The heart of a man pumps 5 litre of blood through the arteries per minute at a pressure of 150 mm of mercury.If the density of mercury be 13.6 xx10^(3) kg//m^(3)and g = 10 m//s^(2) then the power of heart in watt is :

The heart of a man pumps 5 litre of blood through the arteries per min

1.	The heart of a man pumps 5 litre of blood through the arteries per minute at a pressure of 150 mm of mercury.If the density of mercury be 13.6 xx10^(3) kg//m^(3)and g = 10 m//s^(2) then the power of heart in watt is :
Answer» <html><body><p><<a href="https://interviewquestions.tuteehub.com/tag/p-588962" style="font-weight:bold;" target="_blank" title="Click to know more about P">P</a>>`1.50` <br/>`1.70`<br/>`2.35`<br/>`3.00`</p>Solution :Pumping of blood `(dv)/(dt) = (5mm)/(<a href="https://interviewquestions.tuteehub.com/tag/mm-1098795" style="font-weight:bold;" target="_blank" title="Click to know more about MM">MM</a>) =(5xx10^(-3))/60 (m^(3))/S` <br/> Pressure P = 150 mm of Hg `<a href="https://interviewquestions.tuteehub.com/tag/rarr-1175461" style="font-weight:bold;" target="_blank" title="Click to know more about RARR">RARR</a> <a href="https://interviewquestions.tuteehub.com/tag/h-1014193" style="font-weight:bold;" target="_blank" title="Click to know more about H">H</a> = 150 xx10^(-3) m ` <br/> Power of heart ` = P (dv)/(dt)` <br/> ` = rho gh (dv)/(dt)` <br/> ` = 13.6 xx10^(3) xx10 xx150 xx10^(-3) xx (5xx10^(-3))/60`<br/> Power of heart` = 1700 xx 10^(-3) = 1.70 `<a href="https://interviewquestions.tuteehub.com/tag/watt-1450279" style="font-weight:bold;" target="_blank" title="Click to know more about WATT">WATT</a> = 1.70 W</body></html>