Boyles Law states that when a sample of gas is compressed at a constant temperature, the product of the pressure and the volume remains constant: PV C. (a) Find the rate of change of volume with respect to pressure. (b) A sample of gas is in a container at low pressure and is steadily compressed at constant temperature for 10 minutes. Is the volume decreasing more rapidly at the beginning or the end of the 10 minutes? Explain. (c) Prove that the isothermal compressibility (see Example 5) is given by 1yP.

Chpt 2 Composite Intro and Structures Composites: Bonding together two or more different materials to achieve their combined strength. If a composites Contains a fibrous material encapsulated by a matrix, then it can be called FRP Fiber Reinforced Plastic Advanced Composites: Composite with strength properties greater than a similar composite made with fiberglass material. Laminated Structures: Built-up layers of fibrous material. Sandwich Structures: A structure with core material bonded between two face plate. a. Core material usually has a low density b. Basic examples of core products are: foam honeycomb balsa wood 6. Matrix: A material in which fibers are imbedded. 7. Homogeneous: A structure comprised of the same (one) material. 8.Heterogeneous: A s