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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 7, Problem 40E
Textbook Problem
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Calculate the wavelength of the radio waves used to produce the AM radio signal found at 1140 kilohertz (kHz) on the radio dial.

Interpretation Introduction

Interpretation:

The wavelength of the radio waves used to produce the AM radio signals found at given frequency radio dial is to be calculated.

Concept introduction:

The distance between consecutive crests of a wave is called wavelength.

Frequency is the number of waves that pass through a fixed point per second.

The relation between wavelength and frequency of radiation is as follows:

λ=cν

Here, λ is the wavelength of radiation, c is the speed of light, and ν is the frequency.

Explanation of Solution

Given information: The frequency of the radio signal is 1140 kilohertz(KHz).

The relation between kilohertz and hertz is as follows:

1KHz=1×103Hz1140 KHz=1140KHz×1×103Hz1KHz=1140×103 Hz

Also, the relation between hertz and cycles per second is as follows:

1Hz=1cyclepersecond1140×103 Hz=1140×103Hz×1cyclepersecond1Hzx

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Chemistry In Focus
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