2 years ago

The world will face energy crisis in near future justify this statement

1 answer:

5 0

Answer:

Nowadays most of our works are being done through different types of energy which are non-renewable. People are wasting lot of energy (hydel, dolar etc.) due to which in future we can face energy crisis.

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3 years ago

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3 years ago

The same pipe is used to carry both air and water. For the same fluid velocity and friction factor for the air and water flows:

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the pressure drop for the water flow is greater than that for the air flow.

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3 years ago

Which of the following is an example of a physical change?

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3 years ago

Can a average velocity be zero.Why?

marishachu [46]

<u>Answer:</u>

Yes

<u>Explanation:</u>

Average velocity is the ratio of total displacement and time taken for that displacement:

$average \space\ velocity = \frac{displacement}{time}$

This means if displacement is zero, then average velocity will also be zero.

Displacement is zero when an object moves some distance in one direction, and then moves the same distance but in the opposite direction.

∴ As it is possible for displacement to be zero, it is also possible for average velocity to be zero.

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2 years ago