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
Alenkasestr [34]
3 years ago
9

The water in an 8-m-diameter, 3-m-high above-ground swimming pool is to be emptied by unplugging a 3-cm-diameter, 25-m-long hori

zontal pipe attached to the bottom of the pool. Determine the maximum discharge rate of water through the pipe in liters per second.
Engineering
1 answer:
Dima020 [189]3 years ago
8 0

Answer:

The maximum discharge rate of water is 4.6 L/s

Explanation:

Given data:

d=diameter=8 m

h=height=3 m

The mathematical expression for the theoritical velocity is:

v_{th} =\sqrt{2gh} =\sqrt{2*9.8*3} =7.6681m/s

The maximum discharge can be calculate by:

Q=C_{d} Av_{th}

Here

Cd=coefficient of discharge=0.855

Q=0.855*\frac{\pi }{4} *d^{2} *vx_{th} =0.855*\frac{\pi }{4} *0.03^{2} *7.6681=0.0046m^{3} /s=4.6L/s

You might be interested in
4. The instant the ignition switch is turned to the start position,
geniusboy [140]

Answer:

D. Both pull-in and hold-in windings are energized.

Explanation:

The instant the ignition switch is turned to the start position, "Both pull-in and hold-in windings are energized." This is because the moment the ignition switch is turned to the start position, voltage passes through to the S terminal of the solenoid.

The hold-in winding is attached to the case of the solenoid. Similarly, the pull-in winding is also attached to the starter motor. Thereby, the current will move across both windings by getting energized to generate a strong magnetic field.

4 0
2 years ago
How is the energy harnessed and converted into useful energy?
garri49 [273]

Answer:

1. How energy is harnessed?  

Another way to tap solar energy is by collecting the sun's heat. Solar thermal power plants use heat from the sun to create steam, which can then be used to make electricity. On a smaller scale, solar panels that harness thermal energy can be used for heating water in homes, other buildings, and swimming pools.

2. How is solar energy converted into useful energy?

Solar panels convert the sun's light into usable solar energy using N-type and P-type semiconductor material. When sunlight is absorbed by these materials, the solar energy knocks electrons loose from their atoms, allowing the electrons to flow through the material to produce electricity.

Explanation:

hope it helps, please mark as brainliest

6 0
2 years ago
An object of mass 521 kg, initially having a velocity of 90 m/s, decelerates to a final velocity of 14 m/s. What is the change i
Harman [31]

Answer:2058.992KJ

Explanation:

Given data

Mass of object\left ( m\right )=521kg

initial velocity\left ( v_0\right )=90m/s

Final velocity\left ( v\right )=14m/s

kinetic energy of body is given by=\frac{1}{2}mv^{2}

change in kinectic energy is given by substracting  final kinetic energy from initial kinetic energy of body.

Change in kinetic energy=\frac{1}{2}\times m\left ( V_0^{2}-V^2\right )

Change in kinetic energy=\frac{1}{2}\times521\left ( 90^{2}-14^2\right )

Change in kinetic energy=2058.992KJ

7 0
3 years ago
What can be the main disadvantage of pulse amplitude modulation?​
Feliz [49]

Answer:

transmission bandwidth required is very large.

Explanation:

4 0
2 years ago
Which of the following is true about ideal standards? a.Ideal standards provide allowance for normal breakdowns and interruption
marysya [2.9K]

Answer: D. All of the choice A, B and C are correct.

8 0
3 years ago
Other questions:
  • 2.14 (a) Using series/parallel resistance reductions, find the equivalent resistance between terminals A and B in the circuit of
    14·1 answer
  • A rigid tank with a volume of 4 m^3 contains argon at 500 kPa and 30 deg C. It is connected to a piston cylinder (initially empt
    14·1 answer
  • You are a designer of a new processor. You have to choose between two possible implementations (called M1 and M2) of the same ar
    5·1 answer
  • If you’re designing a new pair of shoes, what are some things you’ll have to think about ??
    6·2 answers
  • An electrochemical cell is composed of pure nickel and pure iron electrodes immersed in solutions of their divalent ions. If the
    13·1 answer
  • ). A 50 mm diameter cylinder is subjected to an axial compressive load of 80 kN. The cylinder is partially
    8·1 answer
  • Where you live might affect how often you change your cabin air filter.<br> True<br> False
    8·1 answer
  • Consider a machine of mass 70 kg mounted to ground through an isolation system of total stiffness 30,000 N/m, with a measured da
    9·1 answer
  • Code for XOR with two input logic gate
    8·1 answer
  • Write a Nios II assembly program that reads binary data from the Slider Switches, SW11-0, on the DE2-115 Simulator, and display
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!