An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
A current of 15.0 A flowing for 30 seconds results in a total charge of 450 coulombs. This charge corresponds to approximately 2.81 x 10^21 electrons flowing through the device. Therefore, about 2.81 billion billion electrons flow during this duration.
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The table provides the percentage of total government revenue from oil in Nigeria between 1967 and 1990.
Analyze each option by comparing the percentages in the given years.
Determine that Nigeria's oil revenue peaked during 1975 with 80.81%.
Conclude that the most accurate conclusion is: Nigeria’s oil revenue peaked during 1975.
Explanation
Understanding the Problem We are given a table showing the percentage of total government revenue from oil in Nigeria between 1967 and 1990. We need to determine which of the given conclusions can be drawn from the data in the table.
Analyzing the Options Let's analyze each option:
Nigeria was generating less revenue from oil in 1987 compared to previous years.
In 1987, the percentage was 75.80%. In 1975, it was 80.81%. So, this statement is true because 75.80% < 80.81%.
Nigeria was generating greater revenue from oil in 1990 compared to previous years.
In 1990, the percentage was 17.10%. In 1967, it was 18.26%. So, this statement is false because 17.10% < 18.26%.
Nigeria's oil revenue peaked during 1975.
The highest percentage in the table is 80.81%, which occurred in 1975. So, this statement is true.
Nigeria's oil revenue decreased during 1987.
In 1983, the percentage was 67.00%. In 1987, it was 75.80%. So, this statement is false because 75.80% > 67.00%. The revenue increased, not decreased.
Identifying Correct Conclusions Based on the analysis, the correct conclusions are:
Nigeria was generating less revenue from oil in 1987 compared to previous years.
Nigeria's oil revenue peaked during 1975.
Choosing the Best Conclusion The question asks for what conclusion can be drawn . Since only one answer can be selected, we need to determine which of the true statements is the most accurate conclusion based solely on the data provided. The statement 'Nigeria's oil revenue peaked during 1975' is a direct observation from the data, whereas the statement 'Nigeria was generating less revenue from oil in 1987 compared to previous years' requires comparing 1987 to some previous years. Therefore, the most accurate conclusion is that Nigeria's oil revenue peaked during 1975.
Final Answer Therefore, the best conclusion that can be drawn from the chart is that Nigeria's oil revenue peaked during 1975.
Examples
Understanding trends in oil revenue can help governments make informed decisions about economic planning and diversification. For example, if a country's oil revenue is declining, the government may need to invest in other sectors of the economy to ensure long-term stability. Similarly, analyzing peak revenue periods can provide insights into factors that contributed to economic success and inform future policies. This type of analysis is crucial for resource-dependent economies to manage their wealth effectively and promote sustainable development.
