B 9
Use base units to check whether the following equations are balanced:
(a) pressure = depth x density x gravitational field strength,
(b) energy = mass (speed of light.
The thermal energy needed to melt a solid of mass me without any change of
temperature is given by the equation
O-
where L is a constant. Find the base units of L.
10 Determine the base units of the following quantities:
(a) energy (force x distance)
(b) specific heat capacity.
(thermal energy change = mass specific heat capacity * temperature charige)
11 Show that the left-hand side of the equation
pressure. s* density * (speed - - constant
is homogeneous and find the base units of the constant on the right-hand side.