A Wave on a Stretched String Is Reflected from a Fixed

question 17

Multiple Choice

A wave on a stretched string is reflected from a fixed end P of the string. The phase difference, at P, between the incident and reflected waves is:

• A) zero
• B) \(\pi\) rad
• C) \(\pi\)/2 rad
• D) depends on the velocity of the wave
• E) depends on the frequency of the wave

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Definitions:

Preventable Hazard

A risk or danger to health and safety that can be minimized or eliminated through proactive measures, planning, and awareness.

Nonlinear Dose Response

A relationship in which the effect of exposure to a substance does not directly correlate to the dose received, often observed with toxins and pharmaceuticals.

Threshold Level

The point at which a relatively small change or variation in external conditions can cause a rapid change in an ecosystem or in the properties of a substance.

Technological System

An organized arrangement of people, machines, and procedures designed to perform and control various functions and processes for achieving specific objectives.