Physics, asked by pradhan18, 1 year ago

please solve it problem is of her advance

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Answered by poweruffgirls11228
0

work done by heart will be given by ,W=PΔv

here P is pressure

Δv is the volume of blood being pumped

now,P =phg

h=height of the Hg column = 130 mm = 0.13 m

p=density of the Hg = 136 g/cm^3 = 13.6*10^3 kg/m^3

g = acceleration due to gravity = 9.8 m/s²

Δv = 4000 cc = 4l = 4×10^-3 m³

P=W/t = hpgΔv/t

where,t = 60 s

P=013 × 13.6 × 10³ × 9.8 × 4 × 10^-3 / 60

=69.30 / 60

=1.15 W

thus, power = 1.15 W

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