossils which originate from living organisms.

This age is estimated by estimating the percentage of carbon-14 isotopes in the fossil. This is done by comparing this percentage to a reference standard used internationally. This method is of tremendous use in palaeontology. It has also found its use in hydrology, oceanography, geology etc.

Fossil age is determined by

At = (Ao) x (1 - 0.5)^(t/h)

Here, At/Ao = 0.73

So, 0.73 = 0.5^(t/5730)

Therefore, t = 2602 years

Read more about carbon dating, here

brainly.com/question/3753282

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1 year ago

During a nuclear reaction, an isotope of a certain atom gives off a particle consisting of two protons and two neutrons, and the

aev [14]

Answer:

Type of radioactive decay which has occurred is an alpha decay.

Explanation:

Type of radioactive decays:

Alpha decay is defined as the decay process in which alpha particle is released. In this process, a heavier nuclei decays into a lighter nuclei. The alpha particle released carries a charge of +2 units and a mass of 4 units.

Beta decay is defined as the process in which beta particle is emitted. In this process, a neutron gets converted to a proton and an electron. The released beta particle is also known as electron.

Gamma decay In this process, an unstable nuclei releases excess energy by a spontaneous electromagnetic process and gamma -radiations are emitted. These radiations does not carry any charge and are electrically neutral.

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3 years ago

Which unit of measurement best matches the size of microorganisms

postnew [5]

Answer:

bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Explanation:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

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3 years ago

Animals cells lack _____.

san4es73 [151]

i guess all of above

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3 years ago

What factor would result in an increased mortality in a population due to increased competition for water?

inn [45]

Mortality, or death rate is a measure of the number of deaths in a particular population, scaled to the size of that population, per unit of the time. In this case a factor that would result to an increased mortality rate in a population due to increased competition of water will be the density-dependent factor.

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3 years ago