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3 years ago

What are positive and negative aspects of going to university

Social Studies

1 answer:

artcher [175]3 years ago

5 0

Answer:

good: knowledge bad: anxiety

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Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1.25 billion years. By

attashe74 [19]

Answer:

The rock is 3.75 billion years ago.

Explanation:

Given that:

Half life = 1.25 billion years

1 billion years = 10⁹ years

So,

Half life = 1.25 × 10⁹ years

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$k=\frac {ln\ 2}{1.25\times 10^9}\ year^{-1}$

The rate constant, k = 5.5452 × 10⁻¹⁰ years⁻¹

Initial amount [A₀] = 80 micrograms

Final amount $[A_t]$ = 10 micrograms

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

So,

$10=80\times e^{-5.5452\times 10^{-10}\times t}$

$80e^{-5.5452\times \:10^{-10}x}=10$

$\frac{80e^{-5.5452\times \:10^{-10}x}}{80}=\frac{10}{80}$

$\ln \left(e^{-5.5452\times \:10^{-10}x}\right)=\ln \left(\frac{1}{8}\right)$

$x=\frac{10^{10}\times \:3\ln \left(2\right)}{5.5452}=3.75\times 10^9$

So,

The rock is 3.75 billion years ago.

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3 years ago

Which term characterizes findings from the sample that make it possible to draw conclusions about the larger population than the

STALIN [3.7K]

Answer:

Generalizable

Explanation:

It is always not possible to select the entire population to conduct a study. So, a sample is chosen from the population which has the same differences of factors in equal proportions. Only then will the research be considered as valid for the whole population.

When the sample represents the population completely then the results of the study can be extended to the population. This is known as generalization.

Hence, the question is referring to generalizable.

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3 years ago

Is zebra crossing a traffic regulation

vovikov84 [41]

It is very important if we do not cross the zebra crossing we might die in an accident

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2 years ago

Which Fort did the Green Mountain Boys captured in New York

Inessa [10]

They captured Fort Ticonderoga on May 10th, 1775. I hope that helps! :)

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3 years ago

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What are the effects of state development

Dimas [21]

Answer:

Good jobs in rural areas, more clean energy, fighting deforestation and climate change, tax revenue and payments to developing countries. These are some examples of the various development impacts that are generated by the companies Finnfund finances

Explanation:

please mark me as brilliant answer please

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2 years ago

What are positive and negative aspects of going to university​

What are positive and negative aspects of going to university