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Artist 52 [7]
3 years ago
7

Which items did Mendeleev write down on note cards while he was observing

Physics
2 answers:
ziro4ka [17]3 years ago
8 0

Answer:

A. Buoyancy.

hope it helps

<h2>stay safe healthy and happy..</h2>

Alinara [238K]3 years ago
7 0

Mendeleev wrote down atomic mass

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Sound is faster than light that is why we hear thunder before we see lightning
Umnica [9.8K]

Answer:

false

Explanation:

sound travels slower than light. that is why we see lightning before we hear the thunder

8 0
3 years ago
Scientists are constantly exploring the universe, looking for new planets that support life similar to the life on
Molodets [167]
The answer would be “B” because humans would need water, protection from radiation so we don’t melt or burn to death lol, and a gaseous atmosphere because we would need oxygen.
6 0
3 years ago
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The radius of the earth is 6378 km. What is the diameter of the earth in meters?
Nesterboy [21]
To determine the diameter of the earth in metres first multiply the original value by 2.

6378 X 2 = 12 756 km.

Then convert km - m

1 km = 1000 m
12 756 km = ? m

12 756 • 1000 = 12 756 000 = 12 756 000 m or 1.2756 X 10 ^ 7 m

The final solution for the diameter is 1.2756 X 10 ^ 7 m.
7 0
4 years ago
Simplifying fractions<br>30 over 54​
Veronika [31]

Answer:

5/9

Explanation:

First, find a common factor for 30 and 54.

30 and 54 can both be divided by 2.

30 divided by 2 = 15

54 divided by 2 = 27

So, your new fraction is 15/27.

However, don't stop there.

15 and 27 can both be divided by 3 as well.

15 divided by 3 = 5

27 divided by 3 = 9

So, your final answer is 5/9.

I hope this helps! :)

4 0
4 years ago
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The electric eye that prevents an elevator door from closing when you are in the doorway relies upon which physics principle?
goblinko [34]
It's Photoelectric Effect, I just a test with this same question. I am not good for explaining exactly how, but I was right.
3 0
3 years ago
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