An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
Use the first column (week number) for the x axis.
Use the second column (plant height) for the y axis.
Plot the data in a line graph.
This will effectively show the growth trend over time. The best way to display the data is: Use the first column of data for the x axis the second column for the y axis and plot the data in a line graph to show the growth trend.
Explanation
Understanding the Problem We want to determine the best way to display the given data for analysis, focusing on showing the growth trend of the plant. The data includes the week number, plant height, and plant growth (difference in height from the previous week). We need to choose the most effective visualization method from the given options.
Analyzing the Options Let's analyze the options:
Chart with individual measurements: This option suggests including all individual measurements before averages were calculated. While more complete, it might not be the most effective way to visualize the growth trend directly.
Pie chart: A pie chart is suitable for showing proportions of a whole. In this case, it's not ideal for showing the growth trend over time.
Line graph with week on the x-axis and height on the y-axis: This option is a good candidate for visualizing the growth trend, as it plots the height against time (week number).
Line graph with week on the y-axis and height on the x-axis: This option is less conventional and might not effectively represent the growth trend as time is usually plotted on the x-axis.
Choosing the Best Visualization Method Comparing the options, a line graph with the week number on the x-axis and the plant height on the y-axis is the most suitable for visualizing the growth trend. This is because it directly shows how the plant height changes over time.
Final Answer Therefore, the best way to display this data for analysis is to use the first column of data (week number) for the x axis, the second column (plant height) for the y axis, and plot the data in a line graph to show the growth trend.
Examples
Imagine you're tracking the sales of a new product each month. Using a line graph with months on the x-axis and sales figures on the y-axis helps you quickly see if sales are increasing, decreasing, or staying steady over time. This visual representation makes it easier to identify trends and make informed decisions about marketing and production.
To calculate the number of electrons flowing through an electric device delivering a current of 15.0 A for 30 seconds, we find that a total charge of 450 coulombs passes through. Dividing this by the charge of a single electron (approximately 1.6 × 1 0 − 19 C ) gives us around 2.81 × 1 0 21 electrons. Hence, about 2.81 sextillion electrons flow through the device during that time.
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