Scalars are physical quantities which are completely specified by __________

Vectors are physical quantities which are completely specified by ___________

Vectors are physical quantities which are completely specified by ___________

Two vectors of different physical quantities can be __________ to obtain a scalar.

Two vectors of different physical quantities can be __________ to obtain a scalar.

State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful :- multiplying any two scalars,

State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful :- multiplying any vector by any scalar,

State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful :- adding any two scalars,

In defining the standard of length we have to specify the temperature at which measurement should be made. Are we justified in calling length a fundamental quantity if another physical quantity, temperature has to be specified in choosing a standard?

In difining the standerd of length, we have to specify the temperature at which the measurement should be made. Are we justified in calling length a fundamental quantity, if another physical quantity (temperature) has to be specified in choosing a standeard?