Any quantity whose value does not change with time is called as constant. In physics there are 2 types of constants : Dimensional and dimensionless.
I have a throbbing on the right side of my neck. It comes and goes. It feels like an insect landing on my neck and when I go to swat it, it ends up being a slight pulsating in that area. Should I be concerned?
In a normal speed . Not too fast , not too slow but in a speed that is average