Question

Calculate the de broglie wavelength of an electron moving with

Answer 1

And the number of steps it takes to burn the entire tree is the maximum of those two. (or just the longest path to any leaf if the starting node isn't below it). at any given time is equal to the recursion depth (i.e. the height of the tree).  through all nodes and keep track of the distance of each node

Answer 2

And the number of steps it takes to burn the entire tree is the maximum of those two