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
dalvyx [7]
3 years ago
13

As a bat flies toward a wall at a speed of 6.0 m/s, the bat emits an ultrasonic sound wave with frequency 30.0 kHz. What frequen

cy does the bat hear in the reflected wave?
Physics
1 answer:
Leto [7]3 years ago
7 0

Answer:

f_b = 29.98 Hz

Explanation:

speed of bat = 6 m/s

sound wave frequency emitted by bat = 30.0 kHz

as we know,

speed of sound (c)= 343 m/s

f_w = f(\dfrac{c+v_r}{c+v_s})

f_w = 30(\dfrac{343+0}{343+6})

f_w = 29.48 Hz

now frequency received by bat is equal to  

f_b = f(\dfrac{c+v_r}{c+v_s})

f_b = 29.48(\dfrac{343+6}{343+0})

f_b = 29.98 Hz

hence the frequency hear by bat will be 29.98 Hz

You might be interested in
What are the blue or red big dancing thing infront of a car wash called thank you
Alenkinab [10]
it’s called a tube man
6 0
3 years ago
Read 2 more answers
What is one way that continental rifts are similar to mid-ocean ridges and what is one that they are different?
adell [148]

Explanation:

Continental rifts and mid-ocean ridges are both features of a divergent plate margin.

In both cases plates are moving away from one another. Therefore they are creating new land masses.

  • A continental drift like the east African rift valley is where a continent begins to pull apart or diverges.
  • A mid-ocean ridge is divergent margin in the ocean.

They are different in that, continental rift occurs within the continental plate that are on land.

But:

 Mid-ocean ridges are in the oceanic crust in the ocean . They form the largest physiographic structure on the earth surface called the mid-ocean ridge.

learn more:

Descending lithosphere brainly.com/question/9582362

#learnwithBrainly

3 0
3 years ago
Read 2 more answers
A car driver traveling at a speed of 108km per hour ,sees a traffic light and stopped after travelling for 20seconds .Find the a
navik [9.2K]

Answer:

– 2.5 m/s²

Explanation:

We have,

• Initial velocity, u = 180 km/h = 50 m/s

• Final velocity, v = 0 m/s (it stops)

• Time taken, t = 20 seconds

We have to find acceleration, a.

\longrightarrow a = (v ― u)/t

\longrightarrow a = (0 – 50)/20 m/s²

\longrightarrow a = –50/20 m/s²

\longrightarrow a = – 5/2 m/s²

\longrightarrow a = – 2.5 m/s² (Velocity is decreasing) [Answer]

6 0
3 years ago
What effect does gravity have on a person living on earth?
GREYUIT [131]
Pulling a person down so we stick to the surface
5 0
3 years ago
What is a conclusion?
Vikki [24]
The end or finish of an event or process.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the average speed of a gazelle that runs 140 meters in 5.0 seconds
    12·1 answer
  • Cell membrane function<br>​
    12·1 answer
  • If you use such a tank to fill 0.020 m3 foil balloons (which don't stretch, and so have an internal pressure that is very close
    7·1 answer
  • Who invented the theory of relativity
    15·2 answers
  • In which scenario is the least amount of work done on a crate?
    8·1 answer
  • Please need help on this
    15·1 answer
  • A guitar string transmits waves at
    15·1 answer
  • If you increase the frequency of a sound wave four times, what will happen to its speed?
    7·1 answer
  • An echo is sound that returns to you after being reflected from a distant surface (e.g., the side of a cliff). Assuming that the
    5·2 answers
  • Help me <img src="https://tex.z-dn.net/?f=%5Chuge%5Cmathcal%5Cred%7B%7D" id="TexFormula1" title="\huge\mathcal\red{}" alt="\huge
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!