英语时差:坐旋转木马会头晕?B
教程:英语时差  浏览:435  
  • 00:00/00:00
  • 提示:点击文章中的单词,就可以看到词义解释
    Generally speaking, the larger the circle you move in, the greater the centripetal force you experience. So, the farther you move away from the center of the merry-go-round, the more force the merry-go-round must exert on you to keep you moving in that circle. All this extra force on your inner ear can make you lose your balance and feel quite dizzy. Another way to see centripetal force in action is with an old-fashioned record player. Place a penny near the center of a spinning record, and it will stay in place as it turns. Put the penny on the edge, however, and it will fly off the record, giving visible proof that the force at the edge of a spinning object is greater than at the center.
    0/0
      上一篇:英语时差:机械水蛭B 下一篇:英语时差:成熟的水果B

      本周热门

      受欢迎的教程

      下载听力课堂手机客户端
      随时随地练听力!(可离线学英语)