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Please help me summarize all the Physics Formulas of senior two!
Physical theorem, law and formula table 1. Motion of particle (1) ---- linear motion 1) uniformly variable speed linear motion 1. Average velocity VT = s / T (definition) 2. Useful inference vt2-vo2 = 2As 3. Velocity VT / 2 = VT + VO / 2 4. Final velocity VT = VO + at 5. Velocity vs / 2 in middle position =
According to the definition of electric field strength and Coulomb's law, the formula of electric field strength e = KQ / R square can be obtained
I want a detailed derivation of this formula, I'm not good at it
F=kq1q2/r^2
Q 1 at both ends, that is
F/q1=kq2/r^2
Because e = f / Q
therefore
E=kq2/r^2
That is, the formula of electric field strength of vacuum midpoint charge: e = k * q / R ^ 2
X=aT^2
In uniform acceleration linear motion
The difference of displacement between two adjacent segments in the same time x = at ^ 2
7 and 1 / 2 to 1.8 = x to 1 x + 6.25 of 30 = 1 / 8
7 and 1 / 2 to 1.8 = x to 1
1.8x = 7 and 1 / 2 × 1
X = 7 and 1 / 2 △ 1.8
X = 4 and 1 / 6
X + 6.25 of 30 = 1 of 8
x+30=6.25×8
x=50-30
x=20
Factorization 25 (M + n-2) ^ 2-16 (m-n-2) ^ 2
25(m+n-2)^2-16(m-n-2)^2=[5（m+n-2)+4(m-n-2)][5（m+n-2)－4(m-n-2)]＝(9m+n-18)(m+9n-2)
Given that the graph of a function y = 2x + M-1 passes through the first three or four quadrants, the value range of M is
（A）m≤1（B）m≤-1（C）m＜1（D）m＞1
k>0；
As long as f (0)
A simple method is used to calculate (1) 50 × 98 / 99 (2) 1 / 4 × 6 + 1 / 6 × 8 + 1 / 8 × 10 + 1 / 10 × 12 + 1 / 12 × 14 + 1 / 1 / 28
50x (1-1 / 99) 1 / 4x6 = (1 / 4-1 / 6) / 2 according to this method, the split terms are eliminated. Put 1 / 2 out, and the other phases are eliminated
If the equation 6x = 16 ax of X has the same solution as 5 (x + 2) = 2 (x + 7), then the value of a is?
5（x+2）=2（x+7）
5x+10=2x+14
5x-2x=14-10
3x=4
x=4/3
The solution is the same, so 6 * 4 / 3 = 16-a * 4 / 3
8=16-4/3a
4/3a=8
a=6
The length of the major axis is a = B, the eccentricity is e = 1 / 3, and the standard equation of the ellipse with the focus on the X axis is
Long half axis length
According to the definition of eccentricity, e = C / a = 1 / 3, so C = A / 3 = 2, B & sup2; = A & sup2; - C & sup2; = 6 & sup2; - 2 & sup2; = 32
A general formula of sequence 1,0,1,0,1,0. Can be
A general formula of sequence 1,0,1,0,1,0 can be: [1 - (- 1) ^ n] / 2
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