3 years ago

Why isn't all fresh water usable?

2 answers:

lina2011 [118]3 years ago

6 0

Answer:

2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost

4vir4ik [10]3 years ago

4 0

This was off the internet -

Answer:

2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost.

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Name three ways electricity can be produced.

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A rifle of mass M is initially at rest, but is free to recoil. It fires a bullet of mass m with a velocity +v relative to the gr

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Answer:

$V=-\dfrac{mv}{M}$

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Given that

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velocity of bullet = v

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There is no any external force ,that is why linear momentum of the system will be conserve.

Initial linear momentum = Final linear momentum

M x 0 + m x 0 = M x V + m v

0 = M x V + m v

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Negative sign indicates that ,the recoil velocity will be opposite to the direction of bullet velocity.

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3 years ago

What is the guage pressure of an object with a mass of 30 kg and 5ft height?

wariber [46]

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In any circuit, current is inversely proportional to:<br>potential<br>resistance<br>emf<br>voltage

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