Steam engine delivers 4.8X10]⁸j of work per minute and services 1.2

1.	Steam engine delivers 4.8X10]⁸j of work per minute and services 1.2 X10⁹] of heat per minute from its boilty. what is the percentage efficienty of the engine(a)20% b) 30% (c) 40% (d) 50%
Answer» TOTAL ENERGY =4.8×10^8J Used energy=1.2×10^9J We KNOW $\boxed{\sf \℅ Efficiency=\dfrac{Used\:Energy}{Total\:Energy}\times 100}$ $\\ \sf\longmapsto \℅Efficiency=\dfrac{1.2\times 10^8}{4.8\times 10^{9}}\times 100$ $\\ \sf\longmapsto \℅Efficiency=25\℅$

Steam engine delivers 4.8X10]⁸j of work per minute and services 1.2 X10⁹] of heat per minute from its boilty. what is the percentage efficienty of the engine(a)20% b) 30% (c) 40% (d) 50%

Answer»

TOTAL ENERGY =4.8×10^8J
Used energy=1.2×10^9J

We KNOW

$\boxed{\sf \℅ Efficiency=\dfrac{Used\:Energy}{Total\:Energy}\times 100}$

$\\ \sf\longmapsto \℅Efficiency=\dfrac{1.2\times 10^8}{4.8\times 10^{9}}\times 100$

$\\ \sf\longmapsto \℅Efficiency=25\℅$

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Steam engine delivers 4.8X10]⁸j of work per minute and services 1.2 X10⁹] of heat per minute from its boilty. what is the percentage efficienty of the engine(a)20% b) 30% (c) 40% (d) 50%​

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Steam engine delivers 4.8X10]⁸j of work per minute and services 1.2 X10⁹] of heat per minute from its boilty. what is the percentage efficienty of the engine(a)20% b) 30% (c) 40% (d) 50%