Home
Class 11
PHYSICS
The heart of a man pumps 5 liters of blo...

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

A

2.35

B

3

C

1.5

D

1.7

Text Solution

Verified by Experts

The correct Answer is:
D
Pumping rate of the heart `((dV)/(dt)) =(5xx10^3)/(60) m^3 //"sec"`
Power = `P(dV)/(dt)=rho g h xx(dV)/(dt)`
`=(13.6xx10^3xx10xx0.15xx5xx10^(-3))/(60)` = 1.7 Watt.
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    ERRORLESS|Exercise ASSERTION AND REASON|23 Videos

  • FLUID MECHANICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS(FLUID FLOW)|51 Videos

  • ELASTICITY

    ERRORLESS|Exercise ASSERTION & REASON |10 Videos

  • FRICTION

    ERRORLESS|Exercise ASSERTION & REASON |8 Videos

Similar Questions

Explore conceptually related problems

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

The average human heart forces four litre of blood per minute through arteries a pressure of 125 mm. If the density of blood is 1.03xx10^(3)kg//m^(3) then the power of heart is :

The power of a heart which pumps 5 xx 10^(3) cc of blood per minute at a pressure of 120 mm of meteury (g = 10 ms^(-2) and density of Hg = 13.6 xx 10^(3) km^(3)) is

Calculate the kinetic energy per unit volume of a gas at a pressure of 10mm of Hg . (Density of Hg=13.6xx10^(3)kgm^(-3) and g=9.8ms^(-2) )

The human heart discharges 75 cc of blood through the arteries at each heart against an average presure of 10cm of mercury. Assuming that the pulse frequency is 72 per minute , the rate of working of heart in watt is (Density of mercury = 13.6 gm//cc and g = 9.8 m//s^(2)) .

The human heart forces 4000cm^(3) of blood per minute through the arteries under pressure of 130mm . The density of blood is 1.03g//c c . What is the horse power of the heart ?

Density of mercury is 13.6 g cm^(-3) . Its density in kg m^(-3) is

The column of mercury in a barometer is 76 cm Hg. Calculate the atmosphere pressure I the density of mercury =13600kgm^(-3) (Take g=10ms^(-2) )

76 cm of mercury column is a measure of atmospherice pressure. Express it is N//m^2 Given density of mercury is 13.6xx10^3 kg//m^3