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is a gas in which the molecules do not interact or the intermolecular forces can be neglected. (d)
The ideal gas equation is . Here we use absolute temperature, T, with unit Kelvin.
is the change in momentum or the product of force and time: . (d)
Its unit is N s (or kg m s-1).
is used to show the forces acting on a block which rests, or moves, along the plane:
The component of the weight down the plane is
occur when the total kinetic energy of a system decreases.
a material that does not allow the flow of electric charge through it.
of a substance is the total potential energy and random kinetic energy of the molecules of the substance. (d)
is radiation composed of particles that individually carry enough energy to liberate an electron from an atom thus ionizing it.
Taken from wikipedia.