Sonar system is a technique that uses sound propagation for underwater activities.Sonar<span> is simply making use of an echo. When an animal or machine makes a noise, it sends sound waves into the environment around it. Those waves bounce off nearby objects, and some of them reflect back to the object that made the noise.</span>
Answer:
0.8582 m/s^2
Explanation:
mass of the bob m = 80 kg
length of the string L= 10.0 m
angle made with the vertical θ= 5.0
let the force exerted by the string = T
from the FBD
T cosθ= mg
T cos 6°= 80×9.81
⇒T=
= 787.79 N
how horizontal component of tension
=787.79 sin 5°= 68.66 N
Now, radial acceleration,
= 68.66/80= 0.8582 m/s^2
Answer:
Liquids are more dense than gases, but less dense than solids, so sound travels 2nd fast in liquids. Gases are the slowest because they are the least dense: the molecules in gases are very far apart, compared with solids and liquids.
Explanation:
Answer:
(ii) The Electric Field reports the Electric Force on a 1C test charge placed at a particular location.
(iii) The Electric Potential reports the Electric Potential energy of a 1C test charge place at a particular location.
(iv) The spatial derivative of the electric potential at a particular location reports the electric field at that location.
ii, iii and iv are true.
Explanation:
Electric force per unit charge is the electric field. It is a vector. E = F/q.
Electric potential is the electric potential energy per unit charge and is a scalar quantity, like the electric potential. V = U/q where U is the electric potential energy and q the charge.
Electric field exists due to a difference of potential, between two different points.E =dV/dx .