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Anonymous users2024-02-06For each physical quantity, there is a corresponding letter. According to the order of the textbooks taught by junior high school people, the letters and meanings that appear in order are as follows:
m, m. s, seconds.
min, minutes.
h, hour. m s, meters per second.
f, which indicates the frequency.
Hz, hertz, unit of frequency; Celsius.
t, which indicates time or temperature.
f, the focal length of the lens, the unit bibi width is m
f, the focal point of the lens, density, in kg m3 or g cm3m, mass, in kg, t (ton) or g
n, the unit of force in Newton, can also denote a supporting force or pressure.
f, hand pick up to indicate force.
p, power. p, pressure.
g, gravity. g, which means efficiency.
w, the unit of work or power in watts.
q, heat. j, joules, the unit of energy, heat in this talk.
kw, kilowatts.
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Anonymous users2024-02-05u: 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: energy unit, joule k thermodynamic temperature scale, kelvin k:
Stiffness coefficient l: length etc m: mass n:
Unit of mechanics, Newton n: constant o: p:
Power, pressure q: amount of charge.
r r: resistance, distance, radius s: distance t: period, time, temperature t: time u: potential difference (voltage).
V: Velocity, Rate W: Work W: Power Unit, Watt X: Displacement, etc. Y: Z:
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Anonymous users2024-02-04Didn't go to college? No need to write **. Different physical quantities, the rate of change is represented by different letters! For example, the rate of change of displacement versus time dx dt, and the rate of change of velocity versus time dv dt .......
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Anonymous users2024-02-03Length. l
Time. s speed. v
Force. f Acceleration. a
Voltage. u current. i
Power. p-density. p
Quality. m volume. v
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Anonymous users2024-02-02What does the Tesla electric car logo t stand for, and what unit of physical quantity is the letter t? Musk, Tesla, magnetic induction intensity, magnetic flux density, magnetic flux.
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Anonymous users2024-02-01i: The physical quantity symbol of the current.
u: The physical quantity symbol of the voltage.
r: The physical quantity symbol of the resistor.
w: electrical energy (also called.
Electrical work. ) of the physical quantity symbol. (Depending on the situation, sometimes too.)
Electrical power. of the unit, watts, abbreviated as watts).
V: The unit of voltage, volts, referred to as volts.
A: The unit of electric current, ampere, referred to as ampere.
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Anonymous users2024-01-31The common ones are as follows:
a: amplitude; Amps (units of current).
b: Magnetic field strength.
c: capacitance; Coulomb (unit of charge).
e: Electric field strength or electromotive force.
f: force; Farad (unit of electric capacity).
g: gravitational constant; Gaussian (unit of magnetic induction intensity).
i: Current. j: joule (unit of energy).
k: Kelvin temperature scale.
l: length; Inductance.
m: generally represents the mass of a relatively large object (e.g. the mass of the earth) n: newton (a unit of force).
p, power. q, heat. Reactive power.
r: resistance. s: apparent power.
t: temperature, Tesla (unit of magnetic flux density).
u: Voltage. V: Volts (voltage unit).
w: electrical work; watts (energy unit).
x: reactance. z: Impedance.
A: Acceleration.
c: speed of light; Specific heat capacity.
d: Distance. e: natural constant; The amount of charge of an electron.
g: acceleration due to gravity. grams (units of mass).
h: height; Hours (units of time).
i: imaginary unit; AC current.
j: Imaginary number unit (in circuit only).
k: SI prefix.
l: length; m: Quality. meters (unit of length).
n: any number.
r: radius. s: distance; seconds (units of time).
t: Time. u: AC voltage.
v: Velocity.
Let me tell you if there is a way to determine the relative movement trend. >>>More
g is a high-speed train read "high" sound c is a quasi-high-speed intercity train read "city" sound d is a quasi-high-speed EMU train read "EMU" or "moving" sound dj is the quasi-high-speed EMU detection car, this car is a train that tests the performance of EMUs, and will not be used as a commonly used EMU train, read "dynamic inspection" sound z is a direct express train Read "straight" sound t is an express train Read "special" sound k is a fast train Read "fast" sound (At present, passenger trains starting with "N" are divided into trains starting with "K", and A is a temporary train in the tube.) Pronunciation unknown: l for temporary trains; pronounced "pro" for tourist trains; pronounced "travel" pronounced 1001-1998 for ordinary express trains that span three or more bureaus directly read 4 digits: 2001-3998 for ordinary fast trains across two bureaus directly read 4 digits 4001-5998 for ordinary fast trains in the tube direct pronounced 4001-8998 for ordinary passenger slow trains or commuter trains, direct read 4 digits, as of February 2010.
Ruler = energy.
2. Waterfall = DC. >>>More
The generation of rolling friction is caused by the deformation at the contact point between the object and the plane. The object is pressed into the bearing surface by gravity, and at the same time it is also deformed by compression, so when rolling forward, the bearing surface in front of it is uplifted, which makes the point of action of the elastic force n of the support facing the object move forward from the lowest point, so the elastic force n and gravity g are not in a straight line, but form a force couple moment that hinders rolling, which is rolling friction. The magnitude of rolling friction is measured by the coupling moment, and is proportional to the positive pressure, and the proportional coefficient is called the rolling friction coefficient δ, which is numerically equivalent to the elastic force to the force arm of the center of mass of the rolling object, so it has a dimension of length; It is related to the material, hardness and other factors of the rolling object and the bearing surface, and has nothing to do with the radius. >>>More
Solution: According to the total reflection condition of light, light enters the photophobic medium from the optically dense medium, and the incident angle is greater than or equal to the critical angle; It can be determined by the refraction of light; There will be a bright spot in the center of the shadow on the light screen, which is a diffraction phenomenon of light; This is due to the fact that the refractive index cluster of the upper air of the desert is not larger than that of the lower air >>>More