Homework Help: Physics

Posted by Ashley on Friday, February 8, 2013 at 6:37pm.

The blood speed in a normal segment of a horizontal artery is 0.166 m/s. An abnormal segment of the artery is narrowed down by an arteriosclerotic plaque to 1/5 of its normal cross-sectional area. What is the difference in blood pressure between the normal and constricted segments of the artery?

Physics - Damon, Friday, February 8, 2013 at 7:28pm
1/5 of the area ----> 5 times the speed
if the same amount passes each point in a second (continuity)

p + (1/2) rho v^2 = constant says Mr Bernoulli
P1 + (1/2) rho v^2 = P2 + (1/2) rho (5 v)^2

P1 - P2 = (1/2) rho (25-1)v^2
rho is approximately that of water 1000 kh/m^3
and v is .166 m/s
so
P1-P2 = 500 (24)(.166)^2
Physics - Ashley, Friday, February 8, 2013 at 7:39pm
Thanks! blood's density is 1060 kg/m^3 but it worked perfectly! and makes sence

Answer this Question

Related Questions

physics - A tennis player moves back and forth along the baseline while waiting ...
geometry - if a pointis onthe perpendicular bisector of a segment,then it is:A. ...
Math - Find the length of segment BC if segment BC is parallel to segment DE and...
physic - a pipe is 40% blocked the water is coming into the region is moving at ...
geometry - In triangle abc, point B is on segment ab, and point E is on segment ...
Physics - Blood flows through a section of a horizontal artery that is partially...
Geometry - Yes, I'm this desperate. I just have problems with coming up with...
geometry - Given: segment DE is perpendicular to segment AB and segment AD is ...
Geometry - Please write a paragraph proof for this statement. Point Y is the ...
Geometry - Please write a paragraph proof for this statement. 30: Point Y is ...

For Further Reading

First Name:
School Subject:
Answer: