Recent content by lew0049

Wow after I submitted the answer for the 3rd time, it gave me a link to the solution. The answer was NEGATIVE 2.14E-4 which is wrong and a self-contradiction because something cannot shrink by a negative number - that would essentially mean it lengthened. And this is why HW done via websites...

yeah I completely agree but we have to submit our HW on a website (wiley). I still haven't found a problem with my answer though. Oh well, thanks anyways.

I'm assuming the sled started from rest.

Exactly, without some sort of velocity or acceleration given I found this problem to be very confusing. Here is how our teacher broke it down (and no additionally information was given regarding the above assumptions and no diagram was given): Note: when she worked the problem and showed a...

I really appreciate the input and I will respond in-depth tmw when my eyes aren't almost shut haha. The thought process is precisely the problem I have though.

As far as I know, that is correct. It's slightly frustrating because I can't think of any reason my answer is wrong.

My attempt included finding the x-values of forces but I had no clue what to do after I read the sled went off the inclined plane. So I was stuck with multiple equations yet no idea how how/where to plug them in. Thanks again.

My teacher wrote out the formulas but its rather difficult to follow when you are trying to write down the formula also. I'm sure you know this but the final answer is u = h/(l+s)

Honestly, it would be greatly appreciated if you could help explain your thought process behind a problem such as this (because I'm sure this will type of problem will be on the final). The biggest problem I have with physics is having the correct mindset, if that makes sense. I have a B.S. and...

Hey, I am currently taking the pre-reqs for medical school and was wondering how difficult this question is for anyone interested. It was on our most recent exam and for Physics I, and I found this question to be too difficult considering there was another difficult conceptual problem (where...

Hey guys, the following is a HW question I believe I am doing correctly but I'm not getting the correct answer, any input would be appreciated! Q uestion: A rod made from a particular alloy is heated from 27.5 °C to 127 °C. Its length increases by 9.13 x 10-4 m. The rod is then cooled from...