Units
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Units
What unit does J.s^(-1) translate into, and how would we use this new unit to calculate the correct unit for finding wavelength, in say, the equation of λ=h (unit of J.s^(-1)/mv?
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Re: Units
It translates into kgm^2/s because a joule is kgm^2/s^2, and if you divide it by 1/s, it gets to this unit.
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Re: Units
Its important to remember that we use kg instead of grams for SI units. I know I always forget!
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Re: Units
Just another reminder too is that Herz = s^-1. I find it helpful to convert Hz to s^-1 so that if units are being multiplied or divided, it's easier to see how things cancel out.
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Re: Units
105002507 wrote:When do we use kg?
We use kg when we are calculating energy, since the units are in jules (kg·m^2·s^-2)
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Re: Units
I'm sure that it is important that you know the proper SI units for each term because there will be many problems which can be solved by canceling out, thus helping you find a corresponding answer for that problem in the simplest form.
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Re: Units
Will there ever be a time where we need to use megagrams or gigagrams or will we likely only go as big as kilograms?
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Re: Units
I think for the most part it would only go as far as kilograms, but in any case, if megagrams and gigagrams were necessary I think we would be provided a formula sheet to convert the numbers.
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Re: Units
If you ever forget unit conversions just remember:
K- King
H- Henry
D- Died
U- Unusually
D- Drinking
C- Chocolate
M- Milk
K- King
H- Henry
D- Died
U- Unusually
D- Drinking
C- Chocolate
M- Milk
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