25 litres of fuel exerts a pressure of 10KPa. If a further 125 litres is added, the pressure will now be
- 50 kPa
- 60 kPa
- 40 kPa
Explanation
With the same container cross-section, the liquid pressure is proportional to the height, which is proportional to the total volume. Going from 25 litres to 25 + 125 = 150 litres multiplies the volume by six, so the pressure rises sixfold from 10 kPa to 60 kPa.
romeshkunder asking:
how
Community Comments (1)
D
dimky Posts: 514 04.09.2013 / 11:46
Total fuel = 25 + 125 = 150 litres.
Initial volume of fuel (25 litres) is 1/6 of 150.
So initial pressure (10kpa) is 1/6 of what we looking for.
So pressure = 10 * 6 = 60 kpa
Initial volume of fuel (25 litres) is 1/6 of 150.
So initial pressure (10kpa) is 1/6 of what we looking for.
So pressure = 10 * 6 = 60 kpa
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