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miss Akunina [59]
3 years ago
12

The Sun is orbiting around the entire galaxy such that it completes a full orbit once every 2 × 10 8 years. Using careful measur

ements of phenomena known as masers, we have acurately measured the distance to the center of the galaxy to be approximately 8 kpc (kiloparsecs). This is enough information to calculate our orbital speed. (Assume that the path the Sun takes is a circle which has a circumference of C = 2 ? R .) Report your answer in kilometers per second.
Geography
1 answer:
svet-max [94.6K]3 years ago
7 0

Answer:

245.75 km/sec

Explanation:

We have given distance as 8 kilo parsec

We know that 1\ kilo\ parsec=3.086\times 10^{16}km

So 8 kilo parsec =8×3.086×10^{16} km=2.469×10^{17} km

We know that circumference = 2×Π×R

So circumference =2×3.14×2.469×10^{17} = 15.50×10^{17} km

We know that speed =\frac{distance}{time}

We have given time =2×10^8 year

=210^8×365×24×60×60 sec

So speed=\frac{15.5\times 10^{17}}{6.30\times 10^{15}}=245.75\ km/sec

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