Recent content by Paul I.

Homework Statement Two light sources of identical strength are placed 8 m apart. An object is to be placed at a point P on a line ℓ parallel to the line joining the light sources and at a distance d meters from it (see the figure). We want to locate P on ℓ so that the intensity of illumination...

Yes thank you!I knew it was possible to write equations but i didn't know how because it looked highly complicated when ifirst tried! I'll be able to practice and make sure i know what I'm doing now!

Seems like you got it! Glad you are able to understand it! I'll say goodnight to you and hope to be able to help you in the future!

here's how my equation came up to be. this is how i learned it.

i hope it's not too messy. i used the equation i suggested before. then i just ended up using the coefficients and canceled out the P, n, and T. hope this makes sense.

I solved it in this image: Hopefully it's what you're looking for!

Oh ok. Yes, then in that case, since you know the initial temperature, pressure, and volume. You can then solve for the amount of moles. Once you have the answer for the amount of initial moles, you can multiply that by 4, then solve for the final pressure. That's how i would go about it.

You can actually use the following: (P1xV1)/(n1xT1)=((P2xV2)/(n2xT2) it accounts for the change in moles also. If you want me to show you why this is, i can show you.