regularly
I'm not sure what you mean. If you meant do they play background music with the orchestra, then yes. You may not be able to hear violas that often because they usually don't have the melody but you might hear them and not even know it.
A collective noun for violas is a "group" or "cluster" of violas. While there isn't a widely recognized specific term unique to violas, these general terms can effectively describe a collection of them. In a more poetic sense, one might also refer to them as a "bloom" of violas, emphasizing their floral beauty.
No, the frost will not harm violas. They will not bloom in the winter but they will survive the frost.
There can be any number of violas in an orchestra. It most commonly depends on the conductor.
The plural form of viola is violas.
A full orchestra generally uses 12 violas.
How often should you change water pump in a boat
The plural form for the noun viola is violas.
with water
In most typical middle school and high school orchestras, the violas sit near the middle, in between the cellos and the 2nd violins. It goes like this: 2nd violins Violas 1st violins Cellos
you water them every hour
The plural is violas.