Physics
Fat can be seperated from milk in a cream seperator because of :

Gravitational Force
Centrifugal Force
Cohesive Force
Centripetal Force

ANSWER DOWNLOAD EXAMIANS APP

Physics
Pressure Cooker cooks faster because

Higher temperature is attained for cooking
It cooks the food at low pressure
Boiling point decreases with rise of pressure
The material of the cooker is a good conductor

ANSWER DOWNLOAD EXAMIANS APP