Which of the following is a contact force? A. friction
B. magnetism
C. gravity
D. electricity

Drag each label to the correct location on the image list the do’s and don’ts of safeguarding your password. a. keep yourself logged in when you leave your computer. b. don’t write your password down and leave it where others can find it. c. share your password with your friends. d.each time you visit a website, retain the cookies on your computer. e. use a long password with mixed characters.1. do's 2. don'ts

If you want to import a picture into a dtp application, what must you do first? draw an image frame. import text. open the folder containing the file. select get image… from the windows menu.

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?