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Komok [63]
4 years ago
9

4.What did J. J. Thomson observe when he applied electric voltage to a cathode ray tube in his famous experiment?

Chemistry
2 answers:
Tpy6a [65]4 years ago
3 0
<h2>Answer 4:</h2>

Correct option is B

B.The glass opposite of the negative electrode started to glow.

<h2>Explanation:</h2>

In his experiment, tubes were two electric plates, producing a positive anode and a negative cathode, which he expected that it would deflect the rays. As he supposed, the rays were deflected by the electric charge, proving beyond doubt that the rays were made up of charged particles bearing a negative charge.

<h2>Answer 11:</h2>

Boron is a chemical element in the periodic table with symbol B and has atomic number 5.

Boron has two naturally occurring isotopes Boron-10 and Boron-11. The average atomic mass of these are calculated as

(10.01×0.198) + (11.01×0.802) =  10.81 amu

So, the average atomic mass of the Boron isotopes is 10.81 amu.

katrin [286]4 years ago
3 0
The answer to your question is <span>B.The glass opposite of the negative electrode started to glow.
</span>
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4 years ago
Electron configuration for Lithium.
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The answer to problem is [He] 2s1. Hope it helps

4 0
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8 0
3 years ago
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A bulldozer does 15,000 J of work lifting dirt 15 m up to get it out of a hole. How much force did the bulldozer use to accompli
nika2105 [10]

Answer:

<h3>The answer is 3000 N</h3>

Explanation:

The amount of force can be found by using the formula

f =  \frac{w}{d}  \\

w is the workdone

d is the distance

From the question we have

f =  \frac{15000}{5}  \\

We have the final answer as

<h3>3000 N</h3>

Hope this helps you

7 0
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