501 prompts matching "Physics at work: Motion measurement in vehicle safety testing"
Worked example: Turns ratio and output voltage of a transformer
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Spot my mistake: A transformer calculation with the ratio inverted
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Spot my mistake: Choosing a hard magnetic material for a transformer core
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Spot my mistake: Assuming light bends round the fibre rather than reflecting
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Worked example: Photon energy of a laser of stated wavelength
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Spot my mistake: Treating laser light as simply very bright light
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Let me explain: Why a rocket works in the vacuum of space
I have just studied why a rocket works in the vacuum of space in my SS3 Physics class. Let
Worked example: Thrust from a stated exhaust speed and mass flow rate
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Spot my mistake: The claim that a rocket pushes against the air
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Real-life Nigeria: Nigeria's satellite launches and space agency work
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Let me explain: The right-hand grip rule and what it predicts
I have just studied the right-hand grip rule and what it predicts in my SS3 Physics class.
Teach me: Alternating current and how it differs from direct current
You are my personal SS3 Physics tutor. Teach me alternating current and how it differs fro
Let me explain: Why a.c. is described by an r.m.s. rather than an average value
I have just studied why a.c. is described by an r.m.s. rather than an average value in my
Teach me: Inductive reactance and what it depends on
You are my personal SS3 Physics tutor. Teach me inductive reactance and what it depends on
Let me explain: Phase relationships in an inductor and in a capacitor
I have just studied phase relationships in an inductor and in a capacitor in my SS3 Physic
Real-life Nigeria: Tuning a radio receiver as an application of resonance
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Real-life Nigeria: Photocells in automatic doors and light meters
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Teach me: Conductors, insulators and semiconductors compared
You are my personal SS3 Physics tutor. Teach me conductors, insulators and semiconductors
Let me explain: Why a geostationary orbit sits above the equator
I have just studied why a geostationary orbit sits above the equator in my SS3 Physics cla
Real-life Nigeria: NigComSat and satellite services in Nigeria
Act as my SS3 Physics tutor. Show me where NigComSat and satellite services in Nigeria tur