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The fundamental frequency of a string is given by:

where L is the string's length, T the tension and

the linear density of the string.
We can see that f1 is proportional to the square root of T:

.
This means that if the new tension is half the initial value, the new fundamental frequency will be proportional to

So, the new fundamental frequency will be
Answer:
I believe the answer is 5718.75. Respond if it is wrong please.
Explanation:
I used a calculator.
Answer:
Tycho's data let Kepler refine his model for planetary motion. It led him to create what we today call Kepler's three laws of planetary motion. The first law of planetary motion states: Planets move around the sun in an elliptical orbit, where the sun is one of the foci.
Explanation:
Johannes Kepler's most influential accomplishments in astronomy were his three Laws of Planetary Motion, which were used by Isaac Newton to develop his theory of universal gravitation.
I hope this helps
In vacuum, going at 2.99×10^8 m/s.