David Stands 2

question 42

Short Answer

David stands 2.5 m in front of a plane mirror.
(a) How far from David is his image in the mirror?
(b) If David moves away from the mirror at 1.5 m/s, how fast are David and his image
moving apart from each other?
(c) If David is 180 cm tall, how tall is his image in the mirror?

Differentiate between gases, liquids, and vapors under the classification of fluids.

Identify the components and their roles within hydraulic systems.

Understand hydraulic principles and how they apply to mechanical force transmission.

Calculate work and force in hydraulic circuits.

---

Definitions:

R Charts

Control charts used in statistical process control to monitor the range of variation within a sample, assessing the process stability over time.

Spread Measurement

A statistical tool used to describe the variability or dispersion of data points within a dataset.

Standard Deviation

An index to determine the range of deviation among values in a series.

Control Charts

A graph used to study how a process changes over time, displaying data points, a centerline, and control limits.