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Anonymous users2024-02-12If it is the Suke version of the eight times, there are the magnitude of kinetic energy, the magnitude of gravitational potential energy, the magnitude factors affecting sliding friction, the magnitude of pressure, etc.
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Anonymous users2024-02-11The factors that affect evaporation, the factors that determine the size of the resistance, the relationship between the current on the resistance and the voltage at both ends, the relationship between the heat generated by the current and the current resistance and the energizing time, what factors are related to the strength of the magnetism of the electromagnet, and the effect of the magnetic field on the energized wire.
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Anonymous users2024-02-10The magnitude factors that affect the sliding friction, the magnitude of the solid pressure, the influencing factors of the liquid pressure, the magnitude of kinetic energy, and the magnitude of gravitational potential energy.
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Anonymous users2024-02-09What factors are related to the size of the resistance, which are the change of material, length, and area. Each time the other quantities are controlled, only one quantity is changed.
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Anonymous users2024-02-08Factors that affect friction.
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Anonymous users2024-02-07Typically, what factors are related to the magnitude of the resistance? the relationship between the magnitude of the current and the voltage and resistance; What factors are involved in the heat generated by the passage of an electric current through a conductor? **What factors are related to the strength of the electromagnetism?
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Anonymous users2024-02-06Causes of resistance The magnitude of the magnetic force of the energized solenoid It seems that when there is a certain resistance, the current is directly proportional to the voltage When the voltage is constant, the current is inversely proportional to the resistance.
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Anonymous users2024-02-05Voltammetry measures the resistance and the power of small bulbs.
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Anonymous users2024-02-041. What is the control variable method?
The control variable method is a method that refers to the method of artificially controlling other factors other than this factor in order to study the relationship between the physical quantity and one of the multiple factors that affect it, so that it remains unchanged, and then compare and study the relationship between the physical quantity and the factor, draw conclusions, and then synthesize to obtain the law.
2. What experiments are there in junior high school physics?
1. Study what factors are related to the effect of pressure (the magnitude of pressure and the size of the force area).
2. Study what factors are related to the low pressure of the liquid (density and depth of the liquid).
3. Study what factors are related to the magnitude of buoyancy (density of the liquid and the volume of the liquid discharged).
4. Study what factors are related to the mechanical efficiency of the pulley block (the gravity of the object, the gravity of the moving pulley, and the friction).
5. Study what factors are related to the magnitude of kinetic energy (mass and velocity of the object).
6. Study the factors related to the speed of liquid evaporation (liquid temperature, liquid surface area and air flow).
7. Factors affecting the resistance of the conductor (length, material and cross-sectional area of the conductor).
8. The relationship between current and voltage resistance (voltage at both ends of the conductor and conductor resistance).
9. Factors affecting the magnitude of electrical work (voltage, current and energizing time).
10. Factors that affect the size of electric heat (current, resistance and energizing time).
11. Factors affecting the magnetic strength of the electromagnet (the size of the current, the number of turns of the coil, the presence or absence of iron core).
12. Factors affecting the magnitude of sliding friction (the size of the boot force and the roughness of the contact surface).
13. Factors that determine the effect of pressure (the magnitude of pressure and the magnitude of the force area).
14. In the introduction of the concept, the control variable method is used: the concept of velocity (v=s t), the concept of density (=m v), the concept of pressure (p=f s), the concept of power (p=w t), and the concept of specific heat capacity (c q m t).
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Anonymous users2024-02-031.The relationship between the speed of evaporation and the temperature of the liquid was studied.
2.The surface area of a liquid is related to how quickly the air flows above the liquid.
3.Measure the resistance of small bulbs.
4.Study what factors are involved in sliding friction.
5.The pressure inside the liquid is studied.
6.The relationship between the tone of the string sound and the thickness, tightness, and length of the string is studied.
7.Study the factors that affect how quickly a liquid evaporates.
8.The relationship between heat absorption and the type, mass, and temperature of a substance is studied.
9.Study the factors that affect the size of the resistor.
10.The relationship between current and voltage and resistance is studied.
11.Study what factors are associated with electrical work or electric heat.
12.To study what factors are related to the force experienced by an energized conductor in a magnetic field.
13.Investigate the directional factors that affect the induced current.
14. Study what factors kinetic energy is related to.
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Anonymous users2024-02-021.Study the speed of evaporation and the temperature of the liquid.
2.The surface area of the liquid is related to the speed of the air flow above the liquid.
3.Measure the resistance of the small bulb.
4.Study what factors are involved in sliding friction.
5.The pressure inside the liquid is studied.
6.The relationship between the tone of the string sound and the thickness, tightness, and length of the string is studied.
7.Study the factors that affect how quickly a liquid evaporates.
8.The relationship between heat absorption and the type, mass, and temperature of a substance is studied.
9.Study the factors that affect the size of the resistor.
10.The relationship between current and voltage and resistance is studied.
11.Study what factors are associated with electrical work or electric heat.
12.To study what factors are related to the force experienced by an energized conductor in a magnetic field.
13.Investigate the directional factors that affect the induced current.
14 Study what factors kinetic energy (or gravitational potential energy) is related to.
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Anonymous users2024-02-01The control variable method is used for any problem with two or more influencing factors. A variable is one of the factors that affect the question to be asked, and all other factors remain the same. For example, the speed problem, to discuss the relationship between speed and time, the most important problem is speed, time is a variable, and the distance should be the same.
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Anonymous users2024-01-31Factors that affect the magnitude of the resistance.
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Anonymous users2024-01-30The first floor and the second floor are basically complete.
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To study science, you must have a mind, you can ask, it means that you are still very good, then first of all, you must have information, you can't give yourself psychological hints that you can't do, you have to think with your heart, and force yourself more. Do more questions, improve your thinking ability, master the basic formulas in mathematics, physics is only learned in the second year of junior high school, I am now in high school, I think that junior high school physics is still relatively simple, to master some principles, formulas, science ideas from the beginning of the beginning is very important, of course, the ideas are reflected in the amount of questions (but remember not the sea of tactics). Hope it helps, come on! >>>More
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If you can't memorize it, then understand the memory, first of all, you have to understand what you remember, such as what a letter represents, and then you have to remember the formula, under the condition of knowing the meaning of the letter, go down to ask the teacher how to get the formula, but the teacher may use the previous formula to deduce the answer, so you have to start over, it may be more embarrassing, you can also read the book by yourself, but it is a little difficult, anyway, after understanding how the formula came about, the postscript is not a boring letter, It's a process of pushing, and after remembering the formula, you have to do the topic to deepen your memory, and if you do more, you will naturally remember it. >>>More