Mcat Physics Ch. 7 Equations

Wave speed refers to the speed at which a wave moves through a medium, it is dependent on properties of both the medium and the wave itself.

The period is the time taken for one complete cycle of a wave. It is inversely proportional to the frequency, which represents the number of cycles per second.

Angular frequency is measured in radians per second, as it represents the rate of change of angular displacement with respect to time.

Intensity is a measure of power per unit area, which is represented in Watts per square meter (W/m^2). Joules represent energy, Kelvin represents temperature, and Amps represent electric current, none of which are units for intensity.

Sound Level is commonly measured in decibels (dB) as it is a unit used to quantify the intensity of sound.

The correct unit of measurement for change in sound level is decibels (dB), which is a logarithmic unit used to quantify sound levels.

Beat Frequency refers to the difference in frequency between two sound waves, which results in a periodic variation in loudness when heard together.

The wavelength of a standing wave in strings and open pipes depends on the boundary conditions imposed by the system. In strings, the fixed endpoints result in the wavelength being equal to twice the length of the string. In open pipes, the antinodes occur at both ends leading to the wavelength being four times the length of the pipe.

In a closed pipe, a standing wave is formed with an antinode at each end of the pipe. This results in the wavelength being twice the length of the pipe.

In a closed pipe, standing waves are formed with multiple harmonics, each having frequencies dependent on the length of the pipe. This results in a combination of different frequencies rather than a single fundamental frequency.