Answer:
Circular wave
Explanation:
Circular waves are special types of mechanical waves. They all travel through a material medium or some times a vacuum.
An example of such wave is a ripple caused by dropping a stone in a tank of water.
A wave that propagates in circular form on the surface of water falls into this category.
Answer:
0.334 m
Explanation:
The magnetic field due to current in a straight thin wire,
, is given by

where
is the permeability of free spave with value
and
is the distance from the wire.

Substituting the values from the question,


D.sound insulators prevent from being transmitted better than elastic solids
Explanation:
The correct option from the given choices is that, sound insulators prevent sound from being transmitted better than elastic solids.
Sound is a form of wave that transmits energy from one point to another.
This wave form is a longitudinal wave in nature.
During the propagation of sound, it requires a material medium to move.
Sound insulators are special materials designed not to transmit sound energy.
Such materials cuts off sound. They are better than elastic solids in preventing sound transmission.
learn more:
Sound wave brainly.com/question/3619541
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