Questions & Answers about Brennvidden er lang.
Because Norwegian usually puts the definite article on the end of the noun.
- brennvidde = focal length
- brennvidden = the focal length
So English uses a separate word the, but Norwegian often uses a suffix instead.
Because lang is not directly modifying the noun inside a noun phrase here. It comes after er and works as a predicative adjective.
Compare:
- en lang brennvidde = a long focal length
- Brennvidden er lang = The focal length is long
So before the noun, lang is attributive; after er, it is predicative.