Answer:
d). It is easier to make a large reflecting telescope than a large refracting telescope.
f). A reflector can collect more light than a refractor.
Explanation:
A telescope is a device that is used to observe distant objects by the use of lenses and mirrors. It is also used to observe different distant objects by their reflection, absorption, emission or the reflection of the electromagnetic radiations.
Most of the professional telescopes are reflectors because :
1. The reflected telescope is able to receive more of the light when it reflects all the light falling on surface. And it is easier for making a large telescope rather then making large lenses for the refracting telescope. So it is easier to make large reflecting telescope than a large refracting telescope.
2. A reflected telescope receives all the wavelength of the light and it reflects all the light falling on the surfaces where it is refracted telescope that contains lenses cannot absorbs all the light and causes the chromatic aberration.
To graph this inequality, start with an open dot on -2.
We use an open dot because n is
greater than -2 but n is not equal to -2.
Next we draw an arrow to the right
to represent all numbers greater than -2.
I have graphed this inequality below too.
The graph below is my own work.
This should correspond to the first answer choice.
The advantage of using passive or active solar systems was these systems release low amounts of carbon dioxide or other pollutants. Thus, Option C is the correct statement.
<h3>What is the benefit of using Passive or active solar systems?</h3>
One of the best reasons to use effective solar technology is to reduce your energy bills. Active solar systems can include expensive hardware, and Passive solar systems may create the cost of renovating your home, but a reduction in your utility bills will ultimately outweigh the costs.
Thus, Option C is the correct statement.
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Answer:
(d) Tailed Star
Explanation:
The solar system are planetary bodies made up of the Sun and nine planets which rotate around the sun or have revolution around each other to cause seasons of the year or climatic conditions.
The Morning Star and Evening Star are used to describe Venus, one of the planets. The Pole Star is another member of the solar system, but the Tailed Star is not a member of the solar system.
Flash floods are dangerous because they usually take place clearly rapid because of heavy rain, rain from hurricanes, and many others. Like normal floods, flash flooding can damage houses and result in important flooding causing harm to vehicles, strength strains, and buildings. i'm hoping this facilitates!
A flood is an overflow of water onto land this is normally dry. Floods can happen almost anywhere. they could cowl a place with only a few inches of water or they could convey enough water to cowl the roof of a residence. Floods may be risky for communities, lasting days, weeks or sometimes even longer.
A flood occurs whilst water from a river , lake , or ocean overflows onto the land round it . an excessive amount of rain or melting snow are the principle reasons of floods . every so often the soil in the ground can make a flood worse. this is because whilst rain falls, the soil normally soaks it up like a sponge.
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