3 years ago

The turbines can be seen inside this hydroelectric dam. Why are they located at that particular height?

Physics

2 answers:

Yakvenalex [24]3 years ago

5 0

Answer:

Explanation:

the answer is number three

Mariulka [41]3 years ago

3 0

Answer: The answer is number is two

Explanation: Because as it says there is a large drop, so the water will still have a lot of kinetic energy to transfer to the turbine.

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A uniform, spherical, 1900.0 kg shell has a radius of 5.00 m. Find the gravitational force this shell exerts on a 1.80 kg point

Mandarinka [93]

Answer:

$F=9.09\times 10^{-9} N$

Explanation:

We are given that

Mass of spherical shell, $m_1$ =1900 kg

Mass= $m_2=1.80 kg$

Radius of shell=r=5 m

Distance between two masses=r=5.01 m

Because distance measure from center .

Gravitational force

$F=G\frac{m_1m_2}{r^2}$

$G=6.67\times 10^{-11} Nm^2/kg^2$

Using the formula

$F=6.67\times 10^{-11}\times \frac{1900\times 1.80}{(5.01)^2}$

$F=9.09\times 10^{-9} N$

Hence,the gravitational force = $F=9.09\times 10^{-9} N$

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Answer:

The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

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3 years ago

An elevator exerts a force of 8000 N to lift the passengers 15 m. How much work is the elevator doing?

Rasek [7]

Answer:120,000

Explanation:

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3 years ago

The speed of the wooden bar is changed so that the bar hits the water fewer times each second.

Hitman42 [59]

Answer:

c - the frequency of the waves decreases

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LAST ONE NEED HELP.A car accelerates from rest to 20 m/s, in 5 seconds. The car exerts a force of 6000 N. What is the mass of th

Slav-nsk [51]

Answer:

1500kg

Explanation:

Initial velocity(u)=0m/s

Final velocity(v)=20m/s

Time taken=5s

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Force=6000N

Mass=?

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3 years ago