Find us at · 2020. 9. 17. · (Density of hydrogen = 0.089kg/m3 and density of air is I .29...
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Find us at · 2020. 9. 17. · (Density of hydrogen = 0.089kg/m3 and density of air is I .29 kg/m3) (5 marks) 4. (a) An engine can pump 30000 litres of water to a vertical height