The sound a penguin makes is typically spelled "hok hok" or "bray."
The sound a flute makes is typically spelled as "whistle" or "flutey."
The sound a buzzer makes when the answer is wrong is typically spelled as "bzzz" or "buzz."
The typical written expression for a yawn sound is "ho hum."
The sound a rooster makes is typically spelled as "cock-a-doodle-doo."
The sound your throat makes when clearing it is spelled "ahem."
rowr!
The sound a flute makes is typically spelled as "whistle" or "flutey."
Varooooom
The sound a buzzer makes when the answer is wrong is typically spelled as "bzzz" or "buzz."
The sound a goat makes is typically spelled "maa" or "bleat."
Ka-ching!
Unnh!
vroom
The typical written expression for a yawn sound is "ho hum."
The sound a rooster makes is typically spelled as "cock-a-doodle-doo."
The sound your throat makes when clearing it is spelled "ahem."
The sound of a bullwhip is a "crack," or possibly a "snap," but there does not seem to be a separate sound for the impact of a lash.