Answer:
The frequency is
Explanation:
From the question we are told that
The frequency of the tuning fork is 
The beat period is 
Generally the beat frequency is mathematically represented as


The beat frequency is also represented mathematically as

Where
is the frequency of the piano
So
Maybe push or pull an object with a large amount of mass? you are force a (pushing through object) aka making contact. i hope i helped not good with physics :)
Answer:
90 degree hope it help :))
It started off with 68% less than it did at the peak, and later created a void and melted the remainder of the ice at about 92%
Answer:
prokaryotic cells have no nucleus but contain DNA.
I hope this helps