10.
已知一条曲线\(C\)在\(y\)轴右边,\(C\)上每一点到点\(F\left(1,0\right) \)的距离减去它到\(y\)轴距离的差都是\(1\).
\((\)Ⅰ\()\)求曲线\(C\)的方程;
\((\)Ⅱ\()\)是否存在正数\(m\),对于过点\(M\left( m,0 \right)\)且与曲线\(C\)有两个交点\(A,B\)的任一直线,都有\(\overrightarrow{FA}\cdot \overrightarrow{FB} < 0?\)若存在,求出\(m\)的取值范围;若不存在,请说明理由.