_____ heat transfer occurs due to rapid collisions of atoms in a solid.
1 answer:
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Answer:
3.15m³
Explanation:
To solve this problem, let us first find the mass of the petrol from the given dimension.
Mass = density x volume
Volume of petrol = 4.2m³
Density of petrol = 0.3kgm⁻³
Mass of petrol = 4.2 x 0.3 = 1.26kg
So;
We can now find the volume of the alcohol
Volume of alcohol =
Mass of alcohol = 1.26kg
Density of alcohol = 0.4kgm⁻³
Volume of alcohol = = 3.15m³
The work output of the procedure is given as,
Substitute the known values,
Thus, the work output is 180 J.
The work input of the procedure is,
Substitute the known values,
Thus, the work input is 250 J.
The efficiency of the person is given as,
Substitute the known values,
Thus, the efficiency of person is 0.72 or 72%.