Final answer:
A 'caption' in a graphic chart does not define the values for symbols; that's the role of a 'legend'. The position vs time graph of an object that is speeding up depicts a curve. The voltage may vary along a wire in a circuit, and a vector can have components forming a right-angle triangle.
Step-by-step explanation:
The statement 'A "caption" in a graphic chart defines the values for the symbols used in the chart' is false. The correct term for the element of a chart that defines the values for the symbols used is a legend or key. A caption, on the other hand, typically provides a brief explanation or title for the chart or image.
In regards to the other questions related to graphic representation and understanding of the material:
- The position vs time graph of an object that is speeding up is not a straight line; it will show a curve representing accelerated motion. Thus, the statement is false.
- In a circuit diagram, we cannot assume the voltage is the same at every point in a given wire unless it is a superconductor; typically, voltage may differ due to resistive losses, so the statement is false.
- A vector can indeed form the shape of a right-angle triangle with its x and y components. Therefore, the statement is true.
- When representing data graphically, be sure to include a title, properly labeled axes with scales and units, and use different symbols for each material or data set.