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For each person, describe the interval of time between seeing the lightning and hearing the thunder, then explain your answer. person A description of time interval person B description of time interval explanation
Physics 0625 · IGCSE · Sound
Sound — practice question
Two people are looking at a storm cloud over a tree. Person A is viewing it from her home, while person B is observing from a hill far away. Lightning produces a vivid flash and a loud clap of thunder at the same moment. The bolt hits the tree close to person A’s house, as shown in Fig. 7.1.
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This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Person A: lightning is seen and thunder is heard at (almost) the same time” …
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