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scoundrel [369]
2 years ago
10

Which best describes a similarity between power plants that use water as an energy source and those that use wind as an energy s

ource?
A.Both use heat from within Earth to produce electricity.
B.Both use kinetic energy to produce electricity.
C.Both use resources that are not abundant.
D.Both use resources that produce a lot of air pollution.
Physics
2 answers:
stiks02 [169]2 years ago
6 0

The correct answer to the question is : B) Both use kinetic energy to produce electricity.

EXPLANATION:

Hydroelectricity is produced when the kinetic energy of the falling water rotates the turbine. The generator associated with the turbine is rotated, and electric energy is produced due to electric magnetic induction.

In case of power plants in which wind is used as energy source, the same process happens. The kinetic energy of wind rotates the propellers of wind turbine which in turn produces electric energy.

Hence, the correct similarity between them is statement B.

disa [49]2 years ago
3 0
The hydropower plant and wind turbines both uses kinetic energy to produce mechanical power and convert the mechanical energy using a generator to an electrical energy. They both have the process to produce energy but they differ in the source the hydropower plant uses water to whit the wind turbines power plant uses wind. Therefore the answer is letter B. 
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If you take any pitch on the keyboard, the next occurrence of the same letter name going towards the left (down) will vibrate:
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Answer:

A. Twice as slow

Explanation:

8 0
2 years ago
Gretchen runs the first 4.0 km of a race at 5.0 m/s. Then a stiff wind comes up, so she runs the last 1.0 km at only 4.0 m/s.
KIM [24]

Answer:

The velocity is v = 4.76 \ m/s

Explanation:

From the question we are told that

   The first distance is   d_1  =  4.0 \ km  =  4000 \ m

   The  first speed  is  v_1 =  5.0 \ m/s

    The  second distance is  d_2  =  1.0 \ km  =  1000 \ m

    The  second speed  is  v_2  =  4.0 \ m/s

Generally the time taken for first distance is  

      t_1 =  \frac{d_1 }{v_1 }

        t_1 =  \frac{4000}{5}

       t_1 =  800 \ s

The time taken for second  distance is

           t_1 =  \frac{d_2 }{v_2 }

        t_1 =  \frac{1000}{4}

       t_1 =  250 \ s

The total time is mathematically represented as

     t =  t_1 + t_2

=>   t =  800 + 250

=>    t =  1050 \ s

Generally the constant velocity that would let her finish at the same time is mathematically represented as

      v =  \frac{d_1 + d_2}{t }

=>    v =  \frac{4000 + 1000}{1050 }

=>    v = 4.76 \ m/s

7 0
2 years ago
The force diagram represents a girl pulling a sled with a mass of 6.0 kg to the left with a force of 10.0 N at a 30.0 degree ang
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6 0
2 years ago
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lubasha [3.4K]

Answer:

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Explanation:

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Given that ĉ = Q / (m.ΔT),

where Q= calories transferred between the system and its environment or another system (unity: calorie or cal) (what we are trying to find out),

m= mass of the substance (unity: grams or g), and

ΔT= difference of temperature (unity: Celsius degrees or °C); and

m= 95g and ΔT= 16°C:

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8 0
2 years ago
If the gas in a container absorbs 275 Joules of heat, has 125 Joules of work done on it, then does 50 Joules of work, what is th
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Answer:

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Explanation:

Given that

Q= 275  J

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Sign -

1.Heat rejected by system - negative

2.Heat gain by system - Positive

3.Work done by system = Positive

4.Work done on the system-Negative

Lets take change in the  internal energy =ΔU

We know that

Q= ΔU + W(net)

275 = ΔU -75

ΔU= 275 + 75 J

ΔU=350 J

The increase in the internal energy = 350 J

7 0
2 years ago
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