If you're talking about a certain street, yes you capitalize it, for example Main St. or Elm St.
You are going to the library on Main Street.
No, except at the beginning of a sentence because it is not a proper noun.
Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.
Yes, "Oak Street" should be capitalized because it is a proper noun referring to a specific street.
Yes, "PC" should be capitalized in a sentence.
You are going to the library on Main Street.
No, it would not be capitalized, but it should be pluralized.
No, except at the beginning of a sentence because it is not a proper noun.
No; not unless it's used as part of the street's title, e.g. Walnut Street.
Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.Yes.
No. Titles should be lower case when they are spelled out before a name (and are not at the beginning of a sentence). If titles are abbreviated, then they are capitalized. For example, Dr. Jones or doctor Jones. I hope that helped!
No. The "m" which is used to symbolize the unit metres is never capitalized. A capital "M" is used as the symbol for moles.
The temperature scale is Celsius (capitalized, or abbreviated °C).
Dodgeball is capitalized if it starts the sentence. But if dodgeball is used in the middle of a sentence it is not capitalized.
Yes, "Oak Street" should be capitalized because it is a proper noun referring to a specific street.
Please just give me the abbreviated version.
They are not proper nouns. They would not be capitalized in a sentence.