Which of these would have the greatest potential energy?
a) a roller coaster at the top of a hill.
b) a roller coaster half-way up the hill.
c) a roller coaster half-way down the hill.
d) a roller coaster at the bottom of the hill.

The following function returns a string of length n whose characters are all 'x'. give the order of growth (as a function of n) of the running time. recall that concatenating two strings in java takes time proportional to the sum of their lengths. public static string f(int n) { if (n == 0) return ""; if (n == 1) return "x"; return f(n/2) + f(n - n/2); } options: a) constant b) logarithmic c) linear d) linearithmic e)quadratic f)cubic g) exponential

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In excel, what happens to the cell contents when you click and drag a cell into multiple cells?