gc physics textbook chapter 6 problems (id: fb0f1a34c)

本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学

[填空题]
A 65.0-kg firefighter climbs a flight of stairs 20.0 g3lkpf4+-di ald ro *.m high. How mu r6, .j-jn/*rjk4bhcah j/f yvr *9ecwch work is reqy6 vr/j*-rbjewca9 4f ,* j. nr/jkhhcuired?    J

参考答案: 12700±2%


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