Aperson holds a rifle horizontally and fires at a target. the bullet leaves the muzzle of the rifle with a velocity of 460 m/s. two seconds later the person hears the bullet strike the target.
if the speed of sound in air is 340 m/s, calculate the distance travelled from the bullet to the target.
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Ответ:
A thin membrane.
Explanation:
When a sound signal is allowed to pass through the voice coil suspended between permanent magnet, magnetic field will be induced which will cause vibration in the diaphragm - a thin membrane causing disturbance of air in the surrounding of membranes which eventually produce sound waves.
Therefore, we can conclude that a thin membrane of the loud speaker produces sound waves