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Agata [3.3K]
3 years ago
6

Definition of mass definition of density definition of physical properties

Physics
1 answer:
butalik [34]3 years ago
6 0

Answer:

Mass of a body is define as the total quantity of matter contained in it .

Density is the mass per unit volume in any object .

A physical properties is an any property that is measurable , whose value describe a state of a physical system

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Wind erosion can be reduced by _____.
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A heat engine performs (245 + A) J of work in each cycle while also delivering (142 + B) J of heat to the cold reservoir. Find t
Ganezh [65]

Answer:

The value is \eta  =  54.4 \%

Explanation:

From the question we are told that

    The work input is  W = ( 245 + A ) \  J

     The heat delivered is Q =  (142 + B) \  J

      The value of A is  A =  14

        The value of B  is  B  = 72

Generally the efficiency of the heat engine is mathematically represented as

          \eta  =  \frac{W}{Q_t}

Here  Q_t is the total out energy produce by the heat engine and this is mathematically represented as

           Q_t= Q + W

=>         Q_t=  245 + A + 142 + B

=>         Q_t=  390 + A+B

So

               \eta  =  \frac{245 + A }{390 + A+ B}

=>          \eta  =  0.544

=>          \eta  =  0.544 *100

=>          \eta  =  54.4 \%

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Answer:

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Hence:

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