What is the angular speed ( in rads-¹) of a body whose frequency is 50HZ ​

100π

I hope I'm right (this exact question is in my physics textbook and that's the answer)

there are indirect ways of affecting state laws   by with holding funding's. and that's why we have a 55mph speed on the high way with a design of 70mph speed.

answer; people have no objective standard by which to judge themselves;