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PilotLPTM [1.2K]
3 years ago
13

One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam. Question 2

options: True False
Physics
1 answer:
vivado [14]3 years ago
7 0

Answer:

True

Explanation:

It can cause flooding and destruction of habitat because of dammed rivers create large reservoirs upstream which can spill out to the surrounding during heavy rainfall causing flooding and destruction of natural habitat.

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If the speed of a wave doubles while the frequency remains the same, it means
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Explanation:

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v = fλ

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Wavelength λ = v/f

So, if the frequency is kept constant, wavelength of the wave becomes directly proportional to velocity of the wave.

And this implies that, as the speed double, the wavelength is double.

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A subatomic particle that has a positive charge and that is located in the nucleus of an atom
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c

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The half-life of the reaction gets shorter as the initial concentration is increased. True or False
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True

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What effect does the sun have on the earth. written response
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Thought Experiment: A monkey escapes from a zoo and climbs a tree. After failing to entice the monkey down, a zookeeper fires a
Andreyy89

Explanation:

When bullet is shot towards the monkey then let say the distance of monkey from the bullet is "d"

so we can find the time to reach the bullet to the monkey

t = \frac{d}{vcos\theta}

Now similarly we can find the vertical displacement of the bullet in the same time

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\Delta y = v sin\theta (\frac{d}{vcos\theta}) - \frac{1}{2}gt^2

so it is given as

\Delta y = d tan\theta - \frac{1}{2}gt^2

here if the monkey is initially at height H above the ground at given angle then we can say

H = dtan\theta

so we can say that

\Delta y = H - \frac{1}{2}gt^2

So if at the same time monkey will fall down then the height of monkey from ground after time "t" is given as

\Delta y = H - \frac{1}{2}gt^2

so here bullet will hit the monkey as both monkey and bullet are at same position.

3 0
2 years ago
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