Express the Vector as a Product of Its Length and Direction

question 129

Multiple Choice

Express the vector as a product of its length and direction.
- $$6 i - \frac { 4 } { 3 } j - 4 k$$

• A) \(\frac { 22 } { 3 } ( \mathbf { i } - \mathbf { j } - \mathbf { k } )\)
• B) \(\frac { 22 } { 3 } \left( \frac { 9 } { 11 } \mathbf { i } - \frac { 2 } { 11 } \mathbf { j } - \frac { 6 } { 11 } \mathbf { k } \right)\)
• C) \(\frac { 22 } { 3 } \left( 6 \mathbf { i } - \frac { 4 } { 3 } \mathbf { j } - 4 \mathbf { k } \right)\)
• D) \(\frac { 22 } { 3 } \left( \frac { 9 } { 121 } \mathbf { i } - \frac { 2 } { 121 } \mathbf { j } - \frac { 6 } { 121 } \mathbf { k } \right)\)

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Definitions:

Asystole

A state of no cardiac electrical activity, leading to a lack of contraction of the heart and cessation of blood flow; essentially, cardiac arrest.

Pacemaker

An electronic device that is implanted in the body to regulate the heartbeat by delivering electrical impulses to the heart muscle.

AV Node

The Atrioventricular Node, a part of the cardiac conduction system that delays the transmission of electrical impulses from the atria to the ventricles.

Action Potentials

Quick changes in the electrical charge of a neuron's membrane, allowing the transmission of nerve impulses.