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
Sedaia [141]
3 years ago
8

Steam is accelerated by a nozzle steadily from zero velocity to a velocity of 280 m/s at a rate of 2.5 kg/s. If the temperature

and pressure of the steam at the nozzle exit are 400°C and 2 MPa, determine the exit area of the nozzle. Solve using appropriate software.
Physics
1 answer:
katrin2010 [14]3 years ago
8 0

Answer:

The exit area of the nozzle is 0.000861 m².

Explanation:

Given that,

Velocity = 280 m/s

Rate = 2.5 kg/s

Pressure = 2 MPa

Temperature = 400°C

We need to calculate the volume

Using equation of ideal gas

PV=RT

V=\dfrac{RT}{P}

Put the value into the formula

V=\dfrac{0.287\times673}{2\times10^{3}}

V=0.0965\ m^3/kg

We need to calculate the exit area of the nozzle

Using equation of continuity

\dfrac{dm}{dt}=\dfrac{A_{1}v}{V}

A=\dfrac{V\times\dfrac{dm}{dt}}{v}

Put the value into the formula

A=\dfrac{0.0965\times2.5}{280}

A=0.000861\ m^2

Hence, The exit area of the nozzle is 0.000861 m².

You might be interested in
Did I do these questions correctly?
Elena L [17]
For number 11, you should say that there is more pollution and fossil fuels being burned.
8 0
2 years ago
a ball is projected horizontally with a velocity of 5 m per second from the top of a building 19.6 m high how long will the ball
zepelin [54]

Answer:

1.98s

Explanation:

The time taken to hit the ground is given by

h=ut+ 1/2 at^2

but u =0

so we have

h=1/2at^2

making t the subject

t=√2h/g

√2×19.6/10

1.98s

8 0
2 years ago
As a space shuttle moves through the dilute ionized gas of Earth's ionosphere, the shuttle's potential is typically changed by -
postnew [5]

Answer:

-2.3 × 10^-9 Coulombs(C).

Explanation:

So, we are given the following data or information or parameters that is going to help us to solve the problem effectively and efficiently;

=> " the shuttle's potential is typically changed by -1.4 V during one revolution. "

=> " Assuming the shuttle is a conducting sphere of radius 15 m".

So, in order to estimate the value for the charge we will be making use of the equation below:

Charge, C =( radius × voltage or potential difference) ÷ Coulomb's law constant.

Note that the value of Coulomb's law constant = 9 x 10^9 Nm^2 / C^2.

So, charge = { 15 × (- 1.4)} / 9 x 10^9 Nm^2 / C^2.

= -2.3 × 10^-9 Coulombs(C).

4 0
3 years ago
The candle burning
vodka [1.7K]

Answer:

A

Explanation:

its oxygen I hope i am correct have a great day.

3 0
2 years ago
What is loess?
Y_Kistochka [10]

A loess is...

<em>A clastic, silt-sized sediment that is formed by the accumulation of wind-blown dust. 10% of the earth's area is covered by loess or similar deposits. </em>

<em>Hope this helps you to find your answer and if you ever need help with anything else I would be happy to help,</em>

~QueenBeauty666~

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which unit of speed will you use to express the speed of the following. 1. Aeroplane. 2.tortoise. 3.ant 4.horse​
    13·1 answer
  • 2. An ammeter registers 2.5 A of current in a wire that is connected to a 9.0 V
    11·1 answer
  • In which case does viscosity play a dominant role? Case A: a typical bacterium (size ~ 1 mm1 mm and velocity ~ 20 mm/s20 mm/s) i
    13·1 answer
  • Three point charges are located in the x-y plane. q1 = -52.1 nC at (0.00, +3.10 cm), q2 = +25.4 nC at (-4.70 cm, 0.00) and q3 =
    6·1 answer
  • (PLEASE HELP) Which of the following is the name for two or more types of atoms that are chemically bonded together?
    9·2 answers
  • What type of force is needed to accelerate an object?<br> What direction will the object accelerate?
    6·2 answers
  • Why is energy transferred from the substance to the surroundings when a substance freezes
    5·1 answer
  • Consumers influence how goods and services are made by _____. a.selling organic products, such as fruits
    6·2 answers
  • When is the best time to take a resting heart break
    6·1 answer
  • Dos cargas muy pequeñas de masas iguales m
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!