Question:
Pa(Pascal) is the unit for _______.
Answer:
Pressure
Question:
Pitch of high frequency sound is ______.
Answer:
High
Question:
Mach number is used in connection with the speed of ______.
Answer:
Aircraft
Question:
What is the velocity of sound in water at room temperature?
Answer:
1450 to 1498 metre per second
Question:
Voice of a friend is recognized by its ______.
Answer:
Quality
