Dropping a coin to find out the depth of a well
Question: You released a coin in order to find the depth of a well. The time between dropping the coin […]
Tag: sound
Music, sounds and waves… It’s amazing!
We are actually surrounded by many types of waves. Musical instruments are familiar to us to appreciate the waves of […]
Your age and hearing ability!
How high frequency do you hear? Human could hear sound from 20 Hz to 20,000 Hz, but if one ages, […]