Chemistry: Am radio signals broadcast electromagnetic radiation at frequencies between 640 khz and 1.20 mhz. (a) what is the shortest wavelength of an am radio signal? in m (b) what is the longest wavelength? in m

Am radio signals broadcast electromagnetic radiation

Ответ:

firstone04kr

05.01.2022

Chemistry

The shortest wavelength of an AM radio signal is 250 m

The longest wavelength of an AM radio signal is 468.75 m

Explanation:

$\nu=\frac{c}{\lambda}$

where,

$\nu$ = Frequency of wave =

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength

As we can see that frequency and wavelength are inversely proportional to each other. So wave with high frequency will have shorter wavelength and wave with lower frequency will have longer wavelength.

a) The shortest wavelength of an AM radio signal:

$\nu= 1.20 MHz.=1.20\times 10^6Hz=1.20\times 10^6 s^{-1}$

MHz=10^6 Hz

$\lambda =\frac{c}{\nu}$

$=\frac{3\times 10^8m/s}{1.20\times 10^6}=250 m$

b) The longest wavelength of an AM radio signal:

$\nu=640 kHz=640,000 Hz=640,000 s^{-1}$

kHz=1000 Hz

$\lambda =\frac{c}{\nu}$

$=\frac{3\times 10^8m/s}{640,000 s^{-1}}=468.75 m$

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Ответ:

1tzM3

19.09.2021

Chemistry

.100 mol CO2 x $\frac{44.01 g}{1 mol}$
using the values of the periodic you first add the masses of C (12.01g) and O (there are two so it'll be 32.00g). That value will give the mass of 1mole of CO2.

I hate to do this, but
http://youtu.be/Pft2CASl0M0 is a link to a mr andersen video. I dislike watching these cause this is what my teacher uses instead of actually having to teach herself.

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Am radio signals broadcast electromagnetic radiation at frequencies between 640 khz and 1.20 mhz.

(a) what is the shortest wavelength of an am radio signal?
in m

(b) what is the longest wavelength?
in m

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