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
puteri [66]
3 years ago
8

The human ear canal is about 2.7 cm long and

Physics
1 answer:
scoray [572]3 years ago
5 0

Answer:3.185KHz

Explanation:

Where

Length (L) = 2.7cm

Speed (V) = 344m/s

Wavelength of the fundamental standing wave: λ = 4L

λ = 4L

Frequency is the rate per second of a vibration constituting a wave.

Frequency is given as:

F= v/ λ

Therefore,

Frequency= v/4λ

Frequency = 1×(344m/s)/4×(2.7cm)

Convert centimetre to meter

100cm= 1m

Convert Hz to kiloHz

1000Hz= 1kHz

Frequency= 3.185KHz

You might be interested in
Charges that do not transfer
ratelena [41]

Answer:what is the question exactly

Explanation:

8 0
3 years ago
Lukalu is rappelling off a cliff. The parametric equations that describe her horizontal and vertical position as a function of t
andre [41]

Answer:

2.5 s, 5 m

Explanation:

The equations for the horizontal and vertical position of Lukalu are:

x(t) = 8t\\y(t) = -16t^2 + 100

we can find the time it takes her to reach the ground by requiring that the vertical position becomes zero:

y(t) = 0

So we find:

0=-16t^2 +100\\16t^2 = 100\\t=\sqrt{\frac{100}{16}}=2.5 s

The horizontal distance of Lukalu instead will be given by the equation for the horizontal position, substituting t = 2.5 s:

x=8t = 8 \cdot 2.5 s =5 m

4 0
3 years ago
Which statement best describes a device that has a high energy efficiency? Its ratio of energy absorbed to energy released is hi
Stels [109]

Answer:

It wastes little energy

Explanation:

  • The efficiency of a machine refers to the ratio of work output to the work input as a percentage.
  • The efficiency of most machines is less than 100% because some work is lost  due to friction and heat.
  • Therefore, a machine with high efficiency has less wastage of energy due to factors such as friction of the moving parts. Conversely, low efficiency means there is more wastage of energy.
3 0
3 years ago
Read 2 more answers
Please answer this<br> No links please
Sladkaya [172]
Your answer is- amplitudes
6 0
3 years ago
There are competitions in which pilots fly small planes low over the ground and drop weights, trying to hit a target. Part A A p
tamaranim1 [39]

Explanation:

A pilot flying a weight; it takes t = 3.4 s to hit the ground, during which it travels a horizontal distance d = 120 m  

h = g/2*t^2

h= 4.903*3.4^2

h=56.701 m

V = d/t

V= 120/3.4

V=35.3 m/sec  

Now the pilot does a run at the same height but twice the speed.  

How much time (t1) does it take the weight to hit the ground?

t1 = t = 3.4 sec (depending just upon height)

5 0
3 years ago
Other questions:
  • PLEASE ANSWER ASAP
    8·1 answer
  • An train car of total mass of 13000 kg is pulling into a station and slowing down with an acceleration of -4.56 m/s^2. Before th
    7·1 answer
  • Smog is a type of air pollution. It is a mixture of fog and smoke or other airborne pollutants such as exhaust fumes. What is a
    10·2 answers
  • What is Potentiometer ​
    15·1 answer
  • A climber pulls herself 8 meters upwards with a force of 150 Newtons. If it takes her 16 seconds to cover the 8 meters, how much
    9·1 answer
  • ¿Cómo obtener razonadamente la primera ley de newton a partir de la segunda?
    6·1 answer
  • Is length a <br> vector,<br> scalar<br> ,both,<br> neither
    15·1 answer
  • Tarzans mass is 75kg. calculate his weight
    14·1 answer
  • A car is traveling at 7.0 m/s when the driver applies the brakes. The car moves 1.5 m before it comes to a complete stop. If the
    13·1 answer
  • Which of the following situations has more kinetic energy than potential energy?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!