Converting SI units

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Aiden Metzner 4E
Posts: 52
Joined: Wed Sep 18, 2019 12:21 am

Converting SI units

Postby Aiden Metzner 4E » Sun Nov 03, 2019 11:24 pm

What is the rule for converting SI units on the test. Will we be penalised if we get the sig figs wrong?

Angus Wu_1A
Posts: 53
Joined: Fri Aug 02, 2019 12:15 am

Re: Converting SI units

Postby Angus Wu_1A » Sun Nov 03, 2019 11:41 pm

Yes, if we get significant figures wrong be will be docked points. As for converting SI units, I would say if the question specifies a unit for the answer, then go for the specific unit. If the question doesn't, then as long as it is an SI unit, (meter, kilogram, second, etc) then I think its fine.

William Francis 3C
Posts: 51
Joined: Wed Sep 18, 2019 12:20 am

Re: Converting SI units

Postby William Francis 3C » Sun Nov 03, 2019 11:46 pm

Also, I'd add that it's important to remember what SI units are used for constants, so that you can be sure the units cancel out in your calculations. For instance, lengths used in calculations involving Planck's constant should be in meters, masses should be in kilograms, and times should be in seconds since the unit for Planck's constant is m^2 kg s^-1.

Posts: 55
Joined: Wed Sep 18, 2019 12:17 am

Re: Converting SI units

Postby 505106414 » Fri Nov 08, 2019 1:59 pm

Do we need to write out and cross out every unit or is it safe to skip a few of these steps as long as our answer is in the correct unit?

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