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Anonymous users2024-02-06Force 1, pressure: p=f s
p represents pressure, the unit pascal (abbreviated pa, symbol pa) f represents pressure, and the unit is newton (n).
s indicates the stressed area, in square meters.
2. Liquid pressure and buoyancy: f = meat gh
3. Density = m v
Density, m quality
v denotes volume.
4. Gravity g=mg
5. Speed. v=s/t
6. Work w=fs
w denotes work, f denotes work).
7. Power p=w t fv
8. Mechanical efficiency w useful w total gh fs=g fn (n is the number of strands of the pulley group).
9. Thermal energy q cm t
10. Calorific value q=mq
11. Sliding friction f= n
f is the sliding friction.
n is positive pressure.
is a friction factor and unitless).
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Anonymous users2024-02-05The ultimate physics formula, e=mc
Energy = speed of light *m
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Anonymous users2024-02-04p pressure f force g gravity m mass g gravity constant f friction w work j joules i sophomore.
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Anonymous users2024-02-03Force. 1. Pressure: p=f s
p represents pressure, the unit pascal (abbreviated as pa, symbol pa) f represents pressure, unit newton (n) s represents the area of force, unit square meter.
2. Liquid pressure and buoyancy: f = meat gh
3. Density = m v
Density, m for mass, and v for volume.
4. Gravity g=mg
5. Velocity v=s t
6. Work w=fs (w represents work, f represents work).
7. Power p=w t fv
8. Mechanical efficiency w useful w total gh fs=g fn (n is the number of strands of the pulley group).
9. Thermal energy q cm t
10. Calorific value q=mq
11. Sliding friction f= n (f is sliding friction, n is positive pressure, and friction factor is unitless).
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Anonymous users2024-02-022012 Beijing Normal University Edition of the Physical Examination Form.
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Anonymous users2024-02-01Force 1, pressure: p=f s
p represents pressure, the unit pascal (abbreviated as pa, symbol pa) f represents pressure, unit newton (n) s represents the area of force, unit square meter.
2. Liquid pressure and buoyancy: f = meat gh
3. Density = m v
Density, m for mass, and v for volume.
4. Gravity g=mg
5. Velocity v=s t
6. Work w=fs (w represents work, f represents work).
7. Power p=w t fv
8. Mechanical efficiency w useful w total gh fs=g fn (n is the number of strands of the pulley group).
9. Thermal energy q cm t
10. Calorific value q=mq
11. Sliding friction f= n (f is sliding friction, n is positive pressure, and friction factor is unitless).
Electricity 1, Ohm's law: i = u r
2. Electric work: w uit pt i rt u rt (the last 2 formulas are applicable to pure resistive circuits).
3. Electric power: p=ui w t i r u r
Commonly used data: the speed of light in a vacuum is 3 10 8 m sec.
g Newton kg.
The speed of sound in air at 15°C is 340 m s.
The safety voltage is not higher than 36 volts.
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Anonymous users2024-01-31Junior high school physics to calculate the formula alphabet.
Source means electricity. 1. Ohm's law.
bai：i=u/r
2. Electric power du: w
Zhiuit pt i rt u rt (the last 2 formulas apply to DAO pure resistive circuits).
3. Electric power: p=ui w t i r u r common data:
The speed of light in a vacuum is 3 10 8 meters and seconds.
g Newton kg.
The speed of sound in air at 15°C is 340 m s.
The safety voltage is not higher than 36 volts.
3. History is the proof of the prosperity and decline of a nation, just like a mirror, no matter what the people in front of him did right or wrong, he can give a fair evaluation. Moreover, history also embodies the wisdom of the ancient people of our country. Therefore, in order to understand China, it is necessary to understand China's historical development, because China's history has been passed down and influenced the thinking of several generations.
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