216 prompts matching "Thrust from a stated exhaust speed and mass flow rate"
Exam prep: Electrical energy, power and the cost of consumption
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Let me explain: Lenz's law and the direction of an induced current
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Exam prep: The a.c. generator and how it works
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Spot my mistake: The d.c. generator and the commutator
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Let me explain: The field pattern around a straight wire and around a coil
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Worked example: The strength of an electromagnet and what affects it
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Exam prep: The relay and the telephone earpiece
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Physics at work: The loudspeaker, and how it turns current into sound
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Teach me: Electric charge, current and electromotive force reviewed
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Let me explain: Series and parallel circuits reviewed
I have just studied series and parallel circuits reviewed in my SS2 Physics class. Let me
Worked example: Electrical safety and the cost of energy reviewed
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Exam prep: The simple d.c. motor and how it turns
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Spot my mistake: Confusing Fleming's left-hand rule with the right-hand rule
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Real-life Nigeria: Electric motors in Nigerian homes and industry
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Teach me: What a transformer does, and why it is needed
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Let me explain: Step-up and step-down transformers
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Worked example: Calculating output voltage from the turns ratio
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Exam prep: Energy losses in a transformer, and how they are reduced
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Teach me: The structure of the atom and the particles in it
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Teach me: What radioactivity is, and why some nuclei are unstable
You are my personal SS2 Physics tutor. Teach me what radioactivity is, and why some nuclei