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matrenka [14]
3 years ago
10

Pluto's mass was poorly known before 1978. what happened in that year to change this

Geography
1 answer:
iragen [17]3 years ago
5 0
<span>The answer is ‘The return echo of a radar pulse, sent many years before, returned to Earth allowing a Doppler shift measurement of its rotation rate’.  This allowed the astronomers to  calculate its centripetal force hence able to derive force by using the law of universal gravitation. </span>




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If u answer this I will mark u as Brainlyest......​
Lelechka [254]

1.Tainan=120dE

longitude difference=120-0=120

if 1degree= 4 minutes

120dg=(120×4)=480minutes

=8hrs

12:00pm + 8hrs

<h2> Ans=2000hrs or 8:00pm</h2>

<h2>Yukon =150dg W </h2><h3> 150×4=600minutes=10hrs</h3><h3> 12:00-10hrs=2:00am</h3><h2> =2:00AM</h2>

<h2> NOTE: if it's Degrees east you add by the time given and subtract by the time given when it's Degrees West</h2>

3 0
3 years ago
In my book there was a statement about agriculture: fields being SMALLER due to HIGHER population density. Shouldn't the fields
Eva8 [605]

Answer:

Fields should be bigger to feed more people, but they are smaller because people live on those lands.

Explanation:

A higher population density means that there are more people in an area. As there are more people, there is not enough space for all of them to live in the city, so new cities and towns emerge occupying the field's lands used for cattle raising and agriculture. There should be larger fields to feed all the population, but they become smaller because parts of them are now populated.

6 0
3 years ago
Energia vantului este utilizata pentru
Nadusha1986 [10]
Human use this wind flow, or motion energy, for the purposes: sailing, flying a kite, and even generating electricity. The terms “wind energy” and “wind power” both describe the process by which the wind is used to generate mechanical power or electricity.
6 0
3 years ago
The presence of which of the following geological features provides the best evidence that glaciers once covered an area? *
Lisa [10]
The presence of U-shaped valleys is the best evidence that glaciers one covered an area. The correct answer is B, U-shaped valleys. 
7 0
3 years ago
Which phrases describe sedimentary rock ​
Otrada [13]

Answer:

The sedimentary rock is a rock that has been made from other rocks that had existed in the Earth. The sedimentary rock has different layers of rock that can take form as gravel, stone, and maybe even a few gems inside.

Explanation:

The first step would be that the rock would be in liquid form, 2nd stage would be the sludge stage, which would contain both solids and liquids, then overtime, the sedimentary rock would form. The Sedimentary rock can also be made out of mud and sand that has been under countless pressure overtime. But you would be most able to find one near deserts, lakes, seas, and rivers. So bodies of water would give you the advantage to find this rock.

6 0
3 years ago
Read 2 more answers
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