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3 years ago

Now that potential Earth-like planets have been identified, what is the next step in understanding these planets?

Geography

1 answer:

boyakko [2]3 years ago

6 0

Answer:

Once Earth-like planets are identified, the next step would be to check the habitability.

Explanation: 

Space exploration is meant to understand the outer celestial structures by developing and implementing space technologies. Once the objects are traced out, next step would be to check the habitability.

This includes various features like climate, temperature, water composition, UV light etc. Ultra Violet radiations could help to start life on any planet as they are the building blocks of life.

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itan's orbital radius is about 1222000 km and its orbital period is just under 16 days. From this information, estimate the mass

maksim [4K]

Answer:

$5.67\cdot 10^{26} kg$

Explanation:

For a satellite in orbit around a planet, the gravitational force between the planet and the satellite is equal to the centripetal force that keeps the satellite in circular motion.

So, we can write:

$\frac{GMm}{r^2}=m\frac{v^2}{r}$

where

G is the gravitational constant

M is the mass of the planet

m is the mass of the satellite

r is the orbital radius of the satellite

v is the speed of the satellite

The equation can be rewritten as

$M=\frac{v^2r}{G}$

Also, we can write the orbital speed as the ratio between the length of the orbit (circumference of the orbit) and orbital period, T:

$v=\frac{2\pi r}{T}$

Substituting into the equation for M,

$M=\frac{4\pi^2 r^3}{GT^2}$

Here we have:

$r=1,222,000 km = 1.222\cdot 10^6 km = 1.222\cdot 10^9 m$ is the orbital radius

$T=16 d \cdot 86400 s/d=1.38\cdot 10^6 s$ is the orbital period

Substituting, we find the mass of the Saturn:

$M=\frac{4\pi^2 (1.222\cdot 10^9)^3}{(6.67\cdot 10^{-11})(1.38\cdot 10^6)^2}=5.67\cdot 10^{26} kg$

4 0

3 years ago

If you could talk to a geographer, what would be some of the questions you would ask them?

ozzi

Answer: HOW do you not get bored of your JOB???

Explanation:

3 0

3 years ago

Read 2 more answers

One way to reduce uncertainty is to increase the number of specific and general environmental forces that are interconnected. Be

oksano4ka [1.4K]

Answer:

False

Explanation:

The environment is dynamic whole understanding it imparts is quite essential as to reduce the uncertainties one does not need to increase the flow of general environment and specific forces.

This may create a reverse loop in the system and create hindrances in the environmental settings. As the environment is likely to create opportunities for the growth and development of man and his surroundings.

Because if one creates a positive change does not necessarily mean that the change may be positive such as a rise in temperature in summer or the reaction of the body etc. Taking the example of climate change that is the biggest system on earth is due to the man's impact on earth which has reacted to him.

6 0

3 years ago

Scientists in the United States, Europe, and Africa have now suggested that the hippopotamus is a relative of the whale. Earlier

koban [17]

Answer: The Information which is recently discovered that there is a connection between hippopotamus and whales suggests that:

Both hippopotamus and whales have a common ancestor which brings about the similarity in their genetic system.

Explanation: Research has been debating the issue for years because the source of the relationship date back to a 40 million years old ancestor of the two species.

There is a little pointer which is that both of them can survive in water.

4 0

3 years ago

Which of the following was NOT an observation that supported the original continental drift hypothesis as posed by its originato

Over [174]

Answer:

Option (C)

Explanation:

The continental drift hypothesis refers to the large scale, slow motion of continents over the surface of the large ocean basins and it was discovered by Mr. Alfred Wegener. He contributed some evidence regarding this continental drift hypothesis, such as the matching of the continental margins, finding similar fossils in distant continents, finding similar rock types as well as structures present in them. The movement of glaciers and their changing patterns were also observed to prove this theory.

But, of all the given options, one observation does not support the hypothesis, i.e. the lithosphere showing ductile nature in comparison to the brittle rock behavior in the layer of the asthenosphere.

In the brittle zone, the rocks fractures due to the force acting on it, whereas, in the ductile zone, the rocks tend to flow during the time of deformation.

Thus, the correct answer is option (C).

5 0

3 years ago