Answer:
she added more force, she went down a hill with more friction.
Explanation:
either one of them
The magnitude of the quantity and its direction.
What are you asking? And more info needs to be provided.
Answer:
Percentage change in tension is 3.8%
Explanation:
We have given initially frequency
= 440 Hz
Let tension in the string at this frequency is 
Now second frequency is 
Frequency in string is given by

From the relation we can say that


Percentage change in tension is equal to
%
So percentage change in tension is 3.8%