-
Anonymous users2024-02-06You look at the encyclopedia and the library, which has it.
-
Anonymous users2024-02-05Finishing of all formulas in physics at the junior high school level:
Thermal formula c water
1. Endothermy: Q absorbs cm(t t0) cmδt.
2. Exothermic: Q exothermic cm(t0 t) cmδt.
3. Calorific value: q q m.
4. The efficiency of the furnace and heat engine: Q effective use of Q fuel.
5. Thermal equilibrium equation: q release and q absorption.
6. Thermodynamic temperature: t t 273k.
7. Fuel combustion exothermic formula Q absorption mq or Q absorption VQ (suitable for natural gas, etc.).
2 Ohm's Law Formula:
1.=u r (Ohm's law: the current in a conductor is proportional to the voltage at both ends of the conductor and inversely proportional to the resistance of the conductor).
The characteristics of the current in the series circuit: the current is equal everywhere).
Characteristics of the voltage in the series circuit: In the series circuit, the total voltage is equal to the sum of the voltages at both ends of the circuit of each part).
Characteristics of the current in the parallel circuit: the current on the main circuit is equal to the sum of the currents of each branch).
The characteristics of the voltage in the parallel circuit: the voltage at both ends of each branch is equal. are equal to the supply voltage).
Characteristics of resistance in series circuits: the total resistance is equal to the sum of the resistances of the circuit parts).
Characteristics of the resistors in parallel circuits: the reciprocal of the total resistance is equal to the sum of the reciprocals of each parallel resistor).
and = r n (the formula for finding the total resistance when n of the same resistor in parallel).
string = nr (the formula for finding the total resistance when n of the same resistor are connected in series).
u2=r1:r2 (the relationship between voltage and resistance in a series circuit: the ratio of voltage is equal to the ratio of resistance to which they correspond).
i2=r2:r1 (the relationship between current and resistance in parallel circuits: the ratio of current is equal to the inverse ratio of the resistance to which they correspond).
-
Anonymous users2024-02-041. Speed: v=s t
2. Gravity: g=mg
3. Density: =m v
4. Pressure: (mainly used for solid pressure; Formula: hard to hard) :p=f s (1pa=1n m2) (the area is smaller).
-
Anonymous users2024-02-03The full formula of junior high school physics can be referred to below.
1. Thermal formula:
C water 1, endothermy: Q absorbs cm(t t0) cmδt.
2. Exothermic: Q exothermic cm(t0 t) cmδt.
3. Calorific value: q q m.
4. The efficiency of the furnace and heat engine: Q effective use of Q fuel.
5. Thermal equilibrium equation: q release and q absorption.
6. Thermodynamic temperature: t t 273k.
7. Fuel combustion exothermic formula Q absorption mq or Q absorption VQ (suitable for natural gas, etc.).
2. Ohm's Law Formula:
1. i=u r (Ohm's law: the current in the conductor is proportional to the voltage at both ends of the conductor and inversely proportional to the resistance of the conductor).
2、i=i1=i2=…=in (the characteristic of the current in the series circuit: the current is equal everywhere).
3、u=u1+u2+…+UN (characteristics of voltage in series circuits: in series circuits, the total voltage is equal to the sum of the voltages at both ends of each part of the circuit).
4、i=i1+i2+…+in (characteristic of the current in parallel circuits: the current on the dry circuit is equal to the sum of the currents of each branch).
5、u=u1=u2=…=un(Characteristics of voltage in parallel circuits: The voltage at both ends of each branch is equal. The beam is equal to the supply voltage).
6、r=r1+r2+…+rn (characteristic of resistance in series circuits: the total resistance is equal to the sum of the resistances of the circuit parts).
r=1/r1+1/r2+…+1 rn (characteristic of resistors in parallel circuits: the reciprocal of the total resistors is equal to the sum of the reciprocals of the various parallel resistors).
8. r and = r n (the formula for finding the total resistance when n of the same resistance in parallel).
9. r string = nr (the formula for finding the total resistance when n of the same resistance are connected in series).
10. U1:U2=R1:R2 (the relationship between voltage and resistance in series circuits: the ratio of voltage is equal to the ratio of resistance corresponding to them).
11. i1:i2=r2:r1 (the relationship between current and resistance in parallel circuits: the ratio of current is equal to the inverse ratio of their corresponding resistance).
3. Summary of physical quantity formulas:
1. Speed of light: c 3 108m s (in vacuum).
2. Sound speed: V 340m s (15).
3. The human ear distinguishes echoes: .
4. Gravitational acceleration: g.
5. Standard atmospheric pressure value: 760 mm mercury column height.
6. Density of water:
7. Freezing point of water: 0.
8. The boiling point of water: 100.
9. Specific heat capacity of water: c Lack of slag.
10. Elemental charge: e.
11. Voltage of a dry battery:
12. Voltage of a lead-acid battery: 2V. Fuci.
13. Safe voltage for human body: 36V (not higher than 36V).
14. The voltage of the power circuit: 380V.
15. Home circuit voltage: 220V.
16. Unit conversion: (1) 1m s.
Feelings can't be forced, in fact, I think you should analyze the main problem of your breakup at that time, why wait, mainly depends on you, do you think your relationship is worth keeping, do you want to keep, or whether it is necessary to keep. If you feel that you still care about the relationship between you, you can try to change it, make up for the mistakes of the past together, let go of the stones in your heart, and feel the good times you used to have again. If you feel that he doesn't care about the relationship anymore and doesn't matter in your heart anymore, then don't force it too much.
Title: Songs from a Secret Garden.
The first album released by the world-famous band Secret Garden, Songs from a Secret Garden >>>More
It is an obscure type, but it is already the absolute main force of Valencia and the national team, and when he was young, he was rejected by Real Madrid on the grounds of being thin.
A friend is that even if you are not in the same place, you don't need to think about it all the time, you don't need to keep in touch with each other, occasionally you have troubles to call him, he will listen to you, he won't think you're annoying, and he won't talk to you in an impatient tone, when you have difficulties, he will help you without saying a word, he will help you get ahead, and he will feel very warm when he is with him.
In the process of using QQ, sometimes we see a like-minded brother who wants to add him, but he doesn't let you add him as a friend, because there is no face for identity verification!! What to do, thinking about We know that the value in the game can be modified with a game modifier, which can make you have an attack power of 99999 money, so can we modify the QQ number in QQ, (because QQ number is also a numerical value) to modify a less frequently contacted QQ number to the brother QQ number we want to add but can't add it? The answer is yes, because QQ also runs in memory (nonsense) Similarly, values such as QQ numbers are also in memory, we can modify the data through Kingsoft Ranger, and change the unwanted numbers in memory to the brother numbers we want Okay, the experimental principle is here, now let's operate! >>>More