A tall building is protected by a lightning conductor which consists of spiked top connected by a thick strip to a plate in the ground. 1)name a suitable material which should be used to make the thick strip 2)state what happens in the lightning conductor as a negatively charged cloud passes over the building. 3) identify the type of charge left in the spikes after the cloud passes over the building 4) say how the charge on the spikes affects the nearby air molecules​

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.