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
Aliun [14]
2 years ago
7

The length of the ear canal is 2.5 cm and the speed of sound in air is 300 m/s. Which of the following is a reasonable estimate

of a frequency that can be heard by the human ear?
Choose 1 answer:
a) .001 Hz
b) 1 Hz
c) 10,000 Hz
d) 100,000 Hz

Show steps please
Physics
1 answer:
yanalaym [24]2 years ago
4 0

10,000 Hz is a reasonable estimate of a frequency that can be heard by the human ear.

<h3>What frequency heard by human ear?</h3>

Humans can detect sounds in a frequency range from about 20 Hz to 20000 Hz. Lower than 20 Hz and higher than 20000 Hz can't be heard by the human ear. We can say that 10000 Hz can be hear because it comes in this range

So we can conclude that 10,000 Hz is a reasonable estimate of a frequency that can be heard by the human ear.

So we can conclude that frequency here: brainly.com/question/254161

#SPJ1

You might be interested in
How can you show positive body languages with your mouth
sergey [27]
By just smiling. It normally makes you look more happy.And if your happy that's positive body languge
7 0
3 years ago
How many valence electrons does each atom of arsenic (As) have? Arsenic is element 33. It is in period 4 and family 15 (5A or th
vodka [1.7K]

Answer:

It have 5 valence electrons

7 0
3 years ago
Read 2 more answers
A group of students prepare for a robotic competition and build a robot that can launch large spheres of mass M in the horizonta
jeyben [28]

Answer:

V_0

Explanation:

Given that, the range covered by the sphere, M, when released by the robot from the height, H, with the horizontal speed V_0 is D as shown in the figure.

The initial velocity in the vertical direction is 0.

Let g be the acceleration due to gravity, which always acts vertically downwards, so, it will not change the horizontal direction of the speed, i.e. V_0 will remain constant throughout the projectile motion.

So, if the time of flight is t, then

D=V_0t\; \cdots (i)

Now, from the equation of motion

s=ut+\frac 1 2 at^2\;\cdots (ii)

Where s is the displacement is the direction of force, u is the initial velocity, a is the constant acceleration and t is time.

Here, s= -H, u=0, and a=-g (negative sign is for taking the sigh convention positive in +y direction as shown in the figure.)

So, from equation (ii),

-H=0\times t +\frac 1 2 (-g)t^2

\Rightarrow H=\frac 1 2 gt^2

\Rightarrow t=\sqrt {\frac {2H}{g}}\;\cdots (iii)

Similarly, for the launched height 2H, the new time of flight, t', is

t'=\sqrt {\frac {4H}{g}}

From equation (iii), we have

\Rightarrow t'=\sqrt 2 t\;\cdots (iv)

Now, the spheres may be launched at speed V_0 or 2V_0.

Let, the distance covered in the x-direction be D_1 for V_0 and D_2 for 2V_0, we have

D_1=V_0t'

D_1=V_0\times \sqrt 2 t [from equation (iv)]

\Rightarrow D_1=\sqrt 2 D [from equation (i)]

\Rightarrow D_1=1.41 D (approximately)

This is in the 3 points range as given in the figure.

Similarly, D_2=2V_0t'

D_2=2V_0\times \sqrt 2 t [from equation (iv)]

\Rightarrow D_2=2\sqrt 2 D [from equation (i)]

\Rightarrow D_2=2.82 D (approximately)

This is out of range, so there is no point for 2V_0.

Hence, students must choose the speed V_0 to launch the sphere to get the maximum number of points.

7 0
3 years ago
Please help asap asap<br> wdtwygcbhyeegdlu tcgbihjlnkdm;fnbkhjg hv
kicyunya [14]

Answer:

B

Explanation:

Bbbb

6 0
3 years ago
Liquid droplets that fall from the sky are?<br> A) rain<br> B)snow<br> C) sleet <br> D) hail
alukav5142 [94]
The answer is a)rain

6 0
3 years ago
Read 2 more answers
Other questions:
  • How are red dwarf stars and yellow dwarf stars alike?
    10·1 answer
  • What happens when a electron and a proton get close together?
    15·1 answer
  • The illustration represents one form of _________________, the process that enables all stars, including our sun, to continuousl
    12·2 answers
  • A cat with a mass of 4.50 kilograms sits on a ledge 0.800 meters above the ground. What is the potential energy of the cat? 346
    5·2 answers
  • Average value of A.c. for complete cycle
    11·1 answer
  • If the speed of a car is increased by 80%, by what factor will its minimum braking distance be increased, assuming all else is t
    12·1 answer
  • The intensity of light from a central source varies inversely as the square of the distance. If you lived on a planet only half
    15·1 answer
  • You own a high speed digital camera that can take a picture every 0.5 seconds. You decide to take a picture every 0.5 seconds of
    8·2 answers
  • What would happen if you threw a grenade into a woodchipper?
    9·2 answers
  • 20 points plz help i dont really understand how to do this
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!