Find the Length and Direction (When Defined) of U ×

question 81

Multiple Choice

Find the length and direction (when defined) of u × v.
- $\mathbf { u } = - \frac { 1 } { 2 } \mathbf { i } + \frac { 3 } { 2 } \mathbf { j } + \mathbf { k } , \mathbf { v } = \mathbf { i } + \mathbf { j } + 2 \mathbf { k }$

• A) \(2 \sqrt { 2 } ; - \frac { \sqrt { 2 } } { 2 } \mathbf { i } + \frac { \sqrt { 2 } } { 2 } j - \frac { \sqrt { 2 } } { 2 } \mathbf { k }\)
• B) \(8 ; \frac { 1 } { 4 } \mathbf { i } - \frac { 1 } { 4 } \mathrm { j } + \frac { 1 } { 2 } \mathbf { k }\)
• C) \(2 \sqrt { 3 } ; \frac { \sqrt { 3 } } { 3 } \mathbf { i } + \frac { \sqrt { 3 } } { 3 } \mathbf { j } - \frac { \sqrt { 3 } } { 3 } \mathbf { k }\)
• D) \(8 ; \frac { 1 } { 2 } \mathbf { i } - \frac { 1 } { 4 } \mathbf { j } - \frac { 1 } { 4 } \mathbf { k }\)

Correct practices for the maintenance and storage of microscopes to preserve their functionality.

Understand the effect of magnification changes on field diameter and working distance.

Recognize the orientation of specimens under a microscope.

Demonstrate knowledge of proper lens cleaning techniques for microscopes.

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Definitions:

Indirect Approach

A method of dealing with a situation or problem by not addressing it directly.

Supervisory Role

A position of authority overseeing the work of others, ensuring tasks are completed appropriately and efficiently.

Requests

Expressions or acts of asking for something, typically in a formal or polite manner.

Positive Words

Terms and phrases that invoke constructive, optimistic, and encouraging connotations, used to uplift and motivate.