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
Kryger [21]
3 years ago
10

When you hear an echo you are hearing a ________of the original sound wave

Physics
1 answer:
krek1111 [17]3 years ago
7 0

Answer:

reflection

Choice D is correct

Explanation:

An echo is simply a reflection of the original sound wave which arrives at the listener with a delay after the original sound.  Sound waves can be reflected, that is bouncing off objects in the same manner a solid object can bounce off the ground. The echo sounds entirely the same as the original sound but the direction of the sound is altered.

You might be interested in
Explain velocity ratio. Explain and define the efficiency of a machine​
Norma-Jean [14]
Velocity ratio is also defined as the ratio of a distance through which any part of a machine moves, to that which the driving part moves during the same time. An object has a mechanical advantage if it exerts a force higher than the velocity ratio.
8 0
3 years ago
A 2.0-kilogram ball traveling north at 4.0 meters per second collides head on with a 1.0-kilogram ball traveling south at 8.0 me
enyata [817]

Answer:

We know the momentum after the collision MUST be equal to the momentum BEFORE the collision.  

Momentum is a VECTOR quantity having both magnitude and direction.  The first ball has momentum P =m*v = 2*4 = 8 at 90degrees.  The second ball has momentum P = 1*8 = 8 at -90 or 270 degrees.  They sum to zero when you perform vector addition.

Explanation:

6 0
3 years ago
Researchers condition a flatworm to contract when exposed to light by repeatedly pairing the light with electric shock. the elec
Serga [27]
Negative Reinforcement
5 0
3 years ago
Why are springs made of steel and not of copper.​
torisob [31]

Answer:

Springs are made of a variety of materials including copper and various forms of steel. The most common is high carbon steel as it is cheap, easy to work and a couple of other important properties.

Copper springs exist as well, but copper is more expensive than steel. However, in an environment where corrosion resistance is important, copper springs are a good alternative.

Explanation:

8 0
3 years ago
Read 2 more answers
Which law represents the thermodynamic statement of the conservation of energy of a system
Tresset [83]
The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.<span>

</span>
3 0
3 years ago
Other questions:
  • A scuba diver shines a flashlight from beneath the surface of water (n = 1.33 such that the light strikes the water-air boundary
    14·1 answer
  • All the bats living in a cave form a _______ of bats in the cave ecosystem.
    12·1 answer
  • The prevailing winds that form in hadley cells are ?
    11·2 answers
  • A ______ psychologist held children with learning problems and works with teacher and parents to create a healthy environment.
    12·1 answer
  • A plane flying horizontally above earth’s surface at 100. meters per second drops a crate. the crate strikes the ground 30.0 sec
    9·1 answer
  • Material through which a wave passes
    11·1 answer
  • In Which figure below is the trend line drawn correctly
    5·1 answer
  • A differnece in electric potential is required for an electric charge to flow through a wire.
    7·2 answers
  • You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 13-m-hi
    9·1 answer
  • What is velocity Write its formula
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!