500 prompts matching "The decay constant and the activity of a source"
Quiz: The unit of momentum and its direction
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Let me explain: Energy transfer and the conservation of energy
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Quiz: The expansion of solids, liquids and gases compared
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Exam prep: The anomalous behaviour of water between zero and four degrees
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Quiz: Measuring the density of a solid and of a liquid
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Exam prep: Archimedes' principle and the law of flotation stated
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Let me explain: The formation of shadows, the umbra and the penumbra
I have just studied the formation of shadows, the umbra and the penumbra in my SS1 Physics
Worked example: Calculating the size of a shadow cast by a point source
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Exam prep: Eclipses of the sun and of the moon
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Teach me: The shapes and actions of converging and diverging lenses
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Quiz: Hooke's law and the spring constant
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Quiz: The two kinds of charge and how they behave towards each other
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Let me explain: Interference and the superposition of waves
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Quiz: The independence of the horizontal and vertical motion
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Let me explain: The path of a projectile, and why it is a parabola
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Exam prep: The equations of uniformly accelerated motion
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Spot my mistake: Using an equation of motion when the acceleration is not uniform
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Quiz: Finding speed from the gradient of a distance-time graph
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Exam prep: Calculating the efficiency of a machine
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Quiz: Calculating the kinetic energy of a moving body
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