A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium (such as air, water, or any other liquid or solid matter) as it propagates away from the source of the sound. The source is some object that causes a vibration, such as a ringing telephone, or a person's vocal chords.

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3 0

2 years ago

charle [14.2K]

Answer:

3 significant figures are in 1.02m

Explanation:

4 0

3 years ago

likoan [24]

Answer:

v = 134.06 m/s

Explanation:

Given that,

Radius of a circular track is 1,835 m

Time required to complete one lap around a perfectly circular track is 86 seconds

We need to find the car's velocity. Velocity is equal to,

v=d/t

On circular path,

$v=\dfrac{2\pi r}{t}\\\\v=\dfrac{2\pi \times 1835}{86}\\\\v=134.06\ m/s$

So, car's velocity is 134.06 m/s.

7 0

3 years ago

liubo4ka [24]

Answer:

D) This layer is the emitter of a PNP transistor, so it could include boron.

Got it on quiz! Good luck!

Explanation:

4 0

2 years ago