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NARA [144]
3 years ago
13

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:

3

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

6 0
3 years ago
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Answer:

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7 0
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:

7 0
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

3 0
3 years ago
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

Acceleration=v-u/t

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Force=6000N

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3 years ago
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