# Physics

posted by .

An EM wave has a wavelength of 620 nm.
What is its frequency?
How would we classify it?

• Physics -

620 nm = 620*10^-9 m. = 6.2*10^-7 m.

L = V/F.
F = V/L = 3*10^8m/s / 6.2*10^-7m = 4.839*10^14 cycles/s = 4.839*10^14 Hz.

## Similar Questions

1. ### physics

A sound wave travels in air at a frequency of 500 Hz. If part of the wave travels from air into water, does its frequency change?
2. ### Physics

How do you calculate the wave speed of waves that are 0.15 m apart, and have a frequency of 2 Hz?
3. ### physics

A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 32.0 m/s. a) What is the amplitude if the maximum displacement is 28.0 cm and the total distance travelled by the wave is 26.0 m?
4. ### Intergarted Science

I had a couple of questions on the topic of Waves-Sound and Light. 1. What is the source of all waves?
5. ### PHYSICAL SCIECE

A seismic wave has a velocity of 5000 m/s and a frequency of 4Hz. wht is the wavelength of this wave?
6. ### Intro Physics

An EM wave has a wavelength of 620 nm. What is its frequency?
7. ### Physics

The period of longitudinal sinusoidal wave is 0.16 seconds and its wavelength is 8.0 meters. Calculate the wave's speed, frequency, angular frequency and wave number.
8. ### Science

Which of the following correctly describes a radio wave?
9. ### Physics help

a wave with a frequency of 3.1 hz and a wavelength of 0.3 meters experiences a lengthening of wavelength to 2.6 meters what is the new frequency of this wave?
10. ### Physics

Two sound waves are traveling through a container of unknown gas. Wave A has a wavelength of 1.2 m. Wave B has a wavelength of 3.6 m. The frequency of wave B must be __________ the frequency of wave A. a. one-ninth b. one-third c. …

More Similar Questions