The fundamental property of a propagating wave which depends only on the source and not the medium of propagation is the?
Metal cables are used as telephone wires because?
Musical instruments playing the same note can be distinguished from one another owing to the differences in their?
The sound of an electricity bell dies down slowly when air is slowly pumped out from a bottle because
During a thunderstorm, the sound is heard over a long time. this phenomenon is referred to as?
