1)An electromagnetic wave is produced by:
an accelerating charged particle or changing magnetic fields.
2)Find the period of an electromagnetic wave of wavelength 2.20 x 10^-2 m.
3.00 x 10^8 * 2.20 x 10^-2
= 6.60 x 10^6 s
2) 1/period*wavelength=speedoflight
period=wavelength/speedoflight.
Also, think about your answer. A million seconds for one period? Goodness.
2)I don't really understand 1/period*wavelength. I can't multiply period times wavelength if I don't know the period. but I did get a different answer. my book doesnt show me how to find the period I just used wavelength-frequency relationship for a wave equation to find the frequency
2.20 x 10^-2/3.00 x 10^8
= 7.33 x 10^-11
these are my choices by the way:
A)1.36 x 10^10
B)4.54 x 10^1
C)7.33 x 10^-11
D)6.60 x 10^6
frequency = (speed of light)/(wavelength)
= 3*10^8 m/s/(2.2*10^-2 m)
Looks like (A) to me.
All I did was rearrange the equation BobPursley gave you.
If you would label your calculations with dimensions, and write down your equations, it would be easier for you to find your own errors. Once again, it seems you are just plugging in numbers at random.
thank you but no I did not 3.00 x 10^8 is the speed of light constant I got from my book not out of my head that's what I use to find the wavelength
the answer was C
To find the period of an electromagnetic wave, you can use the equation:
Period = 1 / Frequency
The formula for frequency is:
Frequency = speed of light / wavelength
Given that the speed of light is approximately 3.00 x 10^8 m/s and the wavelength is 2.20 x 10^-2 m, you can substitute these values into the formula to calculate the period.
Frequency = (3.00 x 10^8 m/s) / (2.20 x 10^-2 m)
To solve this, you need to perform the division:
Frequency = 3.00 x 10^8 / 2.20 x 10^-2
To divide numbers written in scientific notation, you can divide the coefficients and subtract the exponents:
Frequency = (3.00 / 2.20) x 10^(8 - (-2))
Simplifying the coefficient and exponent, you get:
Frequency = 1.36 x 10^10 Hz
Now that you have the frequency, you can find the period using the formula:
Period = 1 / Frequency
Plugging in the frequency value:
Period = 1 / (1.36 x 10^10 Hz)
To calculate the period of the electromagnetic wave, perform the division:
Period = 1 / 1.36 x 10^10
Finally, simplify the result:
Period = 7.35 x 10^-11 seconds
So, the period of the electromagnetic wave with a wavelength of 2.20 x 10^-2 m is approximately 7.35 x 10^-11 seconds.