1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gnoma [55]
3 years ago
10

Suppose a blood vessel's radius is decreased to 87% of its original value by plaque deposits and the body compensates by increas

ing the pressure difference along the vessel to keep the flow rate constant.
By what factor must the pressure difference increase?

Physics
1 answer:
dexar [7]3 years ago
3 0

Answer:

The pressure difference will increase by the factor of 1.75

Explanation:

For constant flow rate, coefficient of viscosity, length of the vessel and the pressure difference is inversely proportional to the fourth power of the radius of the blood vessel

Apply the principle of Poiseuille’s law.

Q = (P2 - P1)/R

Pls check the attached file for step by step solution of the question. It is submitted in this way as typing the equation may not be explanatory.

You might be interested in
Consider an object moving in the plane whose location at time t seconds is given by the parametric equations: x(t)=5cos(πt) y(t)
ololo11 [35]

Answer:

a)

a = 1/5

b = 1/3

b)

x(1/3) = 2.500

y(1/3) = 2.598

c)

x'(t) = -5π sin(π t)

d)

x'(1/3) = -13.603

Explanation:

Hi!

a)

We can notice that

x(t)/5 = cos(πt)

y(t)/3 = sin(πt)

Therefore:

( x(t) / 5 )^2 + ( y(t) / 3 )^2 = cos^2(πt) + sin^2(πt) = 1

That is:

a = 1/5

b = 1/3

b)

At t=1/3

x(1/3) = 5 cos(π/3)

y(1/3) = 3 sin(π/3)

But

cos(π/3) = 1/2 = 0.5

sin(π/3) = √3 / 2 = 0.866

That is:

x(1/3) = 2.5

y(1/3) = 2.598

c)

The horizontal velocity is:

x'(t) = -5π sin(π t)

d)

at time t =1/3

x'(1/3) = -5π sin(π/3) = -13.603

7 0
3 years ago
A car travels 20 km South, then turns and travels 30 km East? What is the total displacement?
Ne4ueva [31]

Answer:

Explanation:36.05 km

Given

First car travels r_1=20\ km South

then turns and travels r_2=30\ km east

Suppose south as negative y axis and east as positive x axis

So, r_1=-20\hat{j}

r_2=30\hat{i}

Displacement is the shortest between initial and final point

Dispalcement=r=r_1+r_2

Displacement=-20\hat{j}+30\hat{i}

Displacement=30\hat{i}-20\hat{j}

Magnitude =\sqrt{30^2+(-20)^2}

Magnitude=36.05\ km

4 0
3 years ago
Diffraction occurs when waves _____ after passing through an opening
saw5 [17]
The answer to your question is A
8 0
3 years ago
Read 2 more answers
A Styrofoam ball has just been shot straight up. Air resistance is not negligible (free body diagram)
timofeeve [1]

In a free body diagram for an object projected upwards;

  • the acceleration due to gravity on the object is always directed downwards.
  • the velocity of the object is always in the direction of the object's motion.

An object projected upwards is subjected to influence of acceleration due to gravity.

As the object accelerates upwards, its velocity decreases until the object reaches maximum height where its velocity becomes zero and as the object descends its velocity increases, which eventually becomes maximum before the object hits the ground.

To construct a free body diagram for this motion, we consider the following;

  • the acceleration due to gravity on the object is always directed downwards
  • the velocity of the object is always in the direction of the object's motion.

<u>For instance:</u>

upward motion for velocity  ↑        downward motion for velocity  ↓

                                              ↑                                                            ↓

                                              ↑                                                            ↓

acceleration due to gravity ↓

                                             ↓

                                             ↓

Learn more here: brainly.com/question/13235430

5 0
3 years ago
A 4.0-n puck is traveling at 3.0 m/s. it strikes an 8.0-n puck, which is stationary. the two pucks stick together. their common
Natalka [10]
<span>1.0 m/s Momentum = mass x velocity Total Momentum before any collision = total momentum afterwards 4.0 x 3.0= 12 :g x momentum before (x g because using weight) Afterwards, if the velocity of the two joined is v then we get: 'momentum x g'=12v so 12v=12 so v=1m/s</span>
3 0
3 years ago
Other questions:
  • A satellite circles the moon at a distance above its surface equal to 2 times the radius of the moon. The acceleration due to gr
    5·2 answers
  • A small particle starts from rest from the origin of an xy-coordinate system and travels in the xy-plane. Its acceleration in th
    12·2 answers
  • How many times bigger is the earth than the moon?
    5·1 answer
  • If the moon disappeared what effect would this have on the earths tides
    5·2 answers
  • Can some one pls give me the knowns and unknowns , formula and answer for question 4,5,6
    12·1 answer
  • After heating a 10.00 g sample of potassium chlorate, a student obtains an amount of oxygen calculated to be 3.90 g. Theoretical
    6·1 answer
  • You are walking around your town. First you walk north from your startingposition and walk for 2 hours at 1 km/h. Then, you walk
    15·1 answer
  • A supertrain with a proper length of 100 m travels at a speed of 0.950c as it passes through a tunnel having a proper length of
    6·1 answer
  • A. 1 and 2 &gt; 3 and 4 = 4 and 5
    13·1 answer
  • What is the primary way the metamorphic rock formed
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!