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 ry o 8w2 sm.ht+s+4 dbpi2pv i5*n;hfq20.0 m hig32b3 +idnnb8qkq xhrdsy d+52h. How much work is required5b2bhdxi2 q dq8n++dk yr3n s3?    J

参考答案: 12700±2%


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