No...they are tall and slender not round and short.
Yes, this light comes with 40-Watt on the website.
With these CFL's it's on or off and nothing in between. Look for as product that specifically states "dimmable" as this model is Instant On, Not Dimmable
If you are asking do they produce less heat than a standard incandescent build then yes. Much less heat that a traditional light bulb.
Feit Electric does make bulbs at 3000 however they have shifted them to LED.
You may need to order these online as CFL's are being phased out in favor of LED. You can have them shipped to your home or to the store and pick them up.
Yes, I use them in my fan light in the kitchen. Never a problem.
The specified dimensions are 14.875 x 13 x 9 inches where 9 inches is the height. I suspect this is package dimensions rather than bulb dimensions.
Yes, these can be used instead of incandescent candelabra bulbs.