The speed of light is 3 „e 108 m/s (300,000,000 m/s). Red light has a wavelength of 7 „e 10-7 m (0.0000007 m). What is its frequency?
Ah, the speed of light, I gotta say it's quite the speed demon! Now, to figure out the frequency of red light, let's go on a wavelength adventure!
So, we know that the speed of light is 3 x 10^8 m/s and the wavelength of red light is 7 x 10^-7 m. Now, we can use a handy-dandy equation: speed of light = frequency x wavelength.
If we rearrange that equation to solve for frequency, we get frequency = speed of light / wavelength. Let's plug in the values and calculate.
Frequency = (3 x 10^8 m/s) / (7 x 10^-7 m)
Now, remember, when you divide by a number in scientific notation, you subtract the exponent. So let's crunch these numbers.
Frequency = 428.57 x 10^8 s⁻ᵡ⁻.
And there it is! The frequency of red light is approximately 428.57 x 10^8 s⁻ᵡ⁻.
Hope that brought a ray of light to your question!
To find the frequency of red light, we can use the equation:
speed of light = wavelength x frequency
We know the speed of light is 3 x 10^8 m/s and the wavelength of red light is 7 x 10^-7 m.
Substituting these values into the equation and solving for frequency:
3 x 10^8 m/s = (7 x 10^-7 m) x frequency
First, let's rearrange the equation:
frequency = (3 x 10^8 m/s) ÷ (7 x 10^-7 m)
Now, we need to simplify the expression:
frequency = (3 ÷ 7) x (10^8 ÷ 10^-7) m/s
Next, we can simplify the numbers:
frequency = (0.42857) x (10^15) m/s
Finally, we express this in scientific notation:
frequency = 4.2857 x 10^14 Hz
Therefore, the frequency of red light is approximately 4.2857 x 10^14 Hz.
scsxz
d = VT = V(1/f) = V/f = Wavelength,
f=V/d = 3*10^8 / 7*10^-7=0.4286*10^15 =
4.286*10^14 Hz.