Tuesday
June 18, 2013

# Posts by sophie

Total # Posts: 343

Calculus
find the derivative of 4x(lnx+ln9)-9x+e

Calculus
find the derivative of g(a)=sin(arcsin(9a))

physics
a crate is pushed to the top of a frictionless inclined plane 15 m long with a force of 25 N. If the crate weighs 125 N, how high is the inclined plane? 0.5 m 1 m 3 m or 5 m

math

maths
i have got to find the perimeter of a triangle that has one side of 8x-7w another that says 3x+9y and then another that says 3y+5w whats the perimeter of the triangle ??? please help

science
How many moles of oxygen molecules, O2, are required to produce 0.268 mol of K2Cr2O7? Show your work.

Physics
An isolated 3 kg object is moving in the positive y direction along the -y axis at 2 m/s; when it reaches the origin it breaks into two pieces sending a 1 kg fragment in the +y direction at a speed of 3.7 m/s. what are the velocity and direction of the other piece immediately ...

Physics
a 60 kg person falls off a 15 kg sled moving at 2 m/s. The person doesn't move after falling. Assuming no friction with the ice, and not other net forces acting on the sled, what is the change in velocity of the sled after the person falls off.