What is exceeded when aircraft produce a sonic boom?

The speed of sound

What classic kids' show featured brightly colored characters named Tinky Winky, Dipsy, Laa-Laa, and Po? What animal does actor Chris Pratt famously train in "Jurassic World"? In which movie does Robin Williams disguise himself as a nanny? In Greek mythology, cornucopia is derived from the horn of which animal? In modern editions of Trivial Pursuit, what color category typically represents science questions?