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2 years ago

A herdsman yelling out to a fellow herdsman heard his voice reflected by a cliff 4s later.What is

Physics

1 answer:

Sloan [31]2 years ago

4 0

Answer:

v = 340 m/s

Explanation:

Given that,

A herdsman yelling out to a fellow herdsman heard his voice reflected by a cliff 4s later.

The cliff is 680 m away

We need to find the velocity of sound in air.

Velocity = distance/time

Distance = 2 × 680 = 1360 m

$v=\dfrac{1360\ m}{4\ s}\\\\=340\ m/s$

So, the velocity of sound in air is 340 m/s.

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The correct option is;

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2 years ago

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Am radio signals have frequencies between 550 khz and 1600 khz (kilohertz) and travel with a speed of 3.00 ✕ 108 m/s. what are t

Allisa [31]

The minimum frequency is
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$f_2 = 1600 kHz = 1.6 \cdot 10^6 Hz$
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So, the wavelengths of the radio waves of the problem are within the range 188-545 m.

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2 years ago