Consider the following short paragraph:
on a computer with a single core cpu, attempting to program real concurrency between two processes (as opposed to apparent concurrency) is impossible, because the cpu can in actuality only do one thing at a time. to fake the user into thinking that more than one process is running at the same time, the cpu can, for example, switch back and forth between running each process very quickly.
choose one of the following statements about this paragraph:
a) it is all trueb) it is all falsec) some of it is true, and some of it is false

5.a fishing rod is formed from a composite material of 0.5 kg of glass fibers embedded in a matrix of 0.5 kg of epoxy resin. the glass fibers are assumed to be long, continuous and unidirectional. to achieve a greater stiffness it is proposed to use a different composite that is comprised of long continuous carbon fibers that will be embedded in a matrix of 0.5 kg of epoxy resin. if the modulus of elasticity of the carbon fiber composite is 10% greater than the elastic modulus of the glass fiber composite, estimate the mass of carbon fibers that will be used to make the carbon fiber composite. assume the applied tensile stress is parallel to the direction of the long axis of the fibers. the epoxy resin, glass fiber, and carbon fiber have an elastic modulus of 5, 86, and 350 gpa respectively and a density of 1100, 2500, and 1800 respectively.