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
serg [7]
3 years ago
14

Explain the conditions in which a person can or can’t hear an echo. Which of the following materials would be the least efficien

t in soundproofing a room: clay tile, plaster, or perforated acoustic ceiling material? Be sure to use your knowledge of the coefficient of absorption in your explanation. Compare and contrast infrasonic and ultrasonic vibrations. Describe the responses of the human ear to sound waves coming from the right side, left side, or in phase.
Physics
2 answers:
shutvik [7]3 years ago
3 0

Answer:

plaster............

Explanation:

Nostrana [21]3 years ago
3 0

Answer: for someone to be able to hear an echo the following conditions must be true:

-the minimum distance between the sound and reflector in the air must be 17 meters, however this does vary depending on the speed of sound in the medium.

-the sound must be intense enough so that it could reach the ear and be audible

-the reflectors size must be large enough compared to the Sound wavelength

Explanation:

You might be interested in
Consider the roller coaster on the track. If you want to increase the kinetic energy of the roller coaster as it proceeds throug
a_sh-v [17]

Answer:

The answer is A and D but if you want one anwer i think the anwer is A

Explanation:

5 0
4 years ago
What must happen for liquid water to become water vapor
rosijanka [135]
It must be boiled/heated to a high temp
4 0
3 years ago
A biker rides on an upward-sloped road inclined at a 15.0° angle with the horizontal. If he moves at a constant speed of 2.0 met
IrinaVladis [17]

With total velocity v=2.0\,\dfrac{\mathrm m}{\mathrm s}, the horizontal component of velocity is

v_x=\left(2.0\,\dfrac{\mathrm m}{\mathrm s}\right)\cos15.0^\circ\approx1.93\,\dfrac{\mathrm m}{\mathrm s}

Then the horizontal displacement over the first minute is

s_x=\left(1.93\,\dfrac{\mathrm m}{\mathrm s}\right)(60\,\mathrm s)\approx116\,\mathrm m

6 0
3 years ago
Read 2 more answers
Identify the part of a carrot plant that contains chlorophyll and the part that contains
Alex Ar [27]

Answer:

Leaves and Roots

Explanation:

The leaves of carrots contain chlorophyll which gives them their green color.

Stored in the carrot roots is extra glucose that serves as a food source for the second year's growth of the carrot plant. The carrot plant needs this stored eneergy to reproduce in its second year.

8 0
3 years ago
Characteristics help scientists ________ objects.
Naddika [18.5K]

Answer:Identify

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • A toy train of m=0.60 kg moves at 20m/s along a straight track. It bumps into another train of M=1.5kg moving in the same direct
    6·1 answer
  • Which action makes use of a magnetic force?
    10·1 answer
  • A dam holds back a lake that is 85m deep at the dam. If the lake is 20km long, how much thicker should the dam be if the lake we
    9·1 answer
  • Cosmic rays are particles traveling at extreme speeds through intergalactic space. Many are launched by exploding supernovae. Ev
    6·1 answer
  • Rosalind is an impulsive child who seldom waits for her turn when playing with other children. Rosalind's father is also an impu
    13·1 answer
  • When you trace the outline of your palm how do you find its area​
    9·2 answers
  • Our observations always qualitative
    11·1 answer
  • select the correct relationship of the densities of the given substances: !●water < iron < aluminium < mercury ● Iron &
    13·1 answer
  • Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, t
    12·2 answers
  • • How can you find the temperature in Fahrenheit when its given in the<br> Celsius scale?<br> I
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!