250 prompts matching "Using Hooke's law on a spring that has already been overstretched"
Exam prep: The simple d.c. motor and how it turns
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Quiz: The structure of a transformer and its two coils
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Let me explain: Step-up and step-down transformers
I have just studied step-up and step-down transformers in my SS2 Physics class. Let me exp
Worked example: Calculating output voltage from the turns ratio
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Practice set: The efficiency of a transformer
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Exam prep: Energy losses in a transformer, and how they are reduced
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Quiz: The Rutherford scattering experiment and what it showed
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Let me explain: Atomic number, mass number and isotopes
I have just studied atomic number, mass number and isotopes in my SS2 Physics class. Let m
Exam prep: The cloud chamber and the photographic plate as detectors
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Quiz: The decay curve, and reading a half-life from it
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Let me explain: The random nature of radioactive decay
I have just studied the random nature of radioactive decay in my SS2 Physics class. Let me
Worked example: Calculating the mass remaining after a number of half-lives
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Spot my mistake: Assuming a sample decays completely after two half-lives
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Quiz: The earth's atmosphere and the layers within it
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Let me explain: The earth's magnetic field and what causes it
I have just studied the earth's magnetic field and what causes it in my SS2 Physics class.
Quiz: The planets and the order in which they orbit
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Worked example: Calculating the orbital period of a planet
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Exam prep: The origin of the solar system and the theories about it
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Let me explain: The life cycle of a star
I have just studied the life cycle of a star in my SS2 Physics class. Let me explain it ba
Worked example: The luminosity and the brightness of a star
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