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
alekssr [168]
3 years ago
11

Two Carnot air conditioners, A and B, are removing heat from different rooms. The outside temperature is the same for both rooms

, 314 K. The room serviced by unit A is kept at a temperature of 292 K, while the room serviced by unit B is kept at 298 K. The heat removed from either room is 4430 J. For both units, find (a), (b) the magnitude of the work required and (c), (d) the magnitude of the heat deposited outside for A and B conditioners respectively
Physics
1 answer:
lakkis [162]3 years ago
4 0

Answer:

(a)  333.77 J

(b) 237.85 J

(c) 4763.77 J

(d) 4667.85 J

Explanation:

Temperature of source, TH = 314 K

Temperature of A, Tc = 292 K

Temperature of B, Tc' = 298 K

heat taken out, Qc = 4430 J

Let the heat deposited outside is QH and QH' by A and B respectively.

\frac{Q_H}{Q_c}=\frac{T_H}{T_c}\\\\Q_H = \frac{4430\times314}{292}=4763.77 J

Now

\frac{Q_H'}{Q_c}=\frac{T_H}{T_c'}\\\\Q_H' = \frac{4430\times314}{298}=4667.85 J

(a) Work done for A

W = QH - QC = 4763.77 - 4430 = 333.77 J

(b) Work done for B

W' = QH' - Qc = 4667.85 - 4430 = 237.85 J

(c) QH = 4763.77 J

(d) QH' = 4667.85 J

You might be interested in
Identify the physical mechanism that causes turbulent thermal conductivity.
myrzilka [38]

Answer:

Option A is correct.

Eddies due to enhanced mixing of fluid

Explanation:

Turbulent thermal conductivity is thermal conductivity that arises from the turbulent flow of fluids. It comes into play when a particukar fluid moves into turbulent regiom of flow where flow is no longer orderly and streamlines aren't discernable with the fluid layers all warping into one another forming vortices.

It is represented as K and is shown mathematically through the heat flux at turbulent flow

q = vCρT' = - K (∂T/∂y)

where

K = turbulent thermal conductivity

T' = the eddy temperature relative to the mean value,

C = Heat capacity the fluid

q = the rate of thermal energy transport by turbulent eddies.

The physical mechanism that cause turbulent thermal conductivity are similar to the causes of turbulent flow of fluids.

This includes sharp changes in fluid pressure and velocity of flow which is evident in eddies that come about in the enhanced mixing of fluids.

Hope this Helps!!!

5 0
3 years ago
An electron moves along the z-axis with vz=4.5×10^7m/s. As it passes the origin, what are the strength and direction of the magn
Hitman42 [59]
This answer of the strength and directions of the magnetic field is a
5 0
3 years ago
Can you hit the monkey at a fast speed with gravity on?
Ierofanga [76]

Answer:

It depends how far the monkey is and how hard you throw the object because If the monkey is close, then you will most likely hit it

7 0
2 years ago
Which statement about the properties of matter is true? *25*
mojhsa [17]

Answer:

A possible answer would be that chemical properties depend on phisical properties if and if only the phisical properties depend on the chemical ones ( see the laws of thermodinamics)

3 0
3 years ago
A chemical change means a new substance with new properties was<br> formed.<br> True<br> False
Contact [7]

Answer:

False

Explanation:

4 0
3 years ago
Other questions:
  • A 200-g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.250 s. The total energy
    13·1 answer
  • Your license can be suspended for 90 days if you accumulate
    5·1 answer
  • 8. Humans need oxygen to break down food in order to provide energy for cells. The oxygen needed for this process is delivered b
    8·2 answers
  • Alternating current is normally produced by a
    8·1 answer
  • The laboratory is based on the assumption that at the two points of the motion being considered, the mass is at rest. What kind
    13·1 answer
  • Please help me out please
    5·1 answer
  • Does the distance a person kicks a soccer ball
    12·1 answer
  • A gymnast jumps straight up, with her center of mass moving at 4.73 m/s as she leaves the ground. How high above this point is h
    5·1 answer
  • In flight, a rocket is subjected to four forces; weight, thrust, lift, and drag. Forces are vector quantities that have both a m
    6·2 answers
  • What is the full meaning of ROYGBIV?​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!