state for each of the following physical quantities if it is scalar or vector. temperature, pressure ,imPulse ,time, power, total path length, energy, gravitational potential ,coefficient of friction and charge?
Answers
Q. State the given physical quantities are scalar or vector.
→temperature pressure ,impulse ,time, power, total path length, energy, gravitational potential ,coefficient of friction and charge?
Ans :-
Vector →pressure, Impulse, gravitational potential.
Scalar → Temperature, time, power, total path length, energy,charge, coefficient of friction.
Vector Quantity :- Those quantity which have magnitude as well as direction and follows vector law of addition and subtraction is called vector quantity.
Ex :- Force, displacement, velocity etc.
Scalar quantity :- Those quantity which have magnitude but don't need direction for their expression is called a scalar quantity.
Ex :- Area, volume, time etc.
Exceptional :- Current has both magnitude and direction but it is not a vector quantity because it doesn't obeys the vector law's.
hence, it's important for a vector quantity to first follow the vector's law then it is said to be a vector quantity.