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.

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -

Well the magnitude of its acceleration related to that car starts with the oil change like when you have to change the oil in your car you have to make sure that your precious car is starting really propley and very well