Thursday
December 5, 2013

# Posts by George

Total # Posts: 836

physics
Calculate the work done when a 18 N force pushes a cart 2.5 m.

Chemistry
What is the pH of a 0.77M solution of methylamin at 25 degree C? CH3NH2, Kb= 4.4X10-4? How do I set this up to get the answer?

maths
find the first 3 terms in the expansion of (x+4)(1+3x)^-2 as a series in ascending powers. I expanded the second bracket using binomial expansion and got 1 -6x +27x^2 -108x^3 how do I combine (x+4) with the expansion? Any help would be appreciated.

algebra
X= log base 3 1/27

Science
What is the momentum of a 50 kg carton that slides at 2 m/s across an icy surface? The sliding carton skids onto a rough surface and stops in 3 s. Calculate the force of friction it encounters.

science
A car with a mass of 700 kg moves at 18 m/s. What braking force is needed to bring the car to a halt in 10 s?

physics
In terms of impulse and momentum, why are airbags in automobiles a good idea? A.)Airbags actually do not help if a car is in an accident. B.)They increase the amount of force involved in a collision. C.)They decrease the amount of time for a collision to happen. D.)They increa...

Math
sorry i meant u too jj

Math
you too knight

Math
thx

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