题目

A Charlotte, N.C., man was charged with first-degree murder of a 79-year-old woman whom police said he scared to death. In an attempt to evade policemen after a bank robbery, the Associated Press reports that 20-year-old Larry Whitfield broke into the home of Mary Parnell. Police say he didn’t touch Parnell but that she died after suffering a heart attack that was caused by terror. Can the guy be held responsible for the woman’s death? Prosecutors(公诉人) said that he can under the state’s murder rule, which allows someone to be charged with murder if he or she causes another person（1）如图甲，画出静止在水平面上重为10N的物体A所受的重力．（2）如图乙，画出静止在斜面上的物体所受到的重力．（3）如图丙，小球漂浮在水面上，画出小球的受力示意图．