题目

Connie Monroe clicks a button, flicks her wrist and watches as her neighborhood floods. The shorelines are first to go. Then, the baseball fields at Fleming Park. By the time seawater reaches the senior center, it has flooded streets and over a dozen brick homes. Monroe moves her head up and down, side to side, taking in the simulated (仿真的) view. This is what could happen to Turner Station, a historic African American community southeast of Baltimore, as sea levels rise.Climate change presents many challenges to coastal communities and to those trying to prepare for its impacts, but one 将一水平放置的弹簧振子从平衡位置向右拉开1cm后释放，振子做振动．若第一次到平衡位置的时间为0.1s，则该振子的振幅为    ，请在如图上标出弹簧振子在B点时离开平衡位置O的位移和在A点时加速度的方向．