The sound heard following reflections from a hard surface such as a cliff or a wall is known as an echo. The time is taken to hear the echo will be 0.5 seconds.
<h3 /><h3>What is an echo?</h3>
The repeated same voice heard by the person when the voice is reflected from hard surfaces such as the wall is known as the echo.
Dolphins utilize the echo to identify for navigation. Sonar is a similar concept. Submarines use sonar teqnique.
speed of sound wave = 320 m/sec
distance from the reference = 80 m
as we know that
Distance = speed × time
![\rm Time=\frac{Distance}{Speed}](https://tex.z-dn.net/?f=%5Crm%20Time%3D%5Cfrac%7BDistance%7D%7BSpeed%7D)
![\rm Time=\frac{80}{320}\\\\ \rm Time=0.25 sec.](https://tex.z-dn.net/?f=%5Crm%20Time%3D%5Cfrac%7B80%7D%7B320%7D%5C%5C%5C%5C%20%5Crm%20Time%3D0.25%20sec.)
The total time to hear the echo will be twice the time travel on one side.
Total time = 2× 0.25
Total time = 0.5 sec
Hence the time is taken to hear the echo will be 0.5 seconds.
To learn more about echo refer to the link;
brainly.com/question/9028662
See the attached picture.
The sentences have been carefully dragged to the right places.
Answer: A because yoir tires will grip the ground other than the wet road you will slide and go of in the ditch or go into the tree ...hope this helps
Explanation:
Answer:
The human body can be a source of magnetic fields. Charged particles when moving through a magnetic field experiences a force. This magnetic force on a moving charge is at right angles to the velocity which makes it possible to use the knowledge of the magnetic field on charged particles to shield yourself from radiation exposure by staying at a right angle to the velocity of the field since magnetic fields tend to shield moving charged particles that is at a right angle to the field. Though the charged particle’s kinetic energy and speed will remain constant.
Explanation:
A magnetic field is a vector field that is generated whenever an electrical charge is moving,
Answer:
2.0
Explanation:
i think 2.0 because u are trying find the magnitude of it