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
svetlana [45]
3 years ago
10

A pressurized tank of water has a 10-cm-diameter orifice at the bottom, where water discharges to the atmosphere. The water leve

l is 2.5 m above the outlet. The tank air pressure above the water level is 250 kPa (absolute) while the atmospheric pressure is 100 kPa. Neglecting frictional effects, determine the initial discharge rate of water from the tank.
Physics
2 answers:
Alex Ar [27]3 years ago
6 0

Answer:

The velocity is 18.68m/s

Explanation:

Bernoulli's equation is applicable for stream line flow of a fluid. The flow must be steady and uniform flow. The Bernoulli's equation between inlet and outlet is written as:

P1/pg + V1/2g + Z1 = P2/pg + V2^2 + Z2

Where V1 and V2 are velocity of fluid at point 1 and 2b. The diameter of the tank too will be larger than that of the nozzle. Hence the velocity at point 1 will be 0.V1= 0

Substituting the values in to the equation

250 ×10^3/1000g + 0/g + 2.5 = 100×10^3/1000g + V2^2/2g + 0

250 + 2.5g = 100 + V2^2/2

250 + (2.5 × 9.8) = 100 V2^2/2

250 + 23.525- 100 = V2^2/2

174.525 = V2^2/2

Cross multiply

174.525 × 2 = V2^2

V2 = 349.05

V2 = Sqrt(349.05)

V2 = 18.68m/s

Diano4ka-milaya [45]3 years ago
3 0

Answer: 0.15m³/s

Explanation:

To solve this question, we are going to have to apply Bernoulli's equation.

[(P1/ρg) + (V1²/2g) + Z1] = [(P2/ρg) + (V2²/2g) + Z2]

V1 and V2 represent the velocities of the fluid at levels 1 and 2 respectively.

Note that, the diameter of the tank is very much larger than that of the nozzle, as such, it can be neglected. V1 = 0

Z2 also is 0

Substituting in the equation, we have

[(250*10^3/1000g) + (0/2g) + 2.5] = [(100*10^3/1000g) + (V2²/2g) + 0]

250/g + 2.5 = 100/g + V2²/2g

250 + 2.5g = 100 + V2²/2

Using g = 9.8

250 + 2.5*9.8 = 100 + V2²/2

250 + 24.5 = 100 + V2²/2

274.5 - 100 = V2²/2

174.5 = V2²/2

349 = V2²

V2 = 18.68m/s

V = Q/A

A = πd²/4

A = [π*(10*10^-2)²]/4

A = 7.85*10^-3m²

Q = VA

Q = 18.68 * 7.85*10^-3

Q = 0.15m³/s

You might be interested in
A 10-foot ladder is leaning straight up against a wall when a person begins pulling the base of the ladder away from the wall at
docker41 [41]

Answer:

y = 4.36

Explanation:

Let the height of the ladder be L

L = 10

Also:

  • Let x = distance\ from\ the\ base\ of\ the\ ladder
  • Let y = height\ of\ the\ base\ of\ the\ ladder

When the ladder leans against the wall, it forms a triangle and the length of the ladder forms the hypotenuse.

So, we have:

L^2 = x^2 + y^2 --- Pythagoras Theorem

When the base is 9ft from the wall, this means that:

x = 9

Substitute 9 for x and 10 for L in L^2 = x^2 + y^2

10^2 = 9^2 + y^2

100 = 81 + y^2

Make y^2 the subject

y^2 = 100 - 81

y^2 = 19

Make y the subject

y = \sqrt{19

y = 4.36

<em>Hence, the true distance at that point is approximately 4.36ft</em>

8 0
3 years ago
Discuss the factors that are used to determine power.
True [87]
<span>The factors that are used to determine power are:
Voltage,current and the power factor.

</span><span>Power = Voltage x Current x K
Watts = Volts x Amps x Power Factor</span>
5 0
3 years ago
Read 2 more answers
At what displacement of a sho is the energy half kinetic and half potential? what fraction of the total energy of a sho is kinet
expeople1 [14]

As we know that KE and PE is same at a given position

so we will have as a function of position given as

KE = \frac{1}{2}m\omega^2(A^2 - x^2)

also the PE is given as function of position as

PE = \frac{1}{2}m\omega^2x^2

now it is given that

KE = PE

now we will have

\frac{1}{2}m\omega^2(A^2 - x^2) = \frac{1}{2}m\omega^2x^2

A^2 - x^2 = x^2

2x^2 = A^2

x = \frac{A}{\sqrt2}

so the position is 0.707 times of amplitude when KE and PE will be same

Part b)

KE of SHO at x = A/3

we can use the formula

KE = \frac{1}{2}m\omega^2(A^2 - x^2)

now to find the fraction of kinetic energy

f = \frac{KE}{TE} = \frac{A^2 - x^2}{A^2}

f = \frac{A^2 - (\frac{A}{3})^2}{A^2}

f_k = \frac{8}{9}

now since total energy is sum of KE and PE

so fraction of PE at the same position will be

f_{PE} = 1 - f_k

f_{PE} = 1 - (8/9) = 1/9

7 0
3 years ago
Little Billie has a mass of 25 kg. The acceleration of gravity on the moon is one-sixth of the value on Earth. What is Little Bi
sineoko [7]

Answer:

Mass is constant everywhere,

But weight is different,

If earth g = 10 then moon's is 1.6666667

Now billie's weight in moon is 41.6667

6 0
3 years ago
What are organs made of?
natita [175]
Organs are made of tissues

Tissues are made of cells though so it’s kinda a weird question lol
7 0
3 years ago
Read 2 more answers
Other questions:
  • A bug is on the rim of a 78 rev/min, 12 in. diameter record. The record moves from rest to its final angular speed in 2.67 s. Fi
    9·1 answer
  • What is a prokaryote cell/ eukaryote cell?
    5·1 answer
  • What would happen if the sun suddenly became a black hole without changing its mass?
    8·1 answer
  • 3730 watts equals about how many horsepower<br><br>A.5<br>B.10<br>C.20<br>D.30
    15·2 answers
  • A drive find difficulty to drive a car when the ground is cover with ice explain why?
    13·1 answer
  • A cyclist accelerates from 0 m/s to 8 m/s in 3 seconds. What is his acceleration ? Acceleration= (final velocity-initial velocit
    9·2 answers
  • How much gravitational force do two lead balls with a mass of 8 kilograms, the centers of mass of which are 17 cm apart, affect
    11·1 answer
  • A 20 ohm resistor has 210 volts measured<br> across it. What is the current?
    6·1 answer
  • What is Physics? How is Physics used in your everyday life? Give at least two examples and explain your answer. You need at leas
    8·1 answer
  • What direction would the north pole of a bar magnet point if you were to hang the bar magnet from a thin string?.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!