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
frutty [35]
2 years ago
12

Water initially at 200 kPa and 300°C is contained in a piston–cylinder device fitted with stops. The water is allowed to cool at

constant pressure until it exists as a saturated vapor and the piston rests on the stops. Then the water continues to cool until the pressure is 100 kPa
On the T−v diagram, sketch, with respect to the saturation lines, the process curves passing through the initial, intermediate, and final states of the water. Label the T, P and v values for end states on the process curves. Find the overall change in internal energy between the initial and final states per unit mass of water.
Physics
1 answer:
netineya [11]2 years ago
3 0

Answer:

Δu=1300kJ/kg  

Explanation:

Energy at the initial state

p_{1}=200kPa\\t_{1}=300^{o}\\u_{1}=2808.8kJ/kg(tableA-5)

Is saturated vapor at initial pressure we have

p_{2}=200kPa\\x_{2}=1(stat.vapor)\\v_{2}=0.8858m^3/kg(tableA-5)

Process 2-3 is a constant volume process

p_{3}=100kPa\\v_{3}=v_{2}=0.8858m^{3}/kg\\u_{3}=1508.6kJ/kg(tableA-5)

The overall in internal energy

Δu=u₁-u₃

We replace the values in equation

Δu=u₁-u₃

=2808.8kJ/kg-1508.6kJ/kg\\=1300kJ/kg

Δu=1300kJ/kg  

You might be interested in
(1) Explain : Market and its characteristics.​
AlekseyPX

Answer:

market is a place where we sell or buy things ( goods)

it's characteristics are

buying and selling goods

perfect competitions

market doesn't refer only a fix place

6 0
3 years ago
In 6–8 sentences, write a summary of what you learned from this activity. Include an explanation of what causes the spectral shi
QveST [7]

Answer :First part is what you learned so write what you learned then the other parts is The evidence that the universe is expanding comes with something called the red shift of light. Light travels to Earth from other galaxies. As the light from that galaxy gets closer to Earth, the distance between Earth and the galaxy increases, which causes the wavelength of that light to get longer.

Explanation:

7 0
10 months ago
Which two of the following actions would
Ganezh [65]
Answer is d using a heavier string
5 0
2 years ago
You are holding a block of wood with dimensions 3 cm x 6 cm x 9 cm on the palm of your hand. Which side must be touching your ha
Mariana [72]
Force is all the same, but pressure will be higher on 3cm
3 0
3 years ago
In a police ballistics test, a 10.0-g bullet moving at 300 m/s is fired into a 1.00-kg block at rest. The bullet goes through th
natta225 [31]

Answer:

Speed of block after the bullet emerges = 1.5 m/s

Explanation:

Here momentum is conserved.

Initial momentum = Final momentum.

Mass of bullet = 10 g = 0.01 kg

Initial Velocity of bullet = 300 m/s

Mass of block = 1 kg

Initial Velocity of block = 0 m/s

Final Velocity of bullet = 50% of initial velocity. = 150 m/s

We need to find final velocity of block. Let it be v

We have

Initial momentum = 0.01 x 300 + 1 x 0 = 3 kg m/s

Final momentum = 0.01 x 150 + 1 x v = 1.5 + v

Equating

3 = 1.5 + v

v = 1.5 m/s

Speed of block after the bullet emerges = 1.5 m/s

3 0
3 years ago
Other questions:
  • An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity
    7·1 answer
  • Order the sounds made by these sources from highest to lowest pitch.
    13·1 answer
  • Which substances resist pH changes? <br> Acids<br> Hydrogen ions<br> Buffers<br> Bases
    7·2 answers
  • As a projectile falls, what happens to the components of velocity?
    6·1 answer
  • What is exothermic .Is it a reaction?
    13·2 answers
  • How does the mass of and distance between the Sun and the Earth impact the number of days in a year?
    8·1 answer
  • What can waves be transmitted by? How do you know?
    7·1 answer
  • A student creates a model by placing raisins in bread dough and allowing the dough to rise for several hours. The student sketch
    15·1 answer
  • Why do we use atomic models?
    8·1 answer
  • A mass m is attached to an ideal massless spring. When this system is set in motion with amplitude a, it has a period t. What is
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!