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HACTEHA [7]
2 years ago
14

100 points+Brainliest for correct answer

Mathematics
1 answer:
goblinko [34]2 years ago
6 0

Answer:

The electron moved down to an energy level and has an energy of

10.92 \times 10^{-19} \textsf{J}

Step-by-step explanation:

\textsf{initial energy level of electron}= 16.32 \times 10^{-19} \textsf{J}

\triangle E =\textsf{energy released}= 5.4 \times 10^{-19} \textsf{J}

A positive energy change means that the electron absorbs energy, while a negative energy change implies a release of energy from the electron.

Therefore, when an electron absorbs energy, the electron moves up to higher energy levels, and when an electron releases energy, it moves to lower energy levels.

\triangle E=E_2-E_1

\implies 5.4 \times 10^{-19} = 16.32 \times 10^{-19} -E_1

\implies E_1= 16.32 \times 10^{-19} -5.4 \times 10^{-19}

\implies E_1= 10.92 \times 10^{-19}

<u>Answer</u>:

The electron moved down to an energy level and has an energy of

10.92 \times 10^{-19} \textsf{J}

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victus00 [196]

Answer:

All you have to do is substitute the value of x= -3 into the equation, then

g(-3) = -2(-3)2 + 3(-3) = -2(9) -9 = -18 - 9 = -27

Step-by-step explanation:

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3 years ago
One quadratic function has the formula h(x) = -x 2 + 4x - 2. Another quadratic function, g(x), has the graph shown below
jeyben [28]
We are comparing maxima.  From the graph we know that the max of one graph is +2 at  x = -2.  What about the other graph?  Need to find the vertex to find the max.

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=-(x^2 - 4x + 4)       -2+4
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The 2 graphs have the same max, one at x = -2 and one at x = + 2.
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3 years ago
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What transformations are represented by the following coordinate graphing? (geometry)
Minchanka [31]

Answer:

(a,b) → (a,-b) : Reflection about x axis.

(a,b) → (a, b+5) : Translation of the point by 5 units up.

(a,b) → (b,-a) : Rotation by 90 degree clockwise.

Step-by-step explanation:

Given:

The transformation of points are given as:

(a,b) → (a,-b)

(a,b) → (a, b+5)

(a,b) → (b,-a)

Now, let us consider each transformation one by one.

(1) (a,b) → (a,-b)

Here, the order of the coordinates has not changed. But, the y coordinate of the point has changed. The y coordinate was 'b' and it has changed only its sign but not value. So, it is a transformation related to reflection.

In reflection, only the sign changes. Since, the 'y' coordinate sing is reversed, so, it is a reflection about x axis.

(2) (a,b) → (a, b+5)

Here, the 'y' coordinate of the point has changed. The change is from 'b' to 'b+5'. So, 5 is added to the y coordinate. As per transformation rules, if a positive number 'C' is added to the y coordinate, then the point shifts vertically up by 'C' units. Hence, there is a translation of 5 units up here.

(3) (a,b) → (b,-a)

Here, the 'x' and 'y' coordinates interchange their values and also the new y coordinate has its sign reversed. This happens in rotation.

We know that, (x, y) → (y, –x) is true when there is rotation by 90 degree clockwise.

So, the point (a,b) → (b,-a) is rotated by 90 degree clockwise.

5 0
3 years ago
PLEASEEEEEE SOMEONE HELP I WILL GIVE ALOT OF POINTS AND WHATVER ELSE PLEASEE
Triss [41]
Part A : formula for circumference = pi*D or 2piR
for circle A.... 8*pi=25.12
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pi=3.14

part B : formula for Area =
pi \times  {r}^{2}
for circle A.... 50.24=pi*(8/2)sqr...(because diameter/2= radius)
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pi=3.14

for circle B... 7.065=pi*(3/2)sqr...
pi=7.065/2.25
pi=3.14

what do you observe?
the values for pi are all equal... therefore pi is constant.
4 0
4 years ago
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