459 prompts matching "Quiz: Sound as a longitudinal wave that needs a medium"
Worked example: Finding acceleration from the gradient of a velocity-time graph
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Practice set: Finding distance from the area under a velocity-time graph
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Exam prep: Motion under gravity and free fall
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Spot my mistake: Confusing the gradient with the area on a motion graph
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Let me explain: Friction, its causes and its effects
I have just studied friction, its causes and its effects in my SS1 Physics class. Let me e
Worked example: Calculating the resultant of two forces
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Practice set: What circular motion is, and what keeps a body in it
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Exam prep: Centripetal force and centripetal acceleration
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Let me explain: Representing a vector by a directed line segment
I have just studied representing a vector by a directed line segment in my SS1 Physics cla
Worked example: Adding two vectors by the parallelogram rule
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Practice set: Adding vectors by the triangle rule
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Exam prep: Resolving a vector into its components
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Let me explain: The conditions under which no work is done
I have just studied the conditions under which no work is done in my SS1 Physics class. Le
Worked example: Calculating the work done against gravity
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Practice set: What energy is, and the forms it takes
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Exam prep: The joule, and the units of work and energy
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Let me explain: The watt and the kilowatt-hour
I have just studied the watt and the kilowatt-hour in my SS1 Physics class. Let me explain
Worked example: Calculating the power of a machine lifting a load
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Practice set: Efficiency, and why no machine is perfect
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Exam prep: Calculating the efficiency of a machine
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