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Anonymous users2024-02-06Length m m
Weight kg kg
Time seconds
The strength of the current. Amps a
Thermodynamic temperature Kelvin k
The amount of a substance in moles mol
Luminous intensity Candela CD
Area sqm m2
Volume cubic meters m3
Molar volume is cubic meters per mole m3 mol
Frequency: Hz (1 s).
Density kg per cubic meter kg m3
Molar mass kilograms per mole kg mol
Velocity m s per second
Angular velocity rad s per second
Force Newton n
Pressure Pascal Pa(n m2).
Surface tension in Newtons per meter n m
Impulse, momentum Newton-seconds n·s
Work, energy, heat, enthalpy joules j(n·m).
Molar energy, molar enthalpy joules per mole j mol
Power w(j s).
Heat capacity, entropy joules per Kelvin j k
Molar heat capacity, molar entropy joules per mole of Kelvin j (mol·k) and specific heat joules per kilogram of Kelvin j (kg·k).
Electricity Coulombs c(a·s).
Voltage, electromotive force volts v(w a).
Resistance Ohm (V a).
Magnetic flux Weber (wb).
Magnetic induction intensity Tesla t(n2).
Some symbols can't be played, so maybe the amount is definitely not complete, you find a book of mathematical, physical and chemical formulas to memorize, the last few pages of physics knowledge are generally available, I'm talking about the kind of palm-sized book.
Say
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Anonymous users2024-02-05If you don't know the text, it shouldn't be very difficult to understand.
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Anonymous users2024-02-04That's too much, I said why don't you go and look it up?
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Anonymous users2024-02-03Summary of high school physics formulas.
Physical theorems, laws, tables of formulas.
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Anonymous users2024-02-02I will also take the college entrance examination next year. The physical alphabet depends on the question. There is no need to summarize. If you really need it, you need to look at the information. There is generally a summary.
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Anonymous users2024-02-01The displacement formula is s=1 2a (t squared). The meaning of this equation is the displacement s. with an initial velocity of zero and an acceleration of aIf you want anything else, add me 897329131
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Anonymous users2024-01-31u: Voltage.
i: Current. r: resistance.
p: electrical power.
w: Electrical energy. Q: Thermal energy.
Density. m: Quality.
v: volume. g: Gravity.
f: Pressure. P: Pressure.
A: Acceleration.
b；Magnetic field strength.
c；with charge.
d；distance, etc.
e；Electric field strength.
Mechanical energy. e；Amount of charge, unit charge, etc.
f；Force f; Frictional force.
g: gravity, gravitational constant.
g: acceleration due to gravity.
h: Height, etc.
i: Current intensity.
j: unit of energy, joules.
k thermodynamic temperature scale, Kelvin.
k: stiffness coefficient.
l: length, etc.
m: Quality. n: unit of mechanics, newton.
n: constant. o: p: power.
Pressure q: The amount of charge.
r r: resistance, distance, radius.
S: Distance. t: period, time, temperature.
t: Time. u: potential difference (voltage).
v: velocity, velocity.
W: Power w: Power unit, watts.
x: displacement, etc.
y：z：
The support force is the reaction force of the pressure of the force object to the force object, its work is only related to the displacement of the force object in the direction of the force, the work done by the support force is only the work done to overcome the pressure, and the mechanical energy is the sum of the gravitational potential energy and the kinetic energy, and the two kinds of work are not necessarily related, for example, on the conveyor belt, the support force does not do the work, but the friction force does the work, so that the gravitational potential energy of the object increases, so that the mechanical energy increases (the object is in a stationary state before and after the work, that is, the kinetic energy change is zero), and on the vertical elevator, The work done by the supporting force is equal to the amount of change in the potential energy of gravity, i.e., the amount of change in mechanical energy (the object is also at rest before and after the work is done), therefore, there is no necessary connection between the two.
To make ab slide relatively, there is sliding friction between ab, and the magnitude of the sliding friction between ab is gravity multiplied by a = 1nThe sliding friction between b and the ground is at least 1n+1n+6n=8n, and the second question f is at least 4n+4n+3n=11n, sorry, I don't know how to type mathematical expressions. 1n+1n+6n=8n means the friction between ab, the tension of the rope and the friction between b and the ground.
Physics, it is not difficult to learn well, this is a few experiences I have when I am studying, I hope it will help you: >>>More
The resistance experienced by the bullet when it enters A is A, the interaction force with the bullet. And the time is extremely short, so the bullet, a momentum is conserved. >>>More
1. Learn mathematics well, mathematics is the language of physics. >>>More