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<img src="data/attachment/block/b6/b603f3b0824bdcdf66e9a010964affc1.jpg" width="60" height="60" alt="韦德娱乐家装团" />
韦德娱乐君 邀你参加最帮的家装会
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韦德娱乐画报...
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<img alt="邰正宵来韦德娱乐开演唱会" src="data/attachment/portal//ppe2psw7upp7uj.jpg" class="small_pic">
邰正宵来韦德娱乐开演唱会
有关感冒的10个事实
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<img alt="韦德娱乐这几家龙虾店" src="data/attachment/portal//161654dyizyy4lyz4a7nfb.png" class="small_pic">
韦德娱乐这几家龙虾店
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新人往往不喜欢清新可人的照片，喜欢特立独行，展现人独特魅力的照片。这样的话，新人不防尝试一下拍摄性感风格的婚纱摄影吧。那么新人在拍摄性感婚纱摄影的时候应该注意哪些问题？
担心孩子会输在起跑线！这是如今每一位家长操碎了心的事~于是乎各种兴趣班也应运而生，这下家长着急了，别人孩子学咱家的也不能落下啊！可是孩子到底该学什么？什么时候学才合适？到底是孩子想学还是你们想让他学？
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民以食为天~so，谁不让我吃饱我跟谁急！简单、粗暴的下饭菜，好吃管饱。
创作是韦德娱乐的一部分，而那些顶着“设计师总监”、“首席设计师”等名号的汽车设计们，如果不画汽车，他们还会干什么？
车韦德娱乐向导
摄影专区 在这里发现最美韦德娱乐
风景如画 伟星“蓝山半山墅”
美丽的雨山湖
映日荷花别样红
妳是人間四月天
寻找韦德娱乐正能量女神
淡淡の花香
What Makes You Beautiful
双马尾和小熊
DREAM PRODUCTION
失恋33天-part.1
Copyright &
All Rights Reserved. 韦德娱乐网版权所有体积为177cm3的空心铝球下面系一个体积为10cm3的实心铁球，它们恰好悬浮在水中，铝球实心部分的体积是（　　）（铝的密度为2.7g/cm3，铁的密度为7.9g/cm3）A. 40&cm3B. 68&cm3C. 108&cm3D. 137&cm3
哈哈哈哈_702
（1）∵ρ铁=铁V铁，∴m铁=ρ铁V铁=7.9g/cm3×10cm3=79g，（2）∵两球恰好悬浮，∴F浮=G总=ρ水gV排=1.0×103kg/m3×10N/kg×（177+10）×10-6m3=1.87N；m总=总g==0.187kg=187g，（3）m铝=m总-m铁=187g-79g=108g，∵ρ=，∴铝球实心部分的体积V=铝ρ铝=3=40cm3．故选A．
为您推荐：
其他类似问题
（1）根据实心铁球的体积和密度可求出铁球的质量，然后可知其重力．（2）根据铝球和铁球恰好悬浮，此时浮力等于重力，利用根据阿基米德原理F浮=G=ρV排g 可求铝球和铁球的总重力；（3）用总重力减去铁球的重力即为铝球的重力，知道铝的密度，利用密度公式求出其实心部分的体积．
本题考点：
密度公式的应用．
考点点评：
本题综合考查了密度的计算、重力的计算、浮力的计算（阿基米德原理、悬浮条件），知识点多，属于难题．
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