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Serjik [45]
3 years ago
7

What is the one single most important reason that human impact on the planet has been so great?

Physics
1 answer:
PolarNik [594]3 years ago
5 0

Answer:

Increasing population

Explanation:

As we can see that the death rate is decreasing while at the same time the birth rate is increasing due to which it increased the population that directly impact the planet so great

Day by day the population of the villages, cities, states, the country is increasing which would create a direct human impact on the planet  

Therefore the increasing population is the one and single most important reason

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A man uses 560 J of work to push a shopping cart down an aisle that is 15 m long. How much force did he use?
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4 years ago
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star.
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Answer:

The question is incomplete however this kind of questions about determinate the angular speed and taking a reference of days rotating the first star.

w=0.11312 rad/s

Explanation:

The situation is about a two star the question is incomplete, miss the time rotate one star so we assume the first star rotated once in 30 days so:

Angular momentum

P_{m}=I*w

The inertia

I=\frac{3}{5}*m*r^2

The momentum must be conserved so

P_{m1}=P_{m2}

I_{1}*w_{1}=I_{2}*w_{2}

\frac{2}{5}*m*r_{1}^2*w_{1}=\frac{2}{5}*m*r_{2}^2*w_{2}

notice don't have to know the mass or use the density however at the end can determinate

w_{2}=\frac{r_{1}*w_{1}}{r_{2}}

Time can determinate the frequency so determinate angular speed of the first star

w_{1}=2\pi*f_{1}

t_{1}=30days*\frac{24hr}{1day}*\frac{60minute}{1hr}*\frac{60s}{1minute}=2592000s

f_{1}=\frac{1}{t_{1}}=\frac{1}{2592000}=3.858x10^-7Hz

w_{1}=2.424x10^{-6}\frac{rad}{s}

w_{2}=\frac{7.0x10^8m}{15x10^3m}*2592000

w_{2}=0.11312 rad/s

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3 years ago
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