Wednesday, September 26, 2012
Question!!!!!!!!!!!!!!!1
Are we suppose to post test review stuff on this site? Or anime/manga stuff? Or anything?
Wednesday, September 12, 2012
Issue 23:Unit Conversion
The first one I'm doing this school year ^.^
This one is a simple one, it's easy to understand but also easy to make mistakes.
Okay....
Convert: 1000ft-->meters
Note: 12in=1 ft, 1in=2.54cm and 100cm=1 meters
We are going to use unit multipliers, since it's the easiest way to solve this unit conversion problems.
1000ft x 12 in x 2.54cm x 1m = You calculate the answer
1 1ft 1in 100cm
^ ^ ^
Why 1?, We put what we Never change the meaning of the question
It's because try to cancel out 1m is 100 cm, it can never be 1cm = 100m
We don't want the units. That would be incorrect! But do try to cancel out the equation
to change In this case, it's
the meaning feet
of the numerator
The correct answer is 304.8 meters
Cubic and Squaring >>> This is more complicated to remember. Well it's okay....
Convert 10m^3 to yd^3
Note that 1m=100cm, 2.54cm=1 in, 36 in= 1 yd. And that ^3 is the exponent (to the power of three)
10m^3 x (100^3)cm^3 x 1in^3 x 1yd^3 = Calculate the answer
1 1m^3 (2.54)^3cm^3 (36)^3 in^3
Since we are doing cubics, you have to cube the multiplier numbers.( For all the multipliers!! The original should be cubed already, we do not need to do that again, otherwise it's incorrect!!!)
The answer should be around 13.08yd^3
Okay, this last question is a little difficult since it needs to convert the time and distance
(I took this question from somewhere and reword it)
A man ran 100 yards in 9 seconds. Would he be speeding if he was running in the neighborhood with a speed limit of 35 mi/hour??
100yds =around 11.11 yd/s
9s
35 mi x 1hr x 1min x 1760yd = 154 yd = around 17.11 yd/s
1 hr 60min 60s 1mi 9s
I did the time first here then distance here
The answer was to match the yd/s
Therefore he wouldn't be speeding
This one is a simple one, it's easy to understand but also easy to make mistakes.
Okay....
Convert: 1000ft-->meters
Note: 12in=1 ft, 1in=2.54cm and 100cm=1 meters
We are going to use unit multipliers, since it's the easiest way to solve this unit conversion problems.
1000ft x 12 in x 2.54cm x 1m = You calculate the answer
1 1ft 1in 100cm
^ ^ ^
Why 1?, We put what we Never change the meaning of the question
It's because try to cancel out 1m is 100 cm, it can never be 1cm = 100m
We don't want the units. That would be incorrect! But do try to cancel out the equation
to change In this case, it's
the meaning feet
of the numerator
The correct answer is 304.8 meters
Cubic and Squaring >>> This is more complicated to remember. Well it's okay....
Convert 10m^3 to yd^3
Note that 1m=100cm, 2.54cm=1 in, 36 in= 1 yd. And that ^3 is the exponent (to the power of three)
10m^3 x (100^3)cm^3 x 1in^3 x 1yd^3 = Calculate the answer
1 1m^3 (2.54)^3cm^3 (36)^3 in^3
Since we are doing cubics, you have to cube the multiplier numbers.( For all the multipliers!! The original should be cubed already, we do not need to do that again, otherwise it's incorrect!!!)
The answer should be around 13.08yd^3
Okay, this last question is a little difficult since it needs to convert the time and distance
(I took this question from somewhere and reword it)
A man ran 100 yards in 9 seconds. Would he be speeding if he was running in the neighborhood with a speed limit of 35 mi/hour??
100yds =around 11.11 yd/s
9s
35 mi x 1hr x 1min x 1760yd = 154 yd = around 17.11 yd/s
1 hr 60min 60s 1mi 9s
I did the time first here then distance here
The answer was to match the yd/s
Therefore he wouldn't be speeding
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