y(x,t) = (0.9 cm) sin[(1.2 m -1)x - (5.0 s -1)t] The amplitude of a variable is a measure of its change over a single period. The maximum height observed in the wave is called as Amplitude.It is denoted by A and is given in decibels (dB) .The sine wave is represented as. Where A is amplitude and $\omega$ is angular frequency.
The units of the amplitude depend on the type of wave, but are always in the same units as the oscillating variable. A more general representation of the wave equation is more complex, but the role of amplitude remains analogous to this simple case. Peak-to-peak amplitude is the change between peak (highest amplitude value) and trough (lowest amplitude value, which can be negative). With appropriate circuitry, peak-to-peak amplitudes of electric oscillations can be measured by meters or by viewing the waveform on an oscilloscop There is no formula for amplitude as such. It is calculated directly from the graph of the wave. That is the maximum displacement from the equilibrium position is the amplitude. If we consider the sine wave then we have a formula which related the peak to peak amplitude to the rms amplitude of the sine wave. Semi amplitude = +V or-V. Root Mean Square Amplitude: It is also called RMS is the root of the mean of the squared value of the maximum distance from the baseline of the wav Amplitude is the magnitude of change in the oscillating variable with each oscillation within an oscillating system. For example, sound waves in air are oscillations in atmosp … heric pressure and their amplitudes are proportional to the change in pressure during one oscillation. The amplitude of a sound wave is the measure of the intensity of the sound, such as loudness. F is the frequency of the wave. The amplitude of a variable is a measure of its change over a single period. The maximum height observed in the wave is called as Amplitude. It is denoted by A and is given in decibels (dB) . The sine wave is represented as. Where A is amplitude and $\omega$ is angular frequency. The Amplitude Formula is given by. Where D is the distance traveled by the wave and. Amplitude Formula is used to the amplitude of the given wave if its distance and frequency are known.  The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period). There are various definitions of amplitude (see below), which are all functions of the magnitude of the difference between the variable's extreme values. Peak-to-peak amplitude is the change between peak (highest amplitude value) and trough (lowest amplitude value, which can be negative). With appropriate circuitry, peak-to-peak amplitudes of electric oscillations can be measured by meters or by viewing the waveform on an oscilloscope Part (a): The wave's amplitude, wavelength, and frequency can be determined from the equation of the wave: y(x,t) = (0.9 cm) sin[(1.2 m -1)x - (5.0 s -1)t]. The amplitude is whatever is multiplying the sine. A = 0.9 cm. The wavenumber k is whatever is multiplying the x: Let's say that for a particular wave on a string the equation is: y(x,t) = (0.9 cm) sin[(1.2 m -1)x - (5.0 s -1)t]. (a) Determine the wave's amplitude, wavelength, and frequency. (b) Determine the speed of the wave. (c) If the string has a mass/unit length of m = 0.012 kg/m, determine the tension in the string. The quantities that are used for waves include Frequency, amplitude, wavelength, and wave speed. The amplitude of wave is determined by measuring the graphical representation of wave. It is distance of wave from its centre line to its still position. Semi amplitude = +V or-V. Root Mean Square Amplitude: It is also called RMS is the root of the mean of the squared value of the maximum distance from the baseline of the wave. If we consider the sine wave then we have a formula which related the peak to peak amplitude to the rms amplitude of the sine wave. In amplitude modulation, the amplitude or strength of the carrier oscillations is what is varied. For example, in AM radio communication, a continuous wave radio-frequency signal (a sinusoidal carrier wave) has its amplitude modulated by an audio waveform before transmission. Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. In amplitude modulation, the amplitude (signal strength) of the carrier wave is varied in proportion to the waveform being transmitted.
https://en.wikipedia.org/wiki/Amplitude http://physics.tutorvista.com/waves/amplitude-of-a-wave.html http://www.answers.com/Q/What_is_the_equation_for_finding_the_amplitude_of_a_wave http://formulas.tutorvista.com/physics/amplitude-formula.html https://en.wikipedia.org/wiki/Amplitude http://physics.bu.edu/~duffy/sc528_notes04/wave_problem1.html http://physics.tutorvista.com/waves/amplitude-of-a-wave.html https://en.wikipedia.org/wiki/Amplitude_modulation
what is the equation for amplitude of a wave