Probably but not at default I dont think.

Why not set up the inbuilt google search to open in a new tab when you enter text, its what i do.

Or look for "tabbrowser preferences" extension, allows more settings to be changed.

 

Here you go mate,

http://www.cusser.net/extensions/tabhomepage/

Just the thing

 

theres also one here on the direct firefox extensions page https://addons.mozilla.org/extensions/moreinfo.php?id=777&application=firefox

 

Thats the same one mate

 

i use tabmix plus. more options for tabs than you can shake a stick at....

http://tmp.garyr.net/

 

I use Tabmix, and it's a really good program. Well worth a look!

 

If you keep your bookmarks open, simply CTRL+Left Mouse click a bookmark. That will open it up as as new tab.

 

Or click the wheel on your mouse where possible