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
emmasim [6.3K]
2 years ago
5

An echo is sound that returns to you after being reflected from a distant surface (e.g., the side of a cliff). Assuming that the

distances involved are the same, an echo under water and an echo in air return to you _____________________
a. at different times, the echo under water returning more slowly.
b. at different times, the echo under water returning more quickly.
c. at the same time
Physics
2 answers:
Nuetrik [128]2 years ago
8 0

Answer:

b. at different times, the echo under water returning more quickly.

hoa [83]2 years ago
4 0

Answer:

The correct answer is B

An echo underwater and an echo in the air will return at different times. The echo underwater will return more quickly than the echo in the air.

Explanation:

The physics of this is simple.

Water and air are both made up of particles. The particles for water are more closely or densely arranged that those of the air molecules. Hence sound travels faster in water than in air. When measured, the speed actually differs by as much as 5 times with water being the fastest medium.

Think of it like this. Assume you have two stacks of dominoes, one closely packed than the other but exactly the same amount of dominos, you'd notice that the stack that is more tightly arranged will be the first to topple over because it takes less time for the kinetic energy from the first domino to reach the next and on and on like that until the last domino.

Cheers

You might be interested in
Hypsometer (upper fixed point​
aivan3 [116]

Answer:a device for calibrating thermometers at the boiling point of water at a known height above sea level or for estimating height above sea level by finding the temperature at which water boils.

Explanation:

3 0
2 years ago
Select all of the following that will produce a magnetic field:________.
zysi [14]

Answer:

a ,b , d ,e

Explanation:

took the k12 quiz and got a 100

4 0
1 year ago
I need assistance with this:​
emmainna [20.7K]

11: 75% = 0.75     12 / 0.75 = 16          The Knicks attempted 16 free throws.

12: 320 - (0.05 x 320) = 304      304 Claims were accepted

7 0
3 years ago
Work/Power problem with friction
Kisachek [45]

Answer:

This is the formula

Explanation:

−(0.54 m/s)2

2(−1.67 m/s2)

so this is the step by taking the mean of the maximum value of friction with the minimum value you can get the average force of friction

3 0
2 years ago
Read 2 more answers
The size of chest cavity during inhalation
timurjin [86]
FIND YOU ANSWER HERE:
https://www.coursehero.com/file/p59crb/The-chest-cavity-increases-in-size-and-pressure-within-the-lu....
6 0
3 years ago
Other questions:
  • As air is heated, the particles speed up and spread out (becoming less dense). Hot air balloon pilots can change the balloon’s a
    12·1 answer
  • Why are the temperatures on each of the other terrestrial planets more extreme than earth?
    12·1 answer
  • A solenoidal coil with 26 turns of wire is wound tightly around another coil with 350 turns. The inner solenoid is 20.0 cm long
    15·1 answer
  • the olympic swimmer swims to the end of the 50 m pool and back 4 times. calculate the distance covered.
    11·1 answer
  • You serve a volleyball with a mass of 2.1 Kg. The ball leaves your hand with a speed of 30m/s. The ball has __________________ e
    9·1 answer
  • On a standing wave on a string, the minimum number of nodes is 1 and antinodes is 2. True or false?
    12·1 answer
  • A gymnast with mass m1 = 43 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 =
    9·1 answer
  • Can someone awnser this
    14·1 answer
  • List three conditions for current to flow in a circuit.
    8·1 answer
  • Find the cost of excavating a space 84 ft long, 42 ft wide, and 9 ft deep at a cost of $39/yd3. (simplify your answer completely
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!