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Chapter 2: Problem 35

Define amplitude and frequency. Write their SI units.

Short Answer

Expert verified
Question: Define amplitude and frequency, and provide their respective SI units. Answer: Amplitude is the maximum extent of a vibration or oscillation, measured from the position of equilibrium. In the context of waves, it is the distance from the crest of the wave to the midpoint. The SI unit of amplitude depends on the context but is typically measured in meters (m). Frequency is the number of occurrences of a repeated event per unit of time, and in the context of waves, it is the number of complete wave cycles that occur in a second. The SI unit of frequency is the Hertz (Hz), equivalent to one cycle per second.

Step by step solution

01

Definition of Amplitude

Amplitude is the maximum extent of a vibration or oscillation, measured from the position of equilibrium. In the context of waves, amplitude is the highest or lowest point of a wave - the distance from the crest of the wave to the midpoint (or the trough of the wave to the midpoint).
02

Definition of Frequency

Frequency is the number of occurrences of a repeated event per unit of time. In the context of waves, frequency is the number of complete wave cycles that occur in a second. It is an important property of waves and determines the wave's energy.
03

SI Unit of Amplitude

The SI unit of amplitude depends on the context in which it is used. Since amplitude is a measure of distance, it is expressed in units of length or displacement. In the case of mechanical waves (such as sound waves or water waves), amplitude is typically measured in meters (m).
04

SI Unit of Frequency

The SI unit of frequency is the Hertz (Hz). One Hertz is equivalent to one cycle per second. Hertz is used to describe the frequency of various phenomena, including sound waves, electromagnetic waves, and mechanical oscillations.

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