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Helga [31]
3 years ago
7

How do you think scientists figure out what they think the population will be in 2050?

Physics
1 answer:
laila [671]3 years ago
4 0
They would most likely use statistics on the increase/decrease in population from previous decades and centuries. In addition to these statistics, they could use the birth and death rate and ultimately predict the increase within these next 30 years. They must also take climate change and other environmental factors into consideration when formulating such a bold prediction.
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Nadya [2.5K]

Answer:

Answer: Kelvin ________________

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3 years ago
The disk that BTK sent to the television station contained just one valid file. What was the name of the file?
icang [17]

Answer:

The name of the file is Floppy.

Explanation:

Given that,

The disk that BTK sent to the television station contained just one valid file.

We need to find the name of the file

According to given data,

The disk that BTK sent to the television station contained just one valid file.

This file is called floppy.

Floppy :

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Floppy disk are read  and written to by floppy drive.

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Briefly explain what water is.in your explanation include what a water molecule is,what elements makes up water and draw a molec
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Read 2 more answers
A proton enters a region of constant magnetic field, perpendicular to the field and after being accelerated from rest by an elec
kicyunya [14]

Answer:

 B = 1.1413 10⁻² T

Explanation:

We use energy concepts to calculate the proton velocity

starting point. When entering the electric field

        Em₀ = U = q V

final point. Right out of the electric field

        em_f = K = ½ m v²

energy is conserved

       Em₀ = Em_f

       q V = ½ m v²

       v = \sqrt{2qV/m}

we calculate

       v = \sqrt{\frac{ 2 \ 1.6 \ 10^{-19} \ 300}{1.67 \ 0^{-27}} }

       v = \sqrt{632.3353 \ 10^8}

       v = 25.15 10⁴ m / s

now enters the region with magnetic field, so it is subjected to a magnetic force

        F = m a

the force is

       F = q v x B

as the velocity is perpendicular to the magnetic field

       F = q v B

acceleration is centripetal

       a = v² / r

we substitute

       qvB =1/2  m v² / r

       B =  v\frac{m v}{2 q r}

we calculate

       B = \frac{1.67 \ 10^{-27} 25.15 \ 10^4 }{1.6 \ 10^{-19} 0.23}

       B = 1.1413 10⁻² T

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3 years ago
Kate is testing whether caffeine affect your heart rate independent variable or dependent variable
Bumek [7]
She is testing independent variable
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