1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nydimaria [60]
3 years ago
9

When the Glen Canyon hydroelectric power plant in Arizona is running at capacity, 690 m3 of water flows through the dam each sec

ond. The water is released 220 m below the top of the reservoir.If the generators that the dam employs are 90% efficient, what is the maximum possible electric power output?Express your answer with the appropriate units.
Physics
1 answer:
igomit [66]3 years ago
6 0

Answer:

The maximum electric power output is P_{max} =1.339*10^{9} \ W

Explanation:

From the question we are told that

        The capacity of the hydroelectric plant is \frac{V}{t}   =  690 \ m^3 /s

         The level at which water is been released is h  =  220 \ m

        The efficiency is  \eta  =0.90

       

The electric power output is mathematically represented as

       P  = \frac{PE_l - PE _o}{t}

Where  PE_l is the potential energy at  level h which is mathematically evaluated as  

          PE_l  =  mgh

and  PE_o  is  the potential energy at ground level which is mathematically evaluated as  

          PE_o  =  mg(0)

         PE_o  =  0

So  

         P  = \frac{mgh}{t}

here  m  =   V *  \rho

where V is volume  and  \rho is density of water whose value is  \rho = 1000 kg/m^3

 So  

         P  = \frac{(\rho * V) * gh}{t}

        P  = \frac{V}{t} * gh \rho

substituting values  

       P  =690 * 9.8 * 220 * 1000

      P  =1.488*10^{9} \ W

The maximum possible electric power output is

           P_{max} = P * \eta

substituting values  

         P_{max} =1.488*10^{9} * 0.90

         P_{max} =1.339*10^{9} \ W

You might be interested in
Gas
Brut [27]
A: what is it called when a solid jumps straight to a gas?
B: what is it called when a liquid becomes a gas?
C: what is it called when a solid changes into a liquid?

Im sure you can at least figure out the last one! (hint: this happens when ice becomes water)
3 0
3 years ago
Read 2 more answers
What is equal to the kinetic energy of a car with a mass of 0.5t (tonne) if it travels evenly at 70 km/h?
Aleonysh [2.5K]
Formula for kinetic energy is 1/2mv^2 so that answer should most probably be 94521.6J
5 0
3 years ago
X-rays with frequency 3 ⨉ 10 18 Hz shine on a crystal, producing an interference pattern. If the first bright spot is observed a
FrozenT [24]

Answer:

5.1645\times 10^{-11}\ m

Explanation:

n = Order = 1

c = Speed of light = 3\times 10^8\ m/s

f = Frequency = 3\times 10^{18}\ Hz

\theta = Angle = 75.5^{\circ}

Lattice spacing is given by

d=\dfrac{n\lambda}{2\sin\theta}\\\Rightarrow d=\dfrac{n\times c}{f2\sin\theta}\\\Rightarrow d=\dfrac{1\times 3\times 10^{8}}{3\times 10^{18}\times 2\times \sin75.5^{\circ}}\\\Rightarrow d=5.1645\times 10^{-11}\ m

The lattice spacing of the crystal is 5.1645\times 10^{-11}\ m

6 0
3 years ago
In the periodic table, similar elements are arranged in vertical columns called
tester [92]

Answer:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior.

Explanation:

3 0
3 years ago
Read 2 more answers
List the jovian planets in order of increasing distance from the sun?
trapecia [35]
Here are the planets listed in order of their distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. An easy mnemonic for remembering the order is “My Very Educated Mother Just Served Us Noodles

Hope this helps.
5 0
3 years ago
Other questions:
  • Suppose you wish to whirl a pail full of water in a vertical circle at a constant speed without spilling any of its contents (ev
    14·1 answer
  • Auroras occur at _____ of a planet. the equator the north magnetic pole only the south magnetic pole only both magnetic poles
    10·1 answer
  • Kinetic and potential; what type of energy is each of the points
    7·1 answer
  • Look at Concept Simulation 5.2 to review the concepts involved in this question. Two cars are identical, except for the type of
    11·1 answer
  • The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=5240
    8·1 answer
  • What changes would occur at a molecular level if a liquid is placed in cool conditions?
    11·2 answers
  • What are the seven different forms of energy? Give an example of each.
    13·1 answer
  • Monochromatic light is incident on two slits separated by 0,2 mm. An interference pattern is observed on a screen 3,7 m away. Th
    8·1 answer
  • Arturo dreams about travelling to faraway stars someday. He read that the closest star to Earth is Proxima Centauri, which is 4.
    5·1 answer
  • Why is it difficult to define abnormal behavior?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!