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Zielflug [23.3K]
3 years ago
6

All of the following statements are true of hydroelectric power EXCEPT: A. Hydroelectric power stations rely on dams to help har

ness the energy of moving water. B. The water within hydroelectric power stations will transfer energy from gravitational potential energy to kinetic energy. C. Hydroelectric power stations can only produce enough energy for a small town as they do not produce large quantities of energy. D. Hydroelectric power stations are very reliable source of energy.
Physics
2 answers:
Artist 52 [7]3 years ago
5 0
The correct answer should be C. Hydroelectric power stations can only produce enough energy for a small town as they do not produce large quantities

Hydroelectric power stations can power even large cities that have millions of people.
kicyunya [14]3 years ago
3 0
In my opinion, the correct answer among the choices listed above is option C. <span>Hydroelectric power stations cannot only produce enough energy for a small town as they do produce large quantities of energy for a large area. Hope this answers the question.</span>
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3 years ago
A tugboat tows a ship with a constant force of magnitude F1. The increase in the ship's speed during a 10 s interval is 5.0 km/h
Ratling [72]

Answer

given,

time  = 10 s

ship's speed = 5 Km/h

F = m a

a is the acceleration and m is mass.

In the first case

F₁=m x a₁

where a₁ =  difference in velocity / time

F₁ is constant acceleration is also a constant.

Δv₁ = 5 x 0.278

Δv₁ = 1.39 m/s

a_1=\dfrac{1.39}{10}

a₁ = 0.139 m/s²

F₂ =m x a₂

F₃ = F₂ + F₁

Δv₃ = 19 x 0.278

Δv₃ = 5.282 m/s

a₃=Δv₂ / t

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a₃ = 0.5282 m²/s

m a₃=m a₁ + m a₂

a₃ = a₂ + a₁

0.5282 = a₂ + 0.139

a₂=0.3892 m²/s

F₂ = m x 0.3892...........(1)

F₁ = m x 0.139...............(2)

F₂/F₁

ratio = \dfrac{0.3892}{0.139}

ratio = 2.8

6 0
3 years ago
Gggcdfubrdegubtcwftvf y day rx u e HHS’s forget h
aev [14]

Answer:

um . . . yes ?

8 0
2 years ago
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Oksi-84 [34.3K]
First you need to find the initial x component which is 13.02. After that you plug it into the 3rd formula on the AP physics formula sheet. Then rearrange it into the quadratic formula and solve for time. The answer should be 4.1 seconds.

8 0
2 years ago
Calculate the force needed to bring a 1,019-kg car to rest from a speed of 29 m/s in a distance of 118 m
son4ous [18]
Acceleration = ▵v/▵t
Time = d/v
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A = 29/4 = 7.25 m/s²
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F= 1,019 * 7.25
F= 7,387 N
8 0
3 years ago
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