An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
\boxed{The war resulted in many casualties for all of the countries that participated.}
Explanation
Problem Analysis We are given a table showing the military casualties of World War I for Great Britain, Germany, France, and the United States. The table includes data on soldiers killed, soldiers wounded, and all casualties for each country. Our objective is to determine which conclusion can be drawn from the chart.
Solution Plan Let's analyze the data in the table to compare the number of casualties for each country. We will evaluate each of the given conclusions based on the data in the table.
Evaluating Conclusion 1 Conclusion 1: "The number of casualties were small compared to the size of the countries involved." This conclusion requires external information about the size of the countries involved, which is not available in the table. We can only assess the magnitude of casualties relative to each other based on the provided data.
Evaluating Conclusion 2 Conclusion 2: "France suffered the greatest number of casualties because it did the most fighting." To check this, we look at the 'All Casualties' column. The table shows:
Great Britain: 3,190,235
Germany: 7,142,558
France: 6,160,800
United States: 323,018 Germany has the greatest number of casualties (7,142,558), not France. Therefore, this conclusion is incorrect.
Evaluating Conclusion 3 Conclusion 3: "The war resulted in many casualties for all of the countries that participated." Observing the numbers in the 'All Casualties' column, we see that all countries listed have a significant number of casualties (ranging from 323,018 to 7,142,558), suggesting this statement is likely true.
Evaluating Conclusion 4 Conclusion 4: "Great Britain had the greatest number of casualties because it fought the longest." As determined in step 4, Germany has the greatest number of casualties, not Great Britain. Therefore, this conclusion is incorrect.
Final Answer Based on our analysis, the conclusion that is best supported by the data in the table is: "The war resulted in many casualties for all of the countries that participated."
Final Conclusion The correct conclusion is that the war resulted in many casualties for all of the countries that participated.
Examples
Understanding casualty data helps in assessing the impact of historical events. For example, analyzing casualties in different battles allows historians to understand the intensity and scale of conflicts, which informs broader analyses of war strategies, resource allocation, and societal impacts. This kind of data analysis is also crucial in modern military planning to minimize losses and optimize resource use.
Approximately 2.81 × 1 0 21 electrons flow through the device when a current of 15.0 A is delivered for 30 seconds. This is calculated by first finding the total charge and then dividing by the charge of a single electron. Hence, a significant number of electrons flow through the device in this period.
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