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
Maksim231197 [3]
3 years ago
14

Sound waves travel at the rate of 343 m/s at 20°C. If a man standing 450 meters away from the wall of a canyon yells, “Hello,” h

ow long will it take for him to hear his own voice echo off of the wall?
Physics
2 answers:
Sophie [7]3 years ago
8 0

Answer:

\Delta t = 2.624\,s

Explanation:

Sound is a form of mechanic wave, which needs a medium to propagate itself and has a constant speed. The time needed to hear his echo is:

\Delta t = \frac{900\,m}{343\,\frac{m}{s} }

\Delta t = 2.624\,s

nekit [7.7K]3 years ago
5 0

Answer:

2.62seconds

Explanation:

Speed is defined as the ratio of the distance covered by a body with respect to time.

Speed v = Distance (s)/Time (t)

For a traveling sound wave, the distance between the source of a sound and the reflector is '2S'.

Speed v = 2 × distance (S)/Time (T)

V = 2S/t

2S = vt

Given speed of the wave = 342m/s

Distance covered = 450m

t = 2S/v

t = (2×450)/343

t = 900/343

t = 2.62seconds

It will take him 2.62seconds for him to hear his own voice echo off of the wall.

You might be interested in
The hockey stick hits the puck forward. Give the reaction force
weqwewe [10]

I think the puck pushes the stick backwards

3 0
3 years ago
Electromagnetic radiation includes only visible light waves.<br><br> true or false
stealth61 [152]

The entire electromagnetic spectrum, from the lowest to the highest frequency (longest to shortest wavelength), includes all radio waves (e.g., commercial radio and television, microwaves, radar), infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

False, There is other things aswell

3 0
2 years ago
The electric field between two parallel plates connected to a 45-volt battery is 500. volts per meter. The distance between the
kotykmax [81]
Electric field = potential difference
                       -----------------------------
                        distance between plates
 
 Distance between plates   =         45
                                                  ----------
                                                     500
 
                                           =          0.09 meters.

8 0
3 years ago
Glaciers begin with snowfall building up and __________________ the ice. (Choose the best answer)
Allisa [31]

Answer:

compacting

Explanation:

i don't think there is very much explanation, the snow falls and compacts the ice to become giant lol

4 0
3 years ago
The velocity of sound on a particular day outside is 331 meters/second. What is the frequency of a tone if it has a wavelength o
Leya [2.2K]
Answer:
frequency = 5.52 * 10² Hz

Explanation:
the equation that relates velocity, frequency and wavelength is:
velocity = frequency * wavelength

We are given that:
velocity = 331 m/sec
wavelength = 0.6 m

Substitute with the givens in the equation to get the frequency as follows:
velocity = frequency * wavelength
331 = frequency * 0.6
frequency = 331 / 0.6
frequency = 5.52 * 10² Hz

Hope this helps :)
4 0
3 years ago
Other questions:
  • A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 21.2 N; when it is completely i
    14·2 answers
  • The International Space Station has a mass of 1.8 × 105 kg. A 70.0-kg astronaut inside the station pushes off one wall of the st
    11·1 answer
  • Which of the following is an element?
    10·1 answer
  • HURRY PLS WILL RATE AND THANKS AND BRAINLIEST
    12·1 answer
  • When more than one wave is in the same location at the same time, then there is _____ between the waves?
    13·1 answer
  • A motorcycle has a constant acceleration of 2.5 m/s2 . Both the velocity and acceleration of the motorcycle point in the same di
    7·1 answer
  • Give two advantages and disadvantages each of renewable and non renewable sources of energy
    14·2 answers
  • What happens to a bar of metal when its heated?
    13·2 answers
  • Can anybody answer this its a science question NO LINKS !!!!
    5·1 answer
  • How does wind from? nnnnnnnnnn
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!