How to cut, in order to make the length of 10 cm, width of 8 cm, height of 6 cm, cut into two cuboid surface area than the sum of cuboid surface area

How to cut, in order to make the length of 10 cm, width of 8 cm, height of 6 cm, cut into two cuboid surface area than the sum of cuboid surface area

How to cut, in order to make the length of 10 cm, width of 8 cm, height of 6 cm, cut into two cuboid surface area than the cuboid surface area of the original cuboid surface area: (10 × 8 + 8 × 6 + 6 × 10) × 2 = 376 square centimeter cross cut, cut into two cuboid surface area increase: 6 × 8 × 2 = 96 square centimeter flat cut, cut into two

Simple calculation of 69 * 84-84 * 19

69*84-84*19
=(69-19)x84
=50x84
=4200

The general formula of negative half, one third and one fourth
How to write it? Thank you. How does the N plus one power of annex one come from?

-1/2 = (-1)^1 * [1/(1+1)]
1/3 = (-1)^2 * [1/(1+2)]
-1/4 = (-1)^3 * [ 1/(1+3)]
………………
So the nth term is: (- 1) ^ n * [1 / (1 + n)]

Why do atomic orbital maps have positive and negative signs while electron cloud angular maps are all positive? What do positive and negative signs represent?

The atomic orbital diagram describes the value of the wave function ψ obtained by solving the Schrodinger equation. The function value can be positive or negative. The formation of covalent bonds requires the same sign overlap, that is, the symmetry matching principle
The angular distribution of electron cloud is the square of wave function, so it can only be positive

What is the pH value of industrial glacial acetic acid with 99.85% content? Can it be directly measured by pH test paper?

Glacial acetic acid is a covalent compound, which has no pH value. Its aqueous solution has pH value only after acetic acid is dissolved in water
The pH test paper can only test the pH of the solution

Pulley formula
Please tell me the formula of pulley
F=0.5G
S=nh
How is it deduced?
It's mainly about
S = NH this
I'm said to be an idiot. So it's better to be clear.

Because the moving pulley has two ropes and the fixed pulley has only one rope, the moving pulley can save half of the force, but the fixed pulley can't. Formula 1: F = 0.5g (it must be the moving pulley). For example, the weight of the object is 100N, and the pulling force F is 50 when using the moving pulley. Formula 2: S = NH is also for the moving pulley, if you want to improve the object

On the calculation of LN e
ln√e
e^ln5,
lne^2
2lne
e^5 ln2

ln√e =ln(e^1/2)=1/2
e^ln5=5
ln(e^2) =2
(lne)^2 =1
2lne=2
e^5 ln2=(e^ln2)^5=2^5=32

The locations in the Western Hemisphere, low latitude and temperate zone are 15 degrees east longitude, 25 degrees north latitude, 15 degrees west longitude and 20 degrees south latitude
C. 165 degrees west, 25 degrees south D. 165 degrees west, 20 degrees north. I hope you can answer as soon as possible,

C. 165 W, 25 s
The Western Hemisphere ranges from 20 degrees west longitude to 160 degrees east longitude
The low latitudes range from 0 to 30 degrees north and south
The temperate zone ranges from 23 degrees 26 minutes north and south latitude to 66 degrees 34 minutes

1 is the factor of all natural numbers except 0______ (judge right or wrong)

From the analysis, it can be seen that 1 is the factor of the natural number (except 0)

There are several real number solutions to the equation 3 ^ x = SiNx, X ∈ [- 2 Π, 2 Π]

x> When 0, 3 ^ x > 1
Because SiNx ∈ [- 1,1]
Therefore, we only need to consider x ∈ [- 2 π, 0]
The image of y = SiNx is exactly a period
Let's make an image of y = SiNx, y = 3 ^ X,
It is found that the two images consist of two intersections
So the equation 3 ^ x = SiNx, X ∈ [- 2 Π, 2 Π] has two real solutions