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Ad libitum [116K]
3 years ago
8

Which formula is used to find an object's acceleration? q= AT-AV q= AV+ AT q= AV/AI a= A1/AV ​

Physics
1 answer:
vekshin13 years ago
7 0

Answer:

a=\dfrac{v-u}{t}

Explanation:

The acceleration of an object is the rate of change of velocity. The mathematical expression for the acceleration of an object is given by :

a=\dfrac{v-u}{t}

Where

v and u are final and initial velocities

t is time

or we can write acceleration as :

a=\dfrac{\Delta v}{\Delta t}

Hence, this is the required solution.

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What would be the coefficient of performance if the refrigerator (operating between the same temperatures) was instead used as a
viktelen [127]

Complete Question

A certain refrigerator, operating between temperatures of -8.00°C and +23.2°C, can be approximated as a Carnot refrigerator.

What is the refrigerator's coefficient of performance? COP

(b) What If? What would be the coefficient of performance if the refrigerator (operating between the same temperatures) was instead used as a heat pump? COP

Answer:

a

 COP = 8.49

b

  COP_1 = 9.49  

Explanation:

From the question we are told that

     The lower operation temperature of refrigerator is  T_1 =  -8.00^oC =  265 \  K

     The upper operation temperature of the refrigerator is   T_2 =  23.2 ^oC =  296.2 \  K

Generally the refrigerators coefficient of performance is mathematically represented as

        COP =  \frac{T_1}{T_2 - T_1  }

=>     COP =  \frac{265}{296.2 - 265  }

=>     COP = 8.49

Generally if a refrigerator (operating between the same temperatures) was instead used as a heat pump , the coefficient of performance is mathematically represented as

            COP_1 =  \frac{T_2}{ T_2 - T_1}  

=>         COP_1 =  \frac{296.2}{ 296.2 - 265 }  

=>         COP_1 = 9.49  

8 0
4 years ago
If you were told an atom was an ion, you would know the atom must have a ______?
andreyandreev [35.5K]

Answer:

charge

Explanation:

7r0I and its etc. ,"!×_/;

3 0
3 years ago
How can you tell if something has a lot of kinetic energy? How can you tell if something only has a little bit of kinetic energy
dezoksy [38]

Based on the equation KE = 1/2(m)(v^2), Kinetic Energy can be measured based on velocity. If an object has a large velocity, it have a larger kinetic energy than if the velocity is small.

Hope this helps.

If this helped you, please vote me as brainliest!

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4 years ago
A situation that restricts something
Ostrovityanka [42]
Answer:

Laws

Explanation:
i don’t have one but i hope ur doing well during this quarantine
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3 years ago
What is the formula that represents the simplest ratio of the atoms in the components
Dafna1 [17]

Answer:

Empirical formula

<em>Hope</em><em> </em><em>it'll</em><em> </em><em>help</em><em>!</em>

<em>stay</em><em> </em><em>safe</em><em>:</em><em>)</em>

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4 years ago
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