Is head a coserved quantity?

A scalar quantity and a vector quantity haivng the same dimensions are

16cm^(3) of water flows per second through a capillary tube of radius a cm and of length l cm when connected to a pressure head of h cm of water if a tube of the same length and radius a/2 cm is connected to the same pressure head the quantity of water flowing through the tube per second will be-

The pair containing a scalar quantity and vector quantity is

Assertion : All derived quantities may be represented dimensionally in terms of the base quantities. Reason : The dimensions of a base quantity in other base quantities are always zero.

Assertion : All derived quantities may be represented dimensionally in terms of the base quantities. Reason : The dimensions of a base quantity in other base quantities are always zero.

Which physical quantity has unit NC^(-1) ? Is it a vector or scalar quantity?

Which one of the following physical quantities is not a fundamental quantity?

If three coins are tossed simultaneously, find the probability of getting: (i) two heads (ii) one head and two tails (iii) at least one head

x and y are positive. {:("Quantity A","Quantity B"),(xy,(xy)^(2)):}

O is the center the circle. {:("Quantity A","Quantity B"),(x,90):}