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3 years ago

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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If the speed of an object doubles its kinetic energy does what

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A boat at rest on the ocean moves up and down as water waves pass beneath it. What can be concluded about the nature of the wate

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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?

dolphi86 [110]

You are given the 560 J of work of a man used while pushing a shopping cart down an aisle that is 15 m long. You re asked to find how much force he used. The equation is W = Fd where W is work, F is force and d is distance.

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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.

Andrews [41]

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

Young people do have the ability to initiate a positive change in their community. Depending where they live they could always g

ddd [48]

Yes, young people have that ability. However, many of them do not use their ability wisely, and instead of contributing to their community, they only take.

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4 years ago

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