Graph the Expression on Each Side of the Equals Symbol $\mathrm { P } _ { 1 } = 0.004 \sin ( 14 \pi \mathrm { t } )$

question 302

Multiple Choice

Graph the expression on each side of the equals symbol to determine whether the equation might be an identity.
-Two low-frequency sound waves with similar frequencies, producing the pressures $\mathrm { P } _ { 1 } = 0.004 \sin ( 14 \pi \mathrm { t } )$ and $\mathrm { P } _ { 2 } = 0.003 \sin ( 20 \pi \mathrm { t } )$ , combine to form a pressure $\mathrm { P } = \mathrm { P } _ { 1 } + \mathrm { P } _ { 2 }$ . The variable $\mathrm { t }$ is time measured in seconds. Graph $\mathrm { P }$ in $[ 0,1.2 , .05 ]$ by $[ - 0.01,0.01,0.001 ]$ and use the graph to determine the frequency of the displayed beats.

• A) 10 beats per second
• B) 3 beats per second
• C) 7 beats per second
• D) 6 beats per second

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Definitions:

Lactate Fermentation

This refers to an oxygen-free biochemical pathway through which glucose or six-carbon sugars are processed into energy for the cell and lactate as a metabolic end-product.

Creatine Phosphate

A phosphagen used by muscles to store energy for short bursts of activity, acting as a reserve to rapidly regenerate ATP, the primary energy carrier in cells.

Aerobic Respiration

The process by which organisms use oxygen to turn food into energy, a crucial part of cellular metabolism.

ATP

Adenosine triphosphate, a molecule that carries energy within cells, being essential for a multitude of cellular functions.