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IceJOKER [234]
3 years ago
6

LAST ONE! ASAP PLEASE

Physics
2 answers:
Pie3 years ago
6 0

Answer:

Explanation:

Step 1: We make the assumption that 160 is 100% since it is our output value.

Step 2: We next represent the value we seek with x.

Step 3: From step 1, it follows that 100%=160

Step 4: In the same vein, = x%=140​.

Step 5: This gives us a pair of simple equations:

100%=160(1)​.

x%=140(2)​.

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS

(left hand side) of both equations have the same unit (%); we have

100% / x% = 160 / 140

Step 7: Taking the inverse (or reciprocal) of both sides yields

x% / 100% = 140 / 160

x% = 87.5%

therefore, 140 is 87.5% of 160

Doss [256]3 years ago
4 0

Answer:

There are so many questions which one you don't know

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An engine draws energy from a hot reservoir with a temperature of 1250 K and exhausts energy into a cold reservoir with a temper
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Answer:

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Explanation:

From the question we are told that

    The temperature of the hot reservoir is  T_h = 1250 \ K

      The temperature of the cold reservoir  is  T_c  =  322 \ K

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      P  =  \frac{W}{t}

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substituting values

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         \eta_c  =  1 - \frac{322}{1250}

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        \eta _a  =   \frac{W}{E_h}

substituting values

         \eta _a  =  \frac{63000}{1.37*10^{5}}

         \eta _a  = 0.46

     

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