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
Gwar [14]
3 years ago
11

The buildup of plaque on the walls of an artery may decrease its diameter from 1.1cm to 0.75 cm. If the speed of blood flow is 1

5 cm/s, before reaching the region of plaque buildup, find the speed (in cm/s) of the blood flow. [Express the answer in ONE decimal place]
Physics
1 answer:
34kurt3 years ago
3 0

Answer:

v₂ = 32.4 cm/s

Explanation:

From the continuity equation it is clear that:

Volume Flow Rate Before Plaque = Volume Flow Rate In Plaque

Q₁ = Q₂

A₁v₁ = A₂v₂

where,

A₁ = Area of artery before plaque build up = πd²/4 = π(1.1 cm)²/4 = 0.95 cm²

A₂ = Area of artery with plaque build up = πd²/4 = π(0.75 cm)²/4 = 0.44 cm²

v₁ = velocity of blood flow in artery before plaque region = 15 cm/s

v₂ = velocity of blood in artery in plaque region = ?

Therefore,

(0.95 cm²)(15 cm/s) = (0.44 cm²)(v₂)

v₂ = (14.25 cm³/s)/(0.44 cm²)

<u>v₂ = 32.4 cm/s</u>

You might be interested in
A lens uses what process to deflect light rays passing through it? a. reflection b. refraction c. absorption d. transparency
USPshnik [31]
A lens uses the process of refraction to deflect light rays from passing through it.
8 0
3 years ago
Read 2 more answers
Calculate the index of refraction for a medium in which the speed of light is 1.239 ✕ 108 m/s. (The speed of light in vacuum is
True [87]

Answer:

Refractive index, n = 2.419

Explanation:

It is given that,

Speed of light in the medium, v=1.239\times 10^8\ m/s

Speed of light in the vacuum, c=2.998\times 10^8\ m/s

Let n is the index of refraction for a medium. We know that the refractive index for any medium is equal to the ratio of speed of light in vacuum to the speed of light in medium. It can be written as :

n=\dfrac{c}{v}

n=\dfrac{2.998\times 10^8\ m/s}{1.239\times 10^8\ m/s}

n = 2.419

So, the index of refraction for a medium is 2.419. Hence, this is the required solution.

3 0
3 years ago
HELP!!!! PLEASE (and there will be more)
Alexus [3.1K]

Answer:

i wanna say tranverse if not surface

Explanation:

6 0
2 years ago
Read 2 more answers
a student pushes a box with a total mass of 50kg. what is the net force on the box if it accelerates 1.5 m/s^2?
Zielflug [23.3K]
F=mass times acceleration so multiple 50 by 1.5 and u get 75

5 0
3 years ago
________ is a force acting through distance.
Andreas93 [3]
High school???
No way
It's work.
8 0
3 years ago
Other questions:
  • What is the minimum thickness of coating which should be placed on a lens in order to minimize reflection of 566 nm light? The i
    10·1 answer
  • Particle a has twice the charge of nearby particle
    12·1 answer
  • You are instructed to remove the appendicular skeleton of a cadaver. To accomplish this goal, you would
    9·1 answer
  • What is floatation?​
    15·2 answers
  • The deepest point in any ocean is in the Mariana Trench, which is about 11 km deep, in the Pacific. The pressure at this depth i
    14·1 answer
  • Which type of path do planets follow around the sun?
    5·2 answers
  • Please why does a simple pendulum graph fail to pass through the origin ?​
    6·2 answers
  • If the period of the wave is 0.34 seconds what would be the frequency of the wave
    14·1 answer
  • Tiny mass of 67kg and tubby mass of 83 kg are now on the opposite ends of a see saw and are both 1.4m from the balance point whe
    9·1 answer
  • An object with a mass of m = 122 kg is suspended by a rope from the end of a uniform boom with a mass of M = 74.9 kg and a lengt
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!