250 prompts matching "Let me explain: Why no machine reaches one hundred per cent efficiency"
Exam prep: Calculating frequency and wavelength from the wave speed
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Real-life Nigeria: Radio and television broadcasting in Nigeria
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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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Real-life Nigeria: Resonance and the vibration of air columns
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Physics at work: The range of human hearing, and ultrasound beyond it
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Quiz: Vibration in strings and the factors affecting the frequency
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Physics at work: Sound in Nigerian music, broadcasting and building design
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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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Real-life Nigeria: Molecular forces at work in Nigerian daily life
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Quiz: The law of universal gravitation as Newton stated it
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Exam prep: Gravitational potential energy and escape velocity
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Real-life Nigeria: Satellites and the orbits they keep
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Physics at work: Gravity in engineering and in space science
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Practice set: The domain theory of magnetism
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Exam prep: The earth's magnetic field and the compass
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Quiz: Magnetic field lines and their properties
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Practice set: The field around a straight current-carrying wire
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