true
true
False. For example; your name is ___________.
False
False
False!
false
true
False
false
false
It is false it's called compression
Sort of false - it was about 1.5 billion years ago.
false
No it is not true. When the temperature of the medium increases the speed of sound in that medium increases.
its false
False. The medium is assumed to be resting in any case. If you refer to the speed of the wave, in the case of most wave that is more or less independent of the wave's frequency.
False, They can use optical storage discs.
False. Medium-sized stars become white dwarfs. Only the most massive stars form black holes.