64) A quantity measured in the C.G.S system of units has dimensions M″2L3 T3/2. What numerical factor would be required to convert the quantity to SI units

65) The unit of rotational inertia of a body in C.G.S system is

66) The ratio of unit of force in gravitational system to that in absolute system is [where ′g′ is acceleration due to gravity]

67) In SI units, the units of force and energy are respectively

68) The dimensions of power are.