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
Svet_ta [14]
3 years ago
10

The opening to a cave is a tall, 30.0-cm-wide crack. A bat is preparing to leave the cave emits a 30.0 kHz ultrasonic chirp. How

wide is the "sound beam" 100. M outside the cave opening? Use v sound= 340. M/s.
Physics
1 answer:
Vlada [557]3 years ago
4 0

Answer:

The value is  w =  7.54 \  m        

Explanation:

From the question we are told that

     The length of the crack is  a =  0.3 \  m

     The  frequency is  f =  30.0 \ kHz =  30 *10^{3} \  Hz

      The distance outside the cave that is being consider is  D =  100 \  m

      The speed of sound is v_s =  340 \  m/s

Generally the wavelength of the wave is mathematically represented as

        \lambda =  \frac{v}f}

=>     \lambda =  \frac{340 }{30*10^{3}}

=>     \lambda = 0.0113 \ m/s

Generally for a  single slit the path difference between the interference patterns of the sound wave and the center  is mathematically represented as  

          y =  \frac{ n *  \lambda * D}{a}

=>     y =  \frac{ 1  *  0.0113 * 100}{0.3}

=>     y = 3.77 \  m

Generally the width of the sound beam is mathematically represented as

         w =  2 *  y

=>      w =  2 *  3.77

=>      w =  7.54 \  m        

You might be interested in
Which group's right to vote is protected by the Nineteenth Amendment? Question 7 options: African Americans Native Americans 18-
lisabon 2012 [21]

7. The nineteenth amendment protects the right to vote of 18 year old women.

8.The 24th amendment eliminated poll taxes and increases voting rights in the United States.

9.National voter Registration allowed the option for adults to register vote when they obtain or renew  a driver's license.

10.Three steps in voting process are registering to vote, preparing to vote and casting a ballot.

11.The statement that was not an effect of the United States Supreme Court's ruling in Bush vs Gore is Tennessee's electoral collage votes went to Al Gore.

12.The general election requires the United States choose  a president

13.The type of election that is held to fill  a public office that is left vacant when an official resigns is special election.

14.The position that a person actually vote for when a voter chooses a candidate for president is an elector in the elector college.

15.A possible candidate for president would form an exploratory committee to see how much support he or she can expect.

4 0
3 years ago
Read 2 more answers
When are all the forces acting upon an object balanced?
Rudik [331]

Answer:

When two forces acting on an object are equal in size but act in opposite directions, we say that they are balanced forces.

Explanation:

7 0
3 years ago
at location a, what are the directions of the electric fields contributed by the electron. calculate the magnitudes of the elect
Lisa [10]

We can use the equation E = k | Q | r 2 E = k | Q | r2 to find the magnitude of the electric field. The direction of the electric field is determined by the sign of the charge,

<h3>What is electric and magnetic field ?</h3>

With the use of electricity and other types of artificial and natural illumination, invisible energy fields known as electric and magnetic fields (EMFs) and radiation are created.

  • While the magnetic field is discernible by the force it exerts on other magnetic particles and moving electric charges, the electric field is actually the force per unit charge experienced by a non-moving point charge at any given location inside the field.

Learn more about Electromagnetic field here:

brainly.com/question/14372859

#SPJ4

4 0
1 year ago
Considering the factors that affect gravitational pull, in which location would the gravitational pull from the earth be SMALLES
OleMash [197]
C. The higher the altitude the less gravity affects you
4 0
3 years ago
using newtons law a force of 250N is applied to an object that accelerates at a rate of 5M/s2 what is the mass of the object?
AURORKA [14]

Answer:

50 kg

Explanation:

F = ma

250 N = m (5 m/s²)

m = 50 kg

7 0
3 years ago
Other questions:
  • 99% of all the matter that can be observed in the universe exists as
    6·1 answer
  • Explain why reflection images are easily seen at night in a window pane from inside the house, whereas during the day they are n
    8·1 answer
  • Which of the following are comprised of proteins?
    9·1 answer
  • “I am sure I will get a good grade on this project. I’ve worked really hard; my teacher will recognize my efforts!” This stateme
    5·2 answers
  • Mike enters a revolving door that is not moving. explain where and how mike should push to produce a torque with the least amoun
    7·2 answers
  • If you need a routine health checkup, which facility is most cost-effective?
    15·2 answers
  • B. Projectile on cliff (range)
    8·1 answer
  • SOLVE THE PROBLEM
    5·1 answer
  • A simple pendulum with a length of 2 m oscillates on the Earth's surface. What is the period of oscillations?
    13·1 answer
  • Meet join if yip want to <br><br>Code is; axe-euvr-wey<br><br>Pls don’t flag
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!