250 prompts matching "Describing convection as happening in a solid"
Exam prep: The camera, and how it compares with the eye
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Spot my mistake: The projector and how it throws an enlarged image
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Quiz: Radio waves and microwaves and their uses
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Worked example: X-rays and gamma rays, their uses and their dangers
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Practice set: The properties common to all electromagnetic waves
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Physics at work: Mobile telephony, satellites and fibre optics
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Exam prep: The frequency, wavelength and amplitude of a sound wave
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Spot my mistake: Reflection of sound and the formation of echoes
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Real-life Nigeria: Resonance and the vibration of air columns
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Practice set: Overtones, harmonics and the quality of a note
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Quiz: Brownian motion and what it demonstrates
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Practice set: Cohesion, adhesion and the forces between molecules
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Exam prep: Surface tension and the effects it produces
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Exam prep: Gravitational potential energy and escape velocity
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Spot my mistake: The variation of g over the earth's surface
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Real-life Nigeria: Satellites and the orbits they keep
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Quiz: Magnetic and non-magnetic materials
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Exam prep: The field around a solenoid and the right-hand grip rule
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Spot my mistake: Magnetic flux and magnetic flux density
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Real-life Nigeria: The electromagnet and the uses it is put to
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