1. disturbance to transmit from one place to another in succession 2. equilibrium to bob back and forth in a regular way about a resting position 3. medium the natural or rest position of a particle 4. oscillate the displacement of an object from its equilibrium position by the input of energy 5. propagate any substance with a defined set of physical properties that can transmit energy

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

This is the substance(s) formed in a chemical reaction.

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)