問題詳情
11. 科學家最近發現一顆繞行紅矮星436b的行星，紅矮星436b是一顆陰暗的恆星，質量約略為太陽質量的一半，此行星質量約為地球20倍，其大小約與太陽系的海王星相等，此行星距紅矮星436b約410萬公里，求此行星與紅矮星436b之間的引力大小為何？ 
參考答案
答案：A[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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