Question

Give reason for the following
(i) A bell ringing in vacuum can't be heard.
(ii) Sonali heard the sound of thunderbolt 5 second after she saw a flash of
lightning.
(iii) We have hair and wax in our ear canal​

Answer 1

Step-by-step explanation:

1. because sound had no medium to travell
2. because light travells faster than sound.
3. that the dust particle can't reach inside the ears. dust will stick out