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3 years ago

10

Which scientist developed the first model of the atom that showed the structure of the inside of an atom?

2 answers:

bulgar [2K]3 years ago

8 0

Answer: O Thomson

Step-by-step explanation:

The first model which is known as "Thomson atomic model" of the atom that showed the structure of the inside of an atom is developed by William Thomson. The model gave description of an inner structure of the atom theoretically.
His theory was supported by J J Thomson who had discovered electron.
He discovered negatively charged particle during a cathode ray tube experiment

So, the correct option is "Thomson" .

madam [21]3 years ago

7 0

Answer:

Thomson

Step-by-step explanation:

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3 years ago

In how many ways can 5 different novels, 4 different mathematics books, and 1 biology book be arranged on a bookshelf if

zalisa [80]

Question Continuation:

if (a) the books can be arranged in any order?

(b) the mathematics books must be together and the novels must be together?

Answer:

(a) 3628800 ways

(b) 17280 ways

Step-by-step explanation:

Given

$Novels = 5$

$Mathematics = 4$

$Biology = 1$

Solving (a): In any order

This implies that there is no restriction and the novels, mathematics and biology book are just seen as books.

Total number of books is:

$N = Mathematics + Novel + Biology$

$N = 4+5+1$

$N = 10$

The number of arrangement is:

$10! = 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1$

$10! = 3628800\ ways$

(b):

If the mathematics books are together, there are 4! different arrangements

If the novels are together, there are 5! different arrangements

Now, there are 3 bundles.

The mathematics books as 1
The novels as 1
The biology book

This can be arranged in 3! ways.

Total number of arrangement is:

$Total = 4! * 5! * 3!$

$Total = 4*3*2*1 * 5*4*3*2*1 * 3*2*1$

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6 0

3 years ago

If x= -2 and y= 12,then 2(3x3+2y2)=

vladimir1956 [14]

Answer:

$528$

Step-by-step explanation:

we have

$2(3x^{3} +2y^{2})$

For $x=-2, y=12$

substitute the value of x and the value of y in the expression

$2(3(-2^{3}) +2(12^{2}))$

$2(3(-8) +2(144))$

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4 years ago

Scrat [10]

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<span>27 m²
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4 years ago

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