Thursday
May 23, 2013

# Posts by jan

Total # Posts: 262

Physics
A 12000 kg airplane launched by a catapult from an aircraft carrier is accelerated from 0 to 200 km/h in 3 s. (a) How many times the acceleration due to gravity is the airplane's acceleration? (b) What is the average force the catapult exerts on the airplane?

Math
You are correct the answer is B.

Chemistry
A common laboratory reaction is the neutralization of an acid with a base. When 50.0 mL of the .500 M HCl at 25 C is assed to 50 mL of .500 M NaOH at 25 C in a coffee cup calorimeter, the temperature of the mixture rises to 28.2 C. What is the heat of reaction per mole of acid...

math
Hanna and Fran have 120. Hanna and Pete have 230.Pete has 6 times as much as Hanna. How much does Hanna have?

Calculus
Suppose f and g are inverses, and (1,5) is a point on the graph of f. If f'(1) = -3, what, if anything, does that tell us about g'(1).

math
what is the value of |x+3|+5x-7 for x =9

math
are these numbers ordered from the least to the greatest 0,1.square route of 2.3/2.square root of 3

math
If a board 4 ft.X 8 ft. was cut into 50 pieces, what size would each piece be?

history
Which of the following is true of President G. W. Bush? A. He reluctantly endorsed the Kyoto Protocol. B. He accepted the United States' role in the International Criminal Court. C. He vowed to punish all countries sponsoring terrorism. D. He rejected unilateralism.

science
An element emits one alpha particle, one positron, and three beta particles. Its atomic number.... decreases by 2 decreases by 1 stays the same increases by 1 increases by 2

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