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Anonymous users2024-02-11A buoyancy question in the Beijing 08 high school entrance examination. Physics in the second year of junior high school.
Compilation of junior high school physics formulas. Physics in the second year of junior high school.
From the wine glass to the reservoir. Physics in the second year of junior high school.
Beijing Normal Shanghai Branch] Wonderful measurement of wood block density. Physics in the second year of junior high school.
The new curriculum standard of human education] Electricity and magnetic drawing - can't escape one, two, three. Physics in the second year of junior high school.
Beijing Normal University Shanghai Branch] a class of classic "pressure and pressure" discussion. Physics in the second year of junior high school.
Beijing Normal University, Shanghai Branch] correctly understand the "volume of drained water" in the second year of physics.
Beijing Normal University Shanghai Branch] innovative ideas, decompression and buoyancy problems. Physics in the second year of junior high school.
The new curriculum standard of human education] makes use of the Ampere rule. Physics in the second year of junior high school.
Balance of complex leverage. Physics in the second year of junior high school.
Shanghai Science and Technology Edition, Beijing Normal Edition] Use density to quickly judge the rise and fall of the liquid level. Physics in the second year of junior high school.
Density and its measurement. Physics in the second year of junior high school.
Beijing Normal Edition, Shanghai Science and Technology Edition] inertial knowledge solves practical problems. Physics in the second year of junior high school.
Beijing Normal Edition, Shanghai Science and Technology Edition] The secret of object force analysis. Physics in the second year of junior high school.
Beijing Normal Edition] Lens and Life. Physics in the second year of junior high school.
Beijing Normal Edition] shorthand convex lens imaging rules. Physics in the second year of junior high school.
The new curriculum standard of human education] comparison of the power of electrical appliances. Physics in the second year of junior high school.
There is a secret to judging the brightness change of the bulb. Physics in the second year of junior high school.
The new course standard of human education] volt-ampere method to measure resistance. Physics in the second year of junior high school.
The new curriculum standard of human education] breaks through the difficulty of electric power. Physics in the second year of junior high school.
Beijing Normal Edition, Shanghai Science and Technology Edition] analyzes the problem of two-force synthesis. Physics in the second year of junior high school.
Shanghai Science and Technology Edition, Beijing Normal Edition] Gravity method skillfully solves liquid pressure. Physics in the second year of junior high school.
There are only two ways to crack all circuits. Physics in the second year of junior high school.
The new course standard of human education] easily solves the sliding rheostat. Physics in the second year of junior high school.
The new curriculum standard of human education] Ohm's Law Problem (2) Physics in the second year of junior high school.
The new curriculum standard of human education] Ohm's law problem (1) Physics in the second year of junior high school.
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Anonymous users2024-02-10?pwd=wry2 extraction code: wry2 junior high school physics|23Energy & Sustainable Development |22 Information & Delivery|21 Electricity and Magnetism|20. Electricity for daily use19 electrical work and electric power|18 Ohm's Law|17 Voltage & Resistance |16 Currents and Circuits|15. Utilization of internal energy14 Inner Energy|13 Simple Mechanics 2|12 Simple Machinery|11 Functions and Abilities|10. Buoyancy.
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Anonymous users2024-02-09Density formula, pressure formula, Ohm's law, current, voltage and resistance law of series and parallel circuits, electrical power and heat, force work, lever law, and many other problems are actually quite simple.
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Anonymous users2024-02-08It is very important to memorize the speed formula, the current work formula, and other formulas, and some questions need to be linked to multiple different formulas, so it is very important to memorize the formula, and you must think more and learn to use and analyze the meaning of the question flexibly I am in my second year of high school.
The fixed pulley is essentially an equal-arm lever, which does not save force, but can change the direction of force. The power arm and resistance arm of the lever are respectively the radius of the pulley, and since the radius is equal, the power arm is equal to the resistance arm, and the lever is neither labor-saving nor labor-intensive. It is not labor-saving to pull the object through the fixed pulley. >>>More
Point south. Because the earth is a large magnet, its two magnetic poles are close to the two poles of the earth, and under the action of the geomagnetic force, the magnetic needle is drawn to the north-south direction. We know that the magnetic poles of the different names are attractable, and the s pole of the geomagnetism is at the north end and the n pole is at the south end, so the n pole of the magnetic needle is always pointing to the north and the S pole is always pointing to the south. >>>More
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The phenomenon of inducing electromotive force due to changes in magnetic flux (when a part of a conductor in a closed circuit moves to cut magnetic field lines in a magnetic field, an electric current is generated in the conductor, and this phenomenon is called electromagnetic induction.) ） >>>More
All the knowledge points of the junior high school circle: >>>More