## SI Units

$c=\lambda v$

Soumya Ravichandran 4H
Posts: 62
Joined: Fri Sep 28, 2018 12:19 am

### SI Units

What other unit conversions are important to know for Test 2 other than that of nm to m?

Moryel Yashar 1J
Posts: 31
Joined: Fri Sep 28, 2018 12:15 am

### Re: SI Units

An important unit conversion needed for Test 2 is J=‎kg⋅m2⋅s−2.

Tessa Lawler 1A
Posts: 57
Joined: Fri Sep 28, 2018 12:18 am

### Re: SI Units

It's probably good to know all the meter/liter/gram conversions we covered in week one. For example, nano-, mega-, pico-. Additionally, the meaning of each unit is important to determine final units in a problem - see Hertz, Joules.

EllaBerry
Posts: 68
Joined: Fri Sep 28, 2018 12:29 am

### Re: SI Units

I would suggest learning all of them that you can (they will also be useful on further tests). But also make sure you know not only nm but pm as well because that often comes up in the practice problems.

Jasmine Reddy DIS 1E
Posts: 34
Joined: Fri Sep 28, 2018 12:17 am

### Re: SI Units

I would also recommend knowing how to convert from g to kg, as kg is the SI unit for mass.

705152867
Posts: 28
Joined: Fri Sep 28, 2018 12:18 am

### Re: SI Units

Study the prefixes for sure, just so you recognize things such as picometer (pm) and any other more uncommon ones, not just nm and m. Know how to convert from kg to g to mg too, as well as remembering SI units from the previous section we covered

Jessica Dharmawan 1G
Posts: 32
Joined: Fri Sep 28, 2018 12:15 am

### Re: SI Units

Should we also know conversions like M (mega)? It was on the homework so I'm just wondering