I have multiple doubts related to the usage of singular or plural SI base units when written in both symbol as well as name.
I have framed this question under two parts, namely, Part (a) and Part (b). Each part has three sentences which I have written on the basis of my understanding.
Please answer these 6 sentences/questions.
This page says that while using prefix for e.g., centi as in centimeter, it is
l = 75 cm long.(correct) l = 75 cms long. (wrong)
- Does this rule is used for all SI prefixes (having powers of 10)?
- In this regard, we should be saying, or writing that, "how many cm are there in one metre?" (while saying we should say centimter or centimetres?)
Please strike-through the wrong SI unit in the following sentences.
My weight is 70 kg / kgs,
or My weight is 70 kilogram / kilograms.
and the page next to above web link says, we should write:
2.6 m/s, or 2.6 metres per second.
In this regard, we should say, or write:
- Its speed is 0.26 metres per second.
- This pipe is 0.75 metres long.
- How many cm are there in 2 metres?