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Questions in computers-and-technology

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - This code from the Polling case study polls.select_dtypes('object').head() date_cols = ['startdate','enddate'] polls[date_cols] = polls[date_cols].apply(pd.to_datetime) a. selects the columns with the object data type and converts two of them to the datetime data type b. selects the columns with the object data type and converts one of them to the datetime data type c. displays the columns with the object data type and converts two of them to the datetime data type d. displays the columns with the object data type and converts one of them to the datetime data type

📝 Answered - What is the best definition of technology? A. Technology is replacing human workers with mechanical or electronic devices. B. Technology is applying scientific knowledge to find answers and fix problems. C. Technology is using fewer resources to manufacture goods more efficiently. D. Technology is hiring workers from all over the world to manufacture goods.

📝 Answered - This code from the Polling case study polls['gap'] = polls.clinton_pct - polls.trump_pct polls['state_gap'] = polls.groupby('state').gap.transform(func='mean') polls['swing'] = (polls.state != "U.S.") & (abs(polls.state_gap) < 7) a. adds a swing column that is True or False depending on whether: b. the absolute value of the difference between the Clinton and Trump percents for the state is less than 7 c. the absolute value of the average difference between the Clinton and Trump percents for the state is less than 7 d. the absolute value of the difference between the Clinton and Trump percents is less than 7 e. the absolute value of the average difference between the Clinton and Trump percents is less than 7 13. This code from the Polling case study polls['gap'] = polls.clinton_pct - polls.trump_pct g = sns.relplot(data=polls.query('state==["Michigan", "Florida"] & enddate > "2016-09"'), kind="line", x='enddate', y='gap', ci=None, col='state', col_wrap=2) creates a line plot for two states that: a. shows how the Clinton and Trump percents changed over time b. displays one subplot for each state that shows how the Clinton and Trump percents changed over time c. shows how the gap between the Clinton and Trump percents changed over time d. displays one subplot for each state that shows how the gap between the Clinton and Trump percents changed over time

📝 Answered - The computer education teacher at the elementary school loves the new technology that is being brought into classrooms. She believes that it can help improve a student's education and performance. These teachers are A) Luddites B) Late adopters C) Neo-luddites D) Technophiles

📝 Answered - A ______ allows multiple connections to a single signal. Without a ______, connecting to the Internet would not be possible. A ______ connects one or more networks and handles network traffic.

📝 Answered - Look at the spreadsheet below, then answer the question that follows. | | A | B | C | D | |---|----------|--------------|-----------|----------| | 1 | | Card number | Books out | Overdue? | | 2 | Patron 1 | 457845904675 | 3 | Yes | | 3 | Patron 2 | 109846205634 | 2 | No | | 4 | Patron 3 | 124978546302 | 7 | Yes | Which of the following was most likely used to apply red background and font to some of the cells in column D? A. cell attribution B. subtotal calculation C. VLOOKUP functions D. conditional formatting

📝 Answered - Traditionally, have the magnetic particles on a hard disk been aligned vertically, perpendicular to the hard disk's surface? True False

📝 Answered - Describe some barriers to implementing technologies in early childhood education. How could these be overcome?

📝 Answered - There are two parts to any storage system: the storage processor and the storage device. True or False?