You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard X

Physics

Power

The heart of ...

Question

The heart of a man pumps 4000 c.c. of blood through the arteries per minute at a pressure of 130 mm of Hg. If the density of mercury is 13.6 $\times$ 10 $^{3}$ kgm $^{- 3}$ , what is the power of heart?

0.115 HP

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1.15 HP

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1.15 watt

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

2.30 watt

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 1.15 watt
Given
$V = 4000 c c$
$P = 130 m m H g$
$ρ_{H g} = 13.6 \times 10^{3} K g m^{- 3}$
$t = 1 m i n = 60 s$
Power is given by
$P = \frac{W}{t}$
$P = \frac{F . r}{t}$
$P = \frac{P A r}{t}$
$P = \frac{P V}{t}$
$P = \frac{(0.13) (13.6 \times 10^{3}) (9.8) (4000 \times 10^{- 6})}{60}$
$P = \frac{69.3}{60} = 1.15 W$

Suggest Corrections

Similar questions

Q. The heart of a man pumps

4000

cc of blood through the arteries per minute at a pressure of

130

mm Hg. If the density of mercury is

13.6 \times 10^{3} k g / m^{3}

, what is the power of heart ?

Q. The heart of a man pumps

5

litres of blood through the arteries per minute at a pressure of

150 m m

of mercury. If the density of mercury be

13.6 \times 10^{3} k g / m^{3}

and

g = 10 m / s^{2}

then the power of heart in watt is:

Q. The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150

m m

of mercury. If the density of mercury is

13.6 \times 10^{3} k g / m^{3}

and

g = 10 m / s^{2}

, then the power of heart in Watts is

Q. The heart of a man pumps

5 l i t r e s

of blood through the arteries per minute at a pressure of

150 m m

of mercury. If the density of mercury be

13.6 \times 10^{3} k g / m^{3}

and

g = 10 m / s^{2}

then the power of heart in watt is

The heart of a man pumps 5 litres of blood through the arteries per minute at a pressure of 150 $m m$ of mercury. If the density of mercury is $13.6 \times 10^{3} k g / m^{3}$ and $g = 10 m / s^{2}$ , then the power of heart in Watts is

Join BYJU'S Learning Program

The heart of a man pumps 4000 c.c. of blood through the arteries per minute at a pressure of 130 mm of Hg. If the density of mercury is 13.6 × 103 kgm−3, what is the power of heart?

The correct option is C 1.15 wattGivenV=4000ccP=130mmHgρHg=13.6×103Kgm−3t=1min=60sPower is given byP=WtP=F.rtP=PArtP=PVtP=(0.13)(13.6×103)(9.8)(4000×10−6)60P=69.360=1.15W

The heart of a man pumps 4000 c.c. of blood through the arteries per minute at a pressure of 130 mm of Hg. If the density of mercury is 13.6 $\times$ 10 $^{3}$ kgm $^{- 3}$ , what is the power of heart?