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Describe light and water waves in terms of amplitude frequency wavelength and speed please?
RosalieK
Let me try. Tie a long rope (10 feet is plenty) to an anchor, such as a water hydrant or lamp post. Hold the free end in your hand. Pull the rope nearly taut by walking away. Stop and jiggle the end you are holding. You can see a traveling wave (see the related link) going from your hand to the anchor. When the frequency of your up-and-down motion is just right (by trial and error), the traveling wave becomes a standing wave (see the related link). A wave is characterized by its properties, namely, its amplitude (y in the Wave illustration), period (wavelength or lambda in Wave), and speed of travel (an easy way to visualize a traveling wave is looking at the "simple harmonic motion" illustration in Wave and see how fast the peak is moving to the right of the picture; speed is how far [meters] the peak moves per second). A water wave is easy to visualize -- all three properties are obvious to human eyes. Light is an electromagnetic (EM) wave, which cannot be seen. However, if you have ideal electric field detectors (can detect any EM wave in intensity, frequency, and polarization; does not interfere with the wave), you can place a detector at regular intervals apart and see how the reading of each detector changes with time. The readings will resemble that of the traveling water wave. To reiterate what the illustrations display: amplitude = intensity of the wave = half of the peak-to-trough (or peak-to-peak in Electrical Engineering speak; confusing, isn't it?). wavelength = the true peak-to-peak (meaning not the peak-to-trough representation) distance measured in a snapshot (taking a still picture from a camera) of the wave or EM detector readings.
EM frequency = speed of light / wavelength water-wave frequency = speed of the water wave / wavelength
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Please use the relationship:Speed = frequency x wavelength
What is the frequency of blue light with wavelength of 4000 angstroms?
Frequency and wavelength are related by a formula. Please see the following link for more detailed information about this.
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Please use the relationship:Speed = frequency x wavelengthIn this case, you need to divide the speed by the frequency.
Do waves with longer wavelengths have less energy than waves with shorter wavelengths?
A high energy light will have a shorter wavelength than a low energy light. If the wavelength goes down, then the frequency goes up. When calculating energy in the equation, E=hv, frequency (v) is the variable, not the wavelength. So in the equation, if you wanted a more energy (E), you would have the frequency be large. For the frequency to be big, then the wavelength has to be low.
When frequency and voltage of an RC coupled amplifier are kept constant then what happens to the amplitude of output?
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A sound wave that has a higher frequency has a wavelength that is shorter or longer?
A wave with a high frequency has a low wavelength. Wavelength lambda and frequency f are connected by the speed cof the medium. c can be air = 343 m/s at 20 degrees celsius or water at 0 dgrees = 1450 m/s. c can be light waves or electromagnetic waves = 299 792 458 m/s. The formulas are: c = lambda x f f = c / lambda lambda = c / f
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