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
Hunter-Best [27]
3 years ago
10

Air conditioners operate on the same principle as refrigerators. Consider an air conditioner that has 7.00 kg of refrigerant flo

wing through its circuit each cycle. The refrigerant enters the evaporator coils in phase equilibrium, with 54.0 % of its mass as liquid and the rest as vapor. It flows through the evaporator at a constant pressure and when it reaches the compressor 95% of its mass is vapor. In each cycle, how much heat Qc is absorbed by the refrigerant while it is in the evaporator? The heat of vaporization of the refrigerant is 1.50×105 J/kg
Physics
1 answer:
kozerog [31]3 years ago
4 0

Answer:

5.15J

Explanation:

First. 54% of the 7kg refrigerant is liquid

So we find mass of vapour at inlet generator

M1 = ( 1-0.54)*7= 3.2kg

At compressor mass of vapour will be

M2= 0.95*7= 6.7kg

So the Mass of vapour at exit generator is

M2-M1= 3.5kg

So to find heat absorbed by refrigerant in evaporation

Its using

Q= mh

°= 3.5x 1.50×10^5 J/kg

=5.15J

You might be interested in
Explain how a hydroelectric power plant converts energy stored in water into electricity
mart [117]
Hot water, as in very hot water, goes to steam with an enormous change in volume and pressure. This is capable of driving turbine blades, which in turn rotate enormous copper (eg) wired coils in enormous magnetic fields. This in turn produces electricity via electromagnetic induction and Fleming's right hand (I think it is) DYNAMO rule. That goes down miles and mile of v heavy conducting wire/cable as electricity.
4 0
3 years ago
What is the power generated by a 3.7 V cell phone battery that provides 2.0 A of current?
expeople1 [14]

Answer:

7.4 watt

Explanation:

Power= V× I

= 3.7×2.0= 7.40 watt

8 0
3 years ago
During a move, Jonas and Matías carry a 115kg safe to the third floor of a building, covering a height of 6.6m.
neonofarm [45]

Answer:

work is =7590joules

power = 23watts

4 0
3 years ago
Read 2 more answers
The vertical component of the projectile motion of an object depends on which of these? initial velocity or angel of trajectory
SVEN [57.7K]
It depends on both of them.

In fact, the projectile begins its motion with an initial velocity of v_0 and an angle of \alpha. On the y-axis (vertical direction), it is an accelerated motion with acceleration equal to -g (gravitational acceleration). The vertical velocity of the projectile at any time t is given by
v_y (t) = v_0 sin \alpha + gt
and as it can be seen, this depends on both initial velocity and angle.
3 0
3 years ago
From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 121.6 nanome
lina2011 [118]

Answer:

b) The star is moving away from us.

Explanation:

If an object moves toward us, the light waves it emits are compressed - the wavelength of the light will be shorter, making the light bluer. On the other hand, if an object moves away from us, the light waves are stretched, making it redder. If from laboratory measurements we know that a specific hydrogen spectral line appears at the wavelength of 121.6 nanometers (nm) and the spectrum of a particular star shows the same hydrogen line appearing at the wavelength of 121.8 nm, we can conclude that the star is moving away from npos, since the wavelength related to that star is more expanded.

7 0
3 years ago
Other questions:
  • A rectangular billboard 5 feet in height stands in a field so that its bottom is 6 feet above the ground. A nearsighted cow with
    5·2 answers
  • 1) What describes the unusually large release of plasma from the sun's corona?
    12·1 answer
  • Which of the following is not needed to make a model of the water cycle?
    8·1 answer
  • If a machine has 100% efficiency, it means that
    11·2 answers
  • What is true of systems in terms of their size and boundaries?
    12·2 answers
  • To dive far below the surface of the water, a submarine must be able to withstand enormous pressures. At a depth of 351 m, what
    10·1 answer
  • After a projectile is fired into the air, what is the acceleration in the x-direction? (Assume no air resistance.)
    7·2 answers
  • What is the direction of the electric field at the dot??
    7·1 answer
  • PLEASE help me with this science question.
    10·2 answers
  • The pressure on 200 mL of a gas is reduced from 80 kPa to 40 kPa. The final volume is Page
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!