Stopping potential or cut-off potential is defined as the required potential for stopping the removal of an electron from a metal surface when the incident light energy is greater than the work potential of the metal on which the incident light is focused
Stopping potential is defined as the potential required to stop ejection of electron from a metal surface when incident beam of energy greater than the work potential of metal is directed on it.
No, these fumes will not cause cancer nor will damage your hair. The only thing truly damaging your hair is blow drying it every day because it can dry it out, so try not to do that! It is not that bad though.
The American Heart Association recommends a minimum of 30 minutes of cardiovascular exercise 5 to 7 days per week. Don't forget warm-up, cool-down and stretching exercises in your aerobic exercise session