Here are some uses of materials. For each one, say If a named metal must be used, or a named non-metal or if either would be suitable. Explain your answer in each case.
a. Tent pole
b. Electrical power line
c. Electrical cable insulation
d. Bike frame

its not a choice. you dont choose if you want to be gay or straight.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.