Two boats - Boat A and Boat B - are anchored a distance of 15.8 meters apart. The incoming water waves force the boats to oscillate up and down, making five complete cycles every 28.9 seconds. When Boat A is at its peak, Boat B is at its low point. There is one crest between the two boats. The vertical distance between Boat A and Boat B at their extreme is 12.3 meters.

I know for sure the frequency is = .173 Hz, but I can't figure anything else out :|

Frequency
f = 5cycles/28.9seconds = .173 cycles/sec = .173 Hz

wavelength
If boat A is at the peak and boat B is at the low with one crest between them then the distance of 15.8m represents 1 1/2 waves, so the wavelength is 15.8/(3/2) = 10.53 meters

Speed
velocity = wavelength*frequency = .173*10.53 = 1.82m/s

Wavelength, Frequency, and the Speed of Light in Different Media?

A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness and index of refraction n=15 . The wavelength of the laser light in vacuum is L/10 and its frequency is F . In this problem, the constant c should not appear in any of your answers.


How long does it take for a short pulse of light to travel from one end of the glass to the other?
Express your answer in terms of some or all of the variables Fand L . Use the numeric value given for n in the introduction.

The speed of light in the glass will be c/n... or c/15 (or do you mean 1.5?)

The frequency of light remains unaltered so the wavelength decreases. Since c decreases by a factor of 15 then so does the wavelength.

wavespeed = freq * wavelength = F* L/10 * 1/15 (or 1.5?)

wavespeed = FL/150 [or FL/15 if n=1.5]

Now use time = distance / speed or thickness / speed.

Let the thickness be T (you've not stated what the thickness is), then

Time = T / [FL/150] = 150T/FL

or 15T/FL if n=1.5

An excited hydrogen atom emits a photon with a wavelength of 2625.5 nm.
In what region of the spectrum is this photon?
What is the frequency of this photon?
I am confused because the answer i keep getting is marked wrong online.
Anyone?

F = c/λ

f = frequency
c = speed of light = 2.9979x10^8 m/s
λ = wavelength = 2625.5 nm = 2625.5x10^-9 m

f = 2.9979x10^8 m/s / (2625.5x10^-9 m) = 1.1419x10^14 s^-1

******
maybe your having trouble with the prefixes...

1.1419x10^14 s^-1 = 114.19x10^12 s^-1 = 114.19 THz... terahertz

2625.5x10^-9 m = 2.6255x10^-6 m = 2.6255 μm.... micrometers
or
2625.5x10^-9 m = 2625.5 nanometers

either way
this is in the infrared region of the EM...

see here...
http://en.wikipedia.org/wiki/Image:Elec ... ectrum.png

What is the wavelength and frequency of light? Does light have a short or long wavelength compated with radio?

What is the wavelength and frequency of light? Does light have a short or long wavelength compated with radio waves?

Wavelength of visible light varies from 400 to 700 nm, i.e., 4 x 10^(-7) to 7 x 10^(-7) m. This is much less than the wavelength of radio waves which can from a few cm to a few km.
Frequency of visible light waves
= velocity of light / wavelength
= (3 x 10^8) / (4 x 10^(-7) = 7.5 x 10^16 Hz
to
= (3 x 10^8) / (7 x 10^(-7) = 4.3 x 10^16 Hz

Need to know for science test tomorrow.
I would appreciate it if no extremely complex words are used.

Wavelength λ has an inverse relationship to frequency f, the number of peaks to pass a point in a given time. The wavelength is equal to the speed of a wave type divided by the frequency of the wave.

Great additional explanation offederd on the website listed below.

The formula for frequency in my book says 1/T but my teacher used a different one and I can't figure out what it is. He also used a different formula for wavelength! I have a test in 9 hours!

S=f (lambda)

lambda is the upside down Y and is the wavelength
f is the frequency
and s is the wavespeed

I have a chemistry project that requires me to find this formula to solve a series of problems. I have searched for the answer but I have found serveral different answers, but I'm not sure which is correct.

V = f * wavelength

If you happen to be talking about light, v = c = 3 x 10^8 m/s

Need to know an easier way to find the wavelength and frequency than the book tells me how to do it. 11th grade chemistry honors class.
like the equations. if u have a wavelength of 4.8 x 10^8. what is the frequency. (speed of light= 3.00 x 10^8)

For any wave, the product of the frequency (f) times the wavelength (L) is equal to the propagation velocity (v):

v = f*L

If you know the wavelength and velocity, the frequency is given by:

f = v/L

If you know the frequency and velocity, the wavelength is given by:

L = v/f

For light propagating in a vacuum, of course, v = c = 2.998 *10^8 m/s, but this same relationship holds for sound waves, waves on a string or slinky, seismic waves from an earthquake, etc.. Naturally, the speed of these waves are quite different from c.

Just make sure you use the same units for time and length in all the variables (i.e., if frequency is in hertz (1/sec) then the speed needs to be expressed in distance per second, and if the wavelength is in cm, then the speed needs to be in cm per unit time.)