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
hoa [83]
2 years ago
9

Describe what happens to the system inside of a refrigerator or freezer in terms of heat transfer, work, and conservation of ene

rgy. Confine yourself to time periods in which the door is closed.
A. Work is done on the system and heat is transferred from the system for a net decrease in internal energy.
B. Work is done on the system and heat is transferred into the system for a net increase in internal energy.
C. Work is done by the system and heat is transferred into the system for a net decrease in internal energy.
D. Work is done by the system and heat is transferred from the system for a net decrease in internal energy.
Physics
1 answer:
Over [174]2 years ago
6 0

Answer: A. Work is done on the system and heat is transferred from the system for a net decrease in internal energy.

Explanation:

A refrigerator is a device which dispenses heat from the close system to a warmer area or in the surrounding. By dispensing the heat the internal temperature of the refrigerator drops. The system of refrigerator violates the second law of thermodynamics. As it performs the work to cool the region instead of heating the region. The work is done on the system and the internal energy decreases and the heat energy is liberated to the surrounding area. A refrigerator is an open system.

You might be interested in
How is copyright infringement similar to plagiarism
Hoochie [10]

Answer:

Copyright infringement is using someone else's work without their permission amd plagiarism is claiming someone else's work as one's own

Explanation:

hope this helped you

8 0
3 years ago
Three resistors of 15.0 ohms, 30.0 ohms, and 60.0 ohms respectively are connected in parallel to an applied potential difference
AVprozaik [17]
A).  The drawing looks like a ladder with 4 rungs.
One rung is a 90-volt battery.
The other 3 rungs are the 3 resistors.

b).  The equivalent resistance is the reciprocal of (1/15 + 1/30 + 1/60).
That's the reciprocal of  7/60, or about 8.571... ohms. 

c).  I = V/R = 90 / 8.571...  =  10.5 Amperes.

d).  The 60-ohm resistor is connected directly across the battery.

Power = V²/R = (90²) / 60  =  135 watts.  Better COOL that baby !
4 0
3 years ago
What is magma composed of? Which compound is most abundant?
Nat2105 [25]
Magma is a molten and semi-molten rock mixture found under the surface of the earth. and i think silica is the most abundant. hope it helps.sorry if it's uncorrect. :)
3 0
3 years ago
Read 2 more answers
Two capacitors are connected in series and the combination is charged to 120V. There's 90.0V across one capacitor, whose capacit
IgorC [24]

Answer:

0.84μF

Explanation:

Charge is same through both the capacitors since they are in series. Total voltage is the sum of the voltages of the individual capacitors.. So voltage across the 2nd capacitor is 120- 90 =30 V.

Charge across first capacitor is Q = C₁V₁ = 90 x0.28 = 25.2μC

Therefore capacitance of 2nd capacitor =

C₂ = Q÷V₂ = 25.2÷30 = 0.84 μF

                                                     

4 0
3 years ago
Kiley went 5.7 km/h north and went 5.8km/h west. From start to finish,she went 8.1 km/h northwest which best describes her numbe
ladessa [460]
These values are all vectors since they all possess both magnitude and direction.
8 0
3 years ago
Other questions:
  • Devon was watching an old television show about people stranded on an island. One of the characters wanted to make an electric g
    7·1 answer
  • The total charge a battery can supply is rated in mA⋅h , the product of the current (in mA ) and the time (in h ) that the batte
    9·1 answer
  • A runner begins running at the beginning of 7th period and stops running at the end of the period. She runs at a pace of 10 km/h
    10·1 answer
  • A 2.0-kg mass (mA) and a 4.0-kg mass (mB) are connected to a lightweight cord that passes over a frictionless pulley. The pulley
    10·1 answer
  • Convert the following: 9.87 x 108s = _____ h
    12·2 answers
  • What is an object that allows some electrons to go through it
    9·2 answers
  • Draw, as best you can, what a velocity graph would look like as a function of time if the acceleration of the object is negative
    6·1 answer
  • Which pair of properties apply to both sound and electromagnetic waves?
    12·1 answer
  • How many basic locomotor skills are there?
    13·1 answer
  • Billy drops a ball from a height of 1 m. The ball bounces back to a height of 0.8 m, then
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!