Consider a (9,6) swcnt that is 1000 nm long and answer the following questions. a. what is the diameter of this swcnt? [the nearest distance in the graphene sheet, b=0.142] b. what is its chiral angle? c. is this tube metallic or semiconducting? d. assuming the elastic modulus of 1500 gpa, how much the nanotube will extend if a force of 1nn or 10-9n is applied along the axis of this tube? [elastic modulus= stress/strain, stress= force/cross-section area, strain= change in length/original length] e. estimate the number of defects in a (9,6) carbon nanotube that extends from earth to international space station (iss) that is approximately 200 miles above earth. the energy needed to create a point defect is 1 ev and assume the temperature to be 300 k