Saturday
December 7, 2013

Posts by aj

Total # Posts: 254

math
(a). For any connected graph G, all internal nodes of the BFS tree on G have the same number of children. (b). For any connected graph G, the DFS tree on G and the BFS tree on G have the same number of edges.

math
Problem A: Let T be a balanced 5-ary tree with 81 nodes. (a). How many internal nodes does T have? (b). How many edges does the tree T have? (c). What is the height of T?

math
A bank account earns 10 percent interest compounded continously. What annual amount of money must parents deposit each year in order to save 110000 dollars in 9 years for a child's college expenses? Assume the annual amount is added continuously over the period of each year.

Physical science
(A) A red light source and a green light source shine on a white screen. What color will the screen be? Explain your answer (B) if a blue object is aced in front of the screen, what color will it be? Explain your answer

Physical science
Two hunting forks are struck at the same time. One tuning fork has a frequency of 20 Hz while the second fork has a frequency of 226 Hz. How many beats will result?

Physical science
A player uses a hockey stick to increase the speed of a 0.200 kg hockey puck by 6 m/s in 2 seconds. How much did the hockey puck accelerate? How much force was exerted on the puck? How much force did the puck exert on the hockey stick?

physics
Determine the resulting temperature when 150g of ice at 0°C is mixed with 300g of water at 50°C

physics
How much heat is absorbed by an electric refrigerator in charging 2 Kg of water at 15°C to ice at 0°C?

Math
you put y on one side so its x=3-y then substitute that into the bottom equation. so you get 3(3-y)+2y=2 which is 9-3y+2y=2 then just solve for y. y=7

Semicolon
Marielle, the coordinator, was eager to begin the speeches, awards presentation, and banquet, but the guest speaker, who was flying to Chicago, had not arrived. Do I need a semicolon in this sentence?

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