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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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In what way can geographic position be considered a control of temperature? In what way can geographic position be considered a
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Answer:

Near water, change in elevation, or change in latitude.

A location at a high altitude will experience the cool summers and mild winters compared to a location at a low altitude.

Explanation:

Near water bodies, change in elevation, or change in latitude are geographic position that can be considered a control of temperature. If a location is present at a high altitude, it will experience cool summers and mild winters compared to a location at a low altitude because of lower pressure at the top. Lower pressure at higher altitudes is the main cause of colder temperature on top of a mountain than at sea level..

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Question 5: Consider two coastal regions at the same latitude. Region (1) is next a cold ocean current, and (2) is next to a war
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1- Option (C)

2- Option (A)

3- Option (B)

Explanation:

The warm ocean currents are responsible for the transportation of warm and moist air to the coastal region, whereas the cold ocean currents are responsible for carrying the cold and dry air to the nearby coastal areas.

Therefore, the region (1) will experience a cold and dry type of weather.

The stratosphere is the layer that is just above the troposphere and extends from a height of about 10 to 50 km above the ground surface. Here the temperature increases with the increasing height due to the presence of Ozone layer (O₃) that absorbs the incoming solar radiations.

Troposphere is the interior layer of the atmosphere that extends from the ground surface up to a height of about 10 km. Here, the temperature decreases with the increasing altitude. The air near the ground surface is compact and dense, due to which the temperature remains high. As the warm air rises up it interacts with the cold air that is situated over the warm air. Due to this, the air cools down and sinks to the bottom.

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