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
Grace [21]
3 years ago
7

Air is cooled in a process with constant pressure of 150 kPa. Before the process begins, air has a specific volume of 0.062 m^3/

kg. The final specific volume is 0.027 m^3/kg. Find the specific work in the process.
Physics
1 answer:
Mama L [17]3 years ago
7 0

Answer:

The pressure is constant, and it is P = 150kpa.

the specific volumes are:

initial = 0.062 m^3/kg

final = 0.027 m^3/kg.

Then, the specific work can be written as:

W = \int\limits^{vf}_{vi} {Pdv} \, = P(vf - vi) = 150kPa*(0.0027 - 0.062)m^3/kg = -5.25 kPa*m^3/kg.

The fact that the work is negative, means that we need to apply work to the air in order to compress it.

Now, to write it in more common units we have that:

1 kPa*m^3 = 1000J.

-5.25 kPa*m^3/kg = -5250 J/kg.

You might be interested in
A baseball leaves a bat with a horizontal velocity of 20 m/s. In a time of 0.25 s, How far will it have traveled horizontally?
Maurinko [17]

Distance traveled by the ball is given by

distance = speed \times time

here we know that

speed = 20 m/s

times = 0.25 s

now we have

distance = 20 \times 0.25

distance = 5 m

so ball will travel 5 m distance in the given interval of time

6 0
3 years ago
How would you explain social control to someone who has no idea about our society?
Natasha2012 [34]
You can try to explain it by using a parallel between their and your societies .
7 0
3 years ago
A wave is traveling from one medium to another.If the wave is partially transmitted an partially reflected from the boundary,wha
Kamila [148]

Answer: the answer is C

Explanation:

3 0
3 years ago
How much force does it take to bring a 1,375 N car from rest to a velocity of 26 m/s in 6 seconds?
V125BC [204]

Explanation:

<u>Mass of car</u> = 137.5 kg

<u>Acceleration</u> = v - u / t = 26 - 0 / 6 = 4.33 m/sec^2

Force = m * a = 137.5 * 4.33 = 595.3 N

6 0
3 years ago
2.2.4 Quiz: Conservation of Energy
dexar [7]

Answer:

it is the judicious use of energy to prevent wastage

7 0
2 years ago
Other questions:
  • 6) K2O Use IUPAC nomenclature rules to properly identify this compound. A) potassium oxide B) dipotassium oxide C) potassium (I)
    10·1 answer
  • A toaster oven draws 300.0 watts of power. If it is plugged into an outlet with a voltage of 115 volts, what current is in the t
    14·1 answer
  • A wave with high amplitude _____.
    8·2 answers
  • Help !
    12·1 answer
  • A research study that proposed to describe the behaviors of high school teachers would be
    10·2 answers
  • When does a skydiver achieve terminal velocity?
    7·1 answer
  • A ball is thrown directly downward with an initial speed of 7.65 m/s froma height of 29.0 m. After what time interval does it st
    12·1 answer
  • The rotational kinetic energy term is often called the kinetic energy in the center of mass, while the translational kinetic ene
    5·2 answers
  • Please guys help me i will help u too ​
    14·2 answers
  • How are interference patterns made?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!