Thursday
May 23, 2013

# Posts by katy

Total # Posts: 287

college
If Dr. Jones is practicing "defensive medicine," what is likely to be his motivation for doing so?

Calculus (repost)
Use implicit differentiation to find dy/dx if cos xy = 2x^2 - 3y. I'm stuck on this problem because I'm getting thrown off on how to factor this. Here's my work so far: -{[(dy/dx)y + y]sin xy} = 4x - 3(dy/dx) -{[(dy/dx)y + y]sinxy} + 3(dy/dx) = 4x ...now what? Thx

Calculus
Use implicit differentiation to find dy/dx if cos xy = 2x^2 - 3y. I'm stuck on this problem because I'm getting thrown off on how to factor this. Here's my work so far: -{[(dy/dx)y + y]sin xy} = 4x - 3(dy/dx) -{[(dy/dx)y + y]sinxy} + 3(dy/dx) = 4x ...now what? Thx

Biology
What biogeochemical cycles go on in a tropical rainforest? Thank you!!

this is for a crossword puzzle,a visitor to a new place,one on a tour?

physics
I have a Pressure in atm and a volume in liters how do i find the temperature in kelvins?? I know the formula pv=nRT works...but i don't know the number of moles so... I don't know what to do.

Physics
never mind. I made a silly error. i got .01804 moles...multiplied that times 4.03grams and then multiplied that times 1000 and got 72.7mg. got it! thanks so much!

Physics
so i got the answer to be .01804 moles and i know one mole of helium is 4.03 g do i just multiply the two together? and then divide by 10000 to convert g to mg?

Physics
doesnt that give me an answer in moles? ...is there a way to convert moles to mg?

Physics
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 373 K. If 15.0 J of work is done by the gas during this process, what is the mass of helium present? I am not sure what equations to use for this problem....

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