The Figure Shows Four Vectors $\overrightarrow { \mathrm { A } }$

question 64

Multiple Choice

The figure shows four vectors, $\overrightarrow { \mathrm { A } }$ , $\overrightarrow { \mathrm { B } }$ , $\overrightarrow { \mathrm { C } }$ , and $\overrightarrow { \mathrm { D } }$ , having magnitudes 12.0 m, 10.0 m, 8.0 m, and 4.0 m, respectively. The sum of these four vectors is

• A)16.4 m at an angle 77.8° with respect to +x-axis.
• B)16.4 m at an angle 12.3° with respect to +x-axis.
• C)19.5 m at an angle 77.8° with respect to +x-axis.
• D)19.5 m at an angle 12.3° with respect to +x-axis.
• E)8.20 m at an angle 77.8° with respect to +x-axis.

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Definitions:

Abbreviation

The act of shortening or condensing a word or phrase by omitting letters and using symbols or initial letters.

DTRs

Deep tendon reflexes; responses to muscle stimulation by a sudden stretch, tested by tapping the tendon with a reflex hammer.

Pacemaker Cells

Specialized heart cells that control the rhythmic beating of the heart by generating electrical impulses.

Cardiac Muscle

Specialized muscle tissue found only in the heart, responsible for the rhythmic contractions that pump blood throughout the body.