1. A student converts 100ft/min to 500in./s. Use dimensional analysis to explain why the students result is not reasonable.
2. Write the following questions in a ratio
*a 45 min long distance phone call costs $ 2.25. What is the cost per minute
*calculate the number of person-days to complete a job if 15 people work for 21 days.
THANKS!!!!
2. Write the following questions in a ratio
*a 45 min long distance phone call costs $ 2.25. What is the cost per minute
*calculate the number of person-days to complete a job if 15 people work for 21 days.
THANKS!!!!
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1) 100 ft / minute = 100/60 = 10/6 = 5/3 ft / second
This is less than 2 ft / second = less than 24" / second.
500" = 41.66 ft
This is not reasonable.
2) 45 min = 2.25
1 minute = 2.25 /45 =0.05 $ per minute
3) 15X21 = 315 man days
This is less than 2 ft / second = less than 24" / second.
500" = 41.66 ft
This is not reasonable.
2) 45 min = 2.25
1 minute = 2.25 /45 =0.05 $ per minute
3) 15X21 = 315 man days