Wednesday
June 19, 2013

Posts by Charlie

Total # Posts: 342

college chemistry
whats is the boiling point of a solution composed of 17.6g of urea in (NH2)2CO in .300 kg of water

college chemistry
whats is the boiling point of a solution composed of 17.6g of urea in (NH2)2CO in .300 kg of water

physics
the passenger's weight is ALWAYS mass x acceleration. Can you work out the acceleration at all 3 stages? The mass of the person is the same for all 3.

Suppose you surveyed 50 students and 34 said that they approve of how the president is doing. Construct 90%, 95%, and 99% confidence intervals for the true proportion of students in your school who approve of how the president is doing. Be sure to specifically calculate the ma...

college physics
A box on a frictionless horizontal surface is pulled by a tension of 42.4N directed at 45 degrees above the horizontal. what is the work done on the box as it moves 2.50 meters along the surface?

college physics
A box on a frictionless surface is pulled back a distance x into a spring with spring constant k and released. What is the formula for the kinetic energy of the box after it leaves the spring?

College Physics
A 50 kg skater moving at 5 m/s over frictionless ice grabs a rope stretched out 10m from a post and perpendicular to her path. She then moves in circles, spiraling inward as the rope wraps around the post. How fast is she moving when she is 2 meters from the post?

3p - 1.5

math
let me retype the question. Sorry for the scribble. 1/2 X 1/2 answer in simplest form. must show work. thanks

math
desperately seeking help. work must be shown. answer must be in simplest form. Thanks 1 1 _ X _ 2 2

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