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如图所示,巡查员站立于一空的贮液池边,检查池角处出液口的安全情况.已知池宽为L,照明灯到池底的距离为H.若保持照明光束方向不变,向贮液池中注入某种液体,当液面高为 H 2 时,池底的光斑距离出液口 L 4 .(1)试求当液面高为 2 3 H时,池底的光斑到出液口的距离x.(2)控制出液口缓慢地排出液体,使液面以v0的速率匀速下降,试求池底的光斑移动的速率vx.
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![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAA5ElEQVRYR2NkGGDAOMD2M+B0wKpVq9huv/jbxPD/fxwDA4MkhQ59zsDIuEhVgrkuLCzsF7JZOB3QOml5B8P//+UUWoyqnZGxszovsoI4B0xc9gyfzxmZmb2rcsK3IRvWMWm599///7fgcfTz6vwoKWId8B+f75kZGX0q8iK3kugAhur8KJRQxx0FE5fhdQC5UTPqgNEQGA2B0RAYDYHREBgNgaETAuTW96TqG7yt4tbRFhGRIQBqHTP9+8dIoDUMTxqk5AK8zXKYiaDWMYhNpANIaJYPdMdkwLtmpOZnctUPeDkAAP6tmiH1ggTLAAAAAElFTkSuQmCC)
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参考答案:
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参考解析:
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