Mechanics | Relativity Answers

In a vacuum all colors of light travel at a speed of 3 x 10^8 m/sec. The HeNe laser emits a red color with a wavelength of 633 nm. What is the frequency of this light?

A traveling wave has a wavelength of 2 meters and a frequency of 400 Hz. Find the speed and period of the wave.

As you stand on a pier looking at a harbor, the waves created by a large freighter come ashore. You estimate the wavelength to be 3.0 m and you count twelve wave peaks arriving in one minute. (a) What is the frequency of the wave in hertz? (b) How fast is the wave traveling in meters per second(m/s)?

Two waves travel in the same medium at the same speed. One has wavelength 0.0382 m and frequency 9.67×106 Hz. The other has wavelength 0.0481 m. What is the period of the second wave?
answer in seconds.

Two waves travel in the same medium at the same speed. One wave has frequency 5.72×105 Hz and wavelength 0.533 m. The other wave has frequency 6.13×105 Hz. What is the second wave's wavelength? answer in meters.

The radio wave from a station broadcasting at 1.3×106 Hz has a wavelength of 230 m. What is the wave's speed? answer in m/s.

Suppose you are standing on a boat in the ocean looking out at a person swimming in the water. The waves swell under your boat at a frequency of 0.80 Hz, while traveling with a wave speed of 4.5 meters per second. At any given moment, you count that there are exactly 6 complete waves between you and the swimmer. How far away is the swimmer? answer in meters.

A wave has a speed of 351 m/s and a wavelength of 3.40 meters. What is its period? answer in seconds.

An important wavelength of radiation used in radio astronomy is 21.1 cm. (This wavelength of radiation is emitted by excited neutral hydrogen atoms.) This radiation travels at the speed of light, 3.00×108 m/s. Compute the frequency of this radio wave. answer in Hz( Hertz)

If 12 wave crests pass you in 23 seconds as you bob in the ocean, what is the frequency of the waves? answer in HZ(Hertz)