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Write a function which takes a single parameter, which is a binary tree. Return the number of leaves in the tree. (An empty tree should return 0.)

In a balanced Wheatstone bridge, what is the current through the galvanometer?

A bar magnet falls through a loop of wire with the north pole entering first. As the north pole enters the wire, the induced current will be (as viewed from above)

Provide the Lewis dot structures for the following three molecules and ions. Show all your work to generate the structures. a)  BI3 b) XeO3 c) NO2- Scan and submit your work for credit.

This figure is not a BST.  Give one reason why it is not a BST (there might be more than one reason, only give us one.)

Write a recursive function which takes an array as input, and prints the values of the inputs in pairs. The last line of output should contain both the first and last values from the array; the second-to-last line should contain the second and second-to-last, etc. (If the number of elements in the array is odd, then do not print the one in the middle.) Example:     INPUT: [ 1,2,3,4,5 ]     OUTPUT:        2 4        1 5

Why is it not possible to traverse a singly-linked list backwards?

Give the first six terms of the following sequences. You can assume that the sequences start with an index of 1 a) A geometric sequence in which the first value is 5 and the common ratio is 8. [3 points] b) An arithmetic sequence in which the first value is 34 and the common difference is 5. [3 points] c)  Evaluate the summation [4 points]

How many ways are there to permute the letters in the following words: a) “Tennessee”? [5 points] b)  “SOUPSPOON”? [5 points]

For the Developmental Profile Part 1 and Part 2 assignments in this course, you chose a young child below the age of thirty-six months and conducted multiple visits to get to know the child and family.  Include BOTH of these things in your answer: Tell me some things you now know about the child and family as a result of this assignment (that you did not know before) What activity did you conduct with the child? Why did you choose that activity for this child?