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{"question": "Compared with the mass of a uranium atom undergoing fission, the combined masses of the products after fission are", "options": ["less", "more", "the same", "zero"], "answer": "A"}
{"question": "Things that are equivalent according to the equivalence principle are", "options": ["space and time.", "a traveling twin and a stay-at-home twin.", "gravity and acceleration.", "mass and energy."], "answer": "C"}
{"question": "Colors in a soap bubble result from light", "options": ["converted to a different frequency", "deflection", "interference", "polarization"], "answer": "C"}
{"question": "A model airplane flies slower when flying into the wind and faster with wind at its back. When launched at right angles to the wind a cross wind its groundspeed compared with flying in still air is", "options": ["the same", "greater", "less", "either greater or less depending on wind speed"], "answer": "B"}
{"question": "Which of these three elements has the most mass per nucleon?", "options": ["Hydrogen", "Iron", "Uranium", "Same in each"], "answer": "A"}
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