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2 years ago

The density of blood is 1.05 kg/m3, find the mass of a bag of blood for a transfusion, if the volume is 1.5 m3.

2 answers:

6 0

(1.5 m^3) • (1.05 kg/m^3) = 1.575 kg. That's quite a bag you've got there ! 1 m^3 is like 264 gallons of blood. Hope the poor patient survives the transfusion. Also, the actual density of blood is around 1.05 g/cm^3, or 1050 kg/m^3. The blood they're giving the guy in this question is about 18% less dense than the AIR in his hospital room, and they're pumping 264 gallons of it into him. Maybe THAT'S his whole problem.

jeyben [28]2 years ago

3 0

Answer:

mass =1.575 kg: mass of a blood bag

Explanation:

Conceptual analysis

We apply the formula to calculate the density:

ρ=m/V Formula (1)

Where:

ρ:Density in kg/m³

mass: mass in kg

V= Volume in m³

Unknown data

ρ=1.05 kg/m³

V= 1.5 m³

Problem developmentTo calculate the mass we replace the known data in the formula (1)

$1.05 \frac{kg}{m^{3} } =\frac{mass}{1.5m^{3} }$

1.05 $\frac{kg}{m^{3} }$ *1.5 m³= mass

mass =1.575 kg: mass of a blood bag

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Answer:

A. 243 N

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This friction force that opposes the motion of the oak chest across the oak surface will be equal and opposite to that exerted by the woman.

First find the normal force which is the force that would point directly upwards to support weight of the block.

Normal force, N= mg where m is the mass of the chest and g is the acceleration due to gravity.

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2 years ago