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katrin [286]
3 years ago
15

An arteriole has a radius of 25 μm and it is 1000 μm long. The viscosity of blood is 3 x 10-3 Pa s and its density is 1.055 g cm

-3 . Assume the arteriole is a right circular cylinder. A. Assuming laminar flow, what is the resistance of this arteriole?
Physics
1 answer:
timama [110]3 years ago
3 0

Answer: 1.955(10)^{13} \frac{Pa.s}{m^{3}}

Explanation:

This can be solved by the Poiseuille’s law for a laminar flow:

R=\frac{8 \eta L}{\pi r^{4}}

Where:

R is the resistance of the arteriole

\eta=3(10)^{-3} Pa.s is the viscosity of blood

L=1000 \mu m=1000(10)^{-6}m is the length of the arteriole

r=25 \mu m=25(10)^{-6}m is the radius of the arteriole

R=\frac{8 (3(10)^{-3} Pa.s)(1000(10)^{-6}m)}{\pi (25(10)^{-6}m)^{4}}

R=1.955(10)^{13} \frac{Pa.s}{m^{3}}

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Answer:

GDP growth rate is low

Political instability

Lack of technical skills due to low literacy rate

Pressure from neighboring countries

Explanation:

Gross Domestic Product growth rate of Pakistan is much lower than many developed countries. The GDP growth rate for Pakistan is nearly 5% which is not even stable and it variate from plans. Due to which Pakistan is unable to use its available resources to the fullest. Also one of major issue is political instability in the country. After the loss of great leader Quaid e Azam Pakistan has not faced any loyal leader till date.

Noise pollution, health issues, lack of provision of basic necessities to many are few other factors which give rise to poor law and order situation in the country. Lack of availability of heavy machinery and poor infrastructure has contributed to the country decline. There is abundance of natural resources in the country but due to these issues the country is unable to deal with the challenges.

The pressures from neighboring countries have made the situation even worst. The heavy loan burden is restricting the country from development. The covenants imposed by the lenders have limited the country's ability to use its natural resources and become stable.

5 0
3 years ago
At room temperature, an oxygen molecule, with mass of 5.31x10-26kg , typically has a kinetic energy of about 6.21x10-21J.How fas
alex41 [277]
<h2>Oxygen is moving at 483.63 m/s</h2>

Explanation:

Kinetic energy = 0.5 x Mass x Velocity²

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Substituting

        Kinetic energy = 0.5 x Mass x Velocity²

        6.21 x 10⁻²¹ = 0.5 x 5.31 x 10⁻²⁶ x Velocity²

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The thrust of the body is given by Archimedes' law

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as the body floats the submerged volume of the liquid is less than or equal to the volume of the block

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