Answer:
The new time period is 
Explanation:
From the question we are told that
The period of oscillation is 
The new length is 
Let assume the original length was 
Generally the time period is mathematically represented as

Now I is the moment of inertia of the stick which is mathematically represented as

So

Looking at the above equation we see that

=>
=> 
=> 
Answer:
Q = 62383.44 Joules
Explanation:
Given that,
Mass of water, m = 710 gm
Initial temperature of water, 
Final temperature of water, 
The specific heat capacity of liquid water is, 
Heat transferred is given by :


Q = 62383.44 Joules
So, the amount of heat transferred is 62383.44 Joules. Hence, this is the required solution.
I would say your answer is B- Some of the chemical energy from the batteries is converted into heat energy.
Answer:
Mechanical waves require a medium in order to transport their energy from one location to another.
Sound waves are incapable of traveling through a vacuum. Slinky waves, water waves, stadium waves, and jump rope waves are other examples of mechanical waves; each requires some medium in order to exist.