Time Conversions
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Time Conversions
For [A]=[A]oe^-kt, there seems to always be conversions associated with the -kt and time, do you convert the k or the t to equal the same units (minutes, seconds, hours) as one another?
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Re: Time Conversions
Use the appropritate time conversions: 1 hr is 60 mins, 60 secs in 1 min, 24 hr in day, etc.Set up diagonal conversions to cancel units out and end in whatever time unit you need.
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Re: Time Conversions
Mya Majewski 1L wrote:if your k is in min^-1 and your t is in seconds then what do you do?
You can convert either one as long as it matches/is consistent with the other. You should try to see if the question specifies in what units it wants the answer.
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Re: Time Conversions
always use the units that the question initially gives you unless stated otherwise. so yeah convert everything to one type of unit. and don't forget conversions between kJ and J (unrelated sidenote)
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Re: Time Conversions
You can use any time unit as long as the same time unit is used for all values in the problem.
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Re: Time Conversions
So, it doesn't matter seconds or minutes as long as you have all the same units.
Re: Time Conversions
both should have the same units. it does not really matter what unit it is as long as units match
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Re: Time Conversions
The units should be the same so that they will cancel out when doing calculations. Also, sometimes, the question will ask for the answer in a particular unit.
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