谁帮我解答一道关于电势能的物理题 题目是这样的匀强点场方向水平向左,带正电的物体沿绝缘的水平板向右做匀变速运动,经过A点时,动能为100焦耳,到B点时动能减少了80焦耳,电势能增加了48
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![谁帮我解答一道关于电势能的物理题 题目是这样的匀强点场方向水平向左,带正电的物体沿绝缘的水平板向右做匀变速运动,经过A点时,动能为100焦耳,到B点时动能减少了80焦耳,电势能增加了48](/uploads/image/z/8345449-1-9.jpg?t=%E8%B0%81%E5%B8%AE%E6%88%91%E8%A7%A3%E7%AD%94%E4%B8%80%E9%81%93%E5%85%B3%E4%BA%8E%E7%94%B5%E5%8A%BF%E8%83%BD%E7%9A%84%E7%89%A9%E7%90%86%E9%A2%98+%E9%A2%98%E7%9B%AE%E6%98%AF%E8%BF%99%E6%A0%B7%E7%9A%84%E5%8C%80%E5%BC%BA%E7%82%B9%E5%9C%BA%E6%96%B9%E5%90%91%E6%B0%B4%E5%B9%B3%E5%90%91%E5%B7%A6%2C%E5%B8%A6%E6%AD%A3%E7%94%B5%E7%9A%84%E7%89%A9%E4%BD%93%E6%B2%BF%E7%BB%9D%E7%BC%98%E7%9A%84%E6%B0%B4%E5%B9%B3%E6%9D%BF%E5%90%91%E5%8F%B3%E5%81%9A%E5%8C%80%E5%8F%98%E9%80%9F%E8%BF%90%E5%8A%A8%2C%E7%BB%8F%E8%BF%87A%E7%82%B9%E6%97%B6%2C%E5%8A%A8%E8%83%BD%E4%B8%BA100%E7%84%A6%E8%80%B3%2C%E5%88%B0B%E7%82%B9%E6%97%B6%E5%8A%A8%E8%83%BD%E5%87%8F%E5%B0%91%E4%BA%8680%E7%84%A6%E8%80%B3%2C%E7%94%B5%E5%8A%BF%E8%83%BD%E5%A2%9E%E5%8A%A0%E4%BA%8648)
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