# Search results

1. ### Higher Chemical Concentration = Higher Temperature of Precipitation. Why?

i honestly have no clue what this is all about but someone else posted up that same question and got some posts here: https://www.physicsforums.com/showthread.php?t=162382 hope that helps
2. ### Enthelpy Change in coffee cup

Alright let's think this through, I'm studying enthalopy changes right now so I'm going to give this a try:tongue2: You're right about the equation: "H = mass*C (or specific heat capacity)*Change in Temp" I honestly haven't heard of the second equation you mentioned but I know I can...
3. ### A simple unit conversion problem that I don't get.

Still a bit confused... You're right I forgot about the rule of exponents, but I'm still a bit confused about "And of course dm^3 is a unit of volume equal to 1000 cubic centimeters (10 cm * 10 cm * 10 cm = 1000 cm^3 = 1 dm^3)." :confused: can anyone simplify this concept any further? P.S...
4. ### A simple unit conversion problem that I don't get.

The question is a enthalopy problem where the enthalopy has to be caluculated per mole at the end. I understand how to calculate the enthalopy change, but I can't seem to calculate the number of moles in the question to be able to calculate the change in enthalapy per mole. I'm given 50.0 cm^3...

THX so much!
6. ### Tug of War: Real Quick does anyone have any ideas?

1. Using principals of physics explain why the team with the largest mass is most likely 2 win. What can the team with less mass do to try and make up? Any ideas? So far i think that b/c the team has more mass it will produce more forece and therefore more acceleration, but i can't think...
7. ### IB 11 Question: Circular Acceleration Problem Involving Forces

wait no i got it, my bad it was a calculation error!:blushing:
8. ### IB 11 Question: Circular Acceleration Problem Involving Forces

actually sumone in my class told me that i should have used 90(degrees) minus theta in my second triangle , it works but i don't know why??
9. ### Rotational Dynamics Question

I'm new to this forum but just a general hint i post my pictures on photobucket.com and then just click the image button where i want it in the post and paste in the link ...
10. ### IB 11 Question: Circular Acceleration Problem Involving Forces

As you can all pretty much see that was my first post, if I'm doing anything wrong, (asking the wrong kind of question, not clear, whatever it is) let me know, thx
11. ### IB 11 Question: Circular Acceleration Problem Involving Forces

Hi, this question is a part of an 'online homework packet I received through my IB 11 SL course (ie. International Baccalaureate 11 Standard Leval). I submitted my first attempt to answer this question and had the wonderful "sorry your answer is incorrect" screen pop up. I was wondering if I...