A Wave on a String,mass Per Unit Length of 0

question 21

Multiple Choice

A wave on a string,mass per unit length of 0.2 g/cm,travels in the z direction with the string displaced in the x and y directions as described by the equations
x = 5sin(kx - ωt) cm,and
Y = 5cos(kx - ωt) cm.
The wavelength and the wave velocity are γ = 11 cm and v = 6 cm/s respectively.What average power is transmitted along the string?

• A)3.5 × 10^-5 W
• B)3868 W
• C)8.9 × 10^-7 W
• D)5.9 × 10^-6 W

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Definitions:

Id

Part of the psychic apparatus in Freudian psychoanalysis, representing the unconscious, instinctual part of the mind that operates based on the pleasure principle.

Superego

In Freudian psychoanalysis, represents the ethical component of personality, regulating the impulses of the id according to moral and societal norms.

Defense Mechanisms

Psychological strategies brought into play by individuals or the mind unconsciously to protect against anxiety, social sanctions, or to provide a refuge from reality.

Conscious

The state of being aware of and able to think about one's own existence, sensations, thoughts, surroundings, etc.