Find the Unit Vector in the Direction of V
- $$\mathbf { v } = - 5 \mathbf { i } - 12 \mathbf { j }$$

question 53

Multiple Choice

Find the Unit Vector in the Direction of v
- $$\mathbf { v } = - 5 \mathbf { i } - 12 \mathbf { j }$$

• A) \(\mathbf { u } = - \frac { 5 } { 13 } \mathbf { i } - \frac { 12 } { 13 } \mathrm { j }\)
• B) \(u = - 65 i - 156 j\)
• C) \(\mathbf { u } = \frac { 12 } { 13 } \mathbf { i } + \frac { 5 } { 13 } \mathbf { j }\)
• D) \(\mathbf { u } = - \frac { 13 } { 5 } \mathbf { i } - \frac { 13 } { 12 } \mathbf { j }\)

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Definitions:

Axon Terminal

The end part of an axon that makes synaptic connections with another nerve cell or with an effector cell.

Dendrites

Branch-like extensions of neurons that receive signals from other neurons and conduct them toward the cell body.

Synapse

The point of contact between two neurons through which electrical or chemical signals are relayed from one neuron to the other.

Synaptic Space

The small gap at the junction between neurons, through which neurotransmitters are released to facilitate neuronal communication.