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Georgia [21]
3 years ago
6

Help, please :) I you can explain the answer it would help me a LOT. Tanks

SAT
2 answers:
lesya692 [45]3 years ago
7 0

Answer:

120 Mph

Explanation:

Anuta_ua [19.1K]3 years ago
7 0
I think that it would be 5 hours since:
If you calculate the average speed of both cars: (55mph + 65mph) = 120. 120/2 =60mph

And then they have 300 miles to travel and they are doing 60 miles in one hour (or 60mph).

So in 1 hour they will have travelled 60 miles.
In 2 hours they will have travelled 120 miles.
3 hours = 180 miles
4 hours = 240 miles
5 hours = 300miles

So the answer is 5 hours :-)
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The <em>effective nuclear charge</em> is the difference between the atomic number an element and the shielding constant. Hence, the atom which experiences the greatest nuclear charge is Sulphur, S.

<u>Calculating the greatest effective nuclear charge</u>, :

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For Sulphur, , S:

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