Question 1 Select the materials that can be classified as a composite (natural or synthetic). (select all that apply) O Tungsten carbide Platinum O Kevlar O Wood Carbon fiber-reinforced epoxyA 1 m long steel metal (with a Young's modulus of 207 GPa) is cooled from 150C to 25C while the ends are maintained rigid. Calculate how much thermal stress is generated as a result of cooling this metal down from 150 degrees Celsius to room temperature while the ends are maintained rigid. According to the data sheet provided, this metal has a coefficient of thermal expansion (at) of 11.7 ppm/C. Provide your answer in MPa. Note: 11.7- ppm 11.7 x 10- . C .CTrue or False. By using recycled aluminum, we save ~95% of the energy required to obtain aluminum from alumina. 0 True 0 False True or False. Currently in most parts of Canada. disposable cups for hot beverages (e.g.. from Aroma, Jimmy's coffee, etc.) are to be placed in garbage bins and not the recycling bins. The design makes it difcult to sort and recycle these disposable cups in our current facilities. as these cups are typically made of paper that are lined with plastic. 0 True 0 False True or False. Concrete, which is a type of composite material, uses cement as the binding agent. 0 True 0 False