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
Elina [12.6K]
3 years ago
5

The human ear canal is about 2.8 cm long. If it is regarded as a tube that is open at one end and closed at the eardrum, what is

the fundamental frequency around which we would expect hearing to be most sensitive?[3.1 kHz]
Physics
1 answer:
Diano4ka-milaya [45]3 years ago
8 0

Answer:

f = 3.1 kHz

Explanation:

given,

length of human canal =2.8 cm = 0.028 m

speed of sound = 343 m/s

fundamental frequency  = ?

The fundamental frequency of a tube with one open end and one closed end is,

f = \dfrac{v}{4L}

f = \dfrac{343}{4\times 0.028}

f = \dfrac{343}{0.112}

       f = 3062.5 Hz

       f = 3.1 kHz

hence, the fundamental frequency is equal to f = 3.1 kHz

You might be interested in
Which data set has the smallest standard deviation?
777dan777 [17]
The answer would be B.
<span>
Standard deviation basically measures how spread out the values are. Without solving, you can easily tell which one among your choices have a smaller deviation. The closer the values are to each other the smaller the standard deviation. The values of choice B are the closest together, so you can assume that they have the smallest standard deviation. </span>
8 0
4 years ago
Read 2 more answers
The three forces shown act on a particle. what is the direction of the resultant of these three forces?
melisa1 [442]
Missing figure: http://d2vlcm61l7u1fs.cloudfront.net/media/f5d/f5d9d0bc-e05f-4cd8-9277-da7cdda3aebf/phpJK1JgJ.png

Solution:
We need to find the magnitude of the resultant on both x- and y-axis.

x-axis) The resultant on the x-axis is
F_x = 65 N\cdot cos 30^{\circ} - 30 N - 20 N\cdot sin 20^{\circ} = 19.45 N
in the positive direction.

y-axis) The resultant on the y-axis is
F_y = 65 N \cdot sin 30^{\circ} - 20 N \cdot cos 20^{\circ} = 13.70 N
in the positive direction.

Both Fx and Fy are positive, so the resultant is in the first quadrant. We can find the angle and so the direction using
\tan \alpha =  \frac{F_y}{F_x} = \frac{13.70 N}{19.45 N}=0.7
from which we find 
\alpha=35^{\circ}
7 0
3 years ago
Select the correct answer. Brian is repairing an old alarm clock. He needs to replace a device that converts the electric energy
Stella [2.4K]

it shouldbe a buzzer

3 0
3 years ago
Read 2 more answers
PLEASE HELPPPPPPPP<br> What is the average velocity of a train that goes 86 km in 1.3 hours?
olga_2 [115]
The answer is:

V = d/t d = 86 km t = 1.3 hrs

V = 86 km/ 1.3 hrs

V = 66.15 km/ hrs

I hope this helps!!
5 0
3 years ago
A rock with a mass of 0.3 kg falls from the top of a cliff. If it takes the rock 2.5 s to reach the ground, what was the impulse
kaheart [24]
Impulse=force x time
force=mass x acceleration due to gravity
force=
300 \times 10 = 3000
impulse =3000 x 2.5= ( sorry i don't have a calculator right now so you must calculate this yourself)
I converted from kg to g because it is the standard.
Hope this helps you.
4 0
4 years ago
Other questions:
  • The height of a typical playground slide is about 6 ft and it rises at an angle of 30 ∘ above the horizontal.
    7·1 answer
  • A cart loaded with bricks has a total mass of 20.4 kg and is pulled at constant speed by a rope. The rope is inclined at 26.1 ◦
    14·1 answer
  • What is the order of magnitude of the gravitational force between two 1.0 kilogram charges that are positioned 1.0 meter apart?
    5·1 answer
  • Where can I download high school textbooks online?​
    14·1 answer
  • At the instant the traffic light turns green, a car starts with a const acceleration of 7.00 ft/sA2. At the same instant a truck
    6·1 answer
  • One astronomer has observed an apparent lengthening of the electromagnetic waves given off by a star. Which of these conclusions
    9·2 answers
  • Define limitations in the operation conditions of a pn junction<br>​
    7·1 answer
  • When a gas is compressed, the molecules are pushed closer together causing the gas to ______.
    12·2 answers
  • The most basic unit of charge is the _____.
    12·2 answers
  • A 2 kg object traveling at 5 m s on a frictionless horizontal surface collides head-on with and sticks to a 3 kg object initiall
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!