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
Lady_Fox [76]
3 years ago
11

a ultrasonic wave at 8x10^4 Hz is emitted into a vien where the speed of sound in blood is 1570 m/s. the wave reflects off the r

ed blood cells moving towards the stationary receiver, if the frequency of the4 returning signal is 8.002x10^4 Hz, what is the speed of blood flow?
Physics
1 answer:
Aneli [31]3 years ago
3 0

Answer: 0.392 m/s

Explanation:

The Doppler shift equation is:

f'=\frac{V+V_{o}}{V-V_{s}} f

Where:

f=8(10)^{4} Hz is the actual frequency of the sound wave

f'=8.002(10)^{4} Hz is the "observed" frequency

V=1570 m/s is the speed of sound

V_{o}=0 m/s is the velocity of the observer, which is stationary

V_{s} is the velocity of the source, which are the red blood cells

Isolating V_{s}:

V_{s}=\frac{V(f'-f)}{f'}

V_{s}=\frac{1570 m/s(8.002(10)^{4} Hz-8(10)^{4} Hz)}{8.002(10)^{4} Hz}

Finally:

V_{s}=0.392 m/s

You might be interested in
What are the properties of glass in relation to microscopy?
Alekssandra [29.7K]

Answer:

<h3>Following are the properties and characteristics of the glass.</h3>

<h3>Hardness and Brittleness. It is a hard material as it has great impact resistance against applied load.</h3>

  • Weather Resistance.
  • Insulation.
  • Chemical Resistance.
  • Colour and Shape Varieties.
  • Transparency.
  • Fire Resistant Glazing.
  • Property Modification.
7 0
2 years ago
Read 2 more answers
Which moon has a thick atmosphere made mostly of nitrogen?
Delicious77 [7]
the answer is Titan
explanation: titan fascinates scientists because of its thick atmosphere — which is mostly made of nitrogen gas
7 0
2 years ago
Which of the following is NOT a characteristic of an inner planet?. . A.. rocky. . B.. solid surface. . C.. near the sun. . D..
sveticcg [70]

Being made mostly of gas is NOT a characteristic of an inner planet. The correct answer between all the choices given is the last choice or letter D. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

3 0
3 years ago
Read 2 more answers
A divot is created _____.
STatiana [176]
I think it is when shot scrapes off the top of the turf

4 0
3 years ago
Read 2 more answers
A phonograph record 0.15 m in its radius rotates 18 times per 90 seconds what is the frequency?
ioda

Answer:

The frequency of the phonograph record is 0.2 Hz

Explanation:

The frequency of an object moving in uniform circular motion is the number of completed cycles the object makes in a specified time period

The given parameters of the phonograph record are;

The radius of the record = 0.15 m

The number of times the phonograph record rotates, n = 18 times

The time it takes the phonograph record to rotate the 18 times, t = 90 seconds

The frequency of the phonograph record, f = (The number of times the phonograph record rotates) ÷ (The time it takes the phonograph record to rotate the 18 times)

∴ The frequency of the phonograph record, f = n/t = 18/(90 s) = 0.2 Hz

The frequency of the phonograph record = 0.2 Hz.

6 0
2 years ago
Other questions:
  • g 4. A student with a mass of m rides a roller coaster with a loop with a radius of curvature of r. What is the minimum speed th
    5·2 answers
  • Two bodies of masses M and m(M&gt;m) are allowed to fall from the same height. If
    11·1 answer
  • Name the two components that make orbital motion, and explain why objects stay in orbit.
    10·1 answer
  • Explain why sublimation and deposition are classified as physical changes
    13·1 answer
  • When a potential difference of 10 V is placed across a certain solid cylindrical resistor, the current through it is 2 A. If the
    12·1 answer
  • 4. An airplane normally flies at 240 km/hr. If it experiences a 80 km/hr tailwind
    5·1 answer
  • Why doesnt the moon crash towards earths surface?
    15·2 answers
  • (Science)
    10·2 answers
  • Calculate the work done by a 4.2 N force pushing a 450. g sandwich across a table 0.8 m wide.
    15·1 answer
  • Is it possible for an object to change its weight without changing its mass? Explain why or why not
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!