probably too late to help, but OH is a polyatomic, when we balance equations, we always look at the atoms themselves. When you get better, then you can learn to balance by polyatomics, but when you're first learning it is best to just look at the individual elements.

still kicking. just haven't been making content for a minute.

@@turdfurg67 Fine then

Sorry, I'm late on this one. You can do basic mv + mv problems without conversion because the units cancel out. That being said, if you want to do impulse or energy calculations then you must change everything to kg. It's just a lot of problems are just looking for velocity, so say for example it was a helium nucleus and a hydrogen nucleus colliding, then you could use 4 amu and 1 amu in the mv + mv portion and still come out correct and save you from using their x10^-27 kg actual values.

you are toooooo kind :)

I would settle for better than average, but thank you :)

thanks?

probably too late to help now, but hopefully you figured it out. I had my notifications off.

we may have derived the special equation from using KE, but we are working with momentum and must maintain the vector nature. Forgetting (+) and (-) is the number one reason students miss points on these. I would teach you to always use your signs and in the advent of it being a scalar like work or energy, then it would eventually square itself out and become positive through calculations.

Normally physics/chem people aren't known for the quality of their jokes, but if your expectations are low, then maybe I won't let you down :)

You are welcome, and it's very hard to hide an Alabama accent lol.

2 weeks late. Sorry I've been working at another university and just returning to normal life. And sorry, I have no social feeds to receive photos, but links in comments were always available.

@@turdfurg67 got it thanks

I need help with this please, the question has a diagram as well, if there is anyother way to send it to u i wud be glad to do so

thanks for commenting, if you have ideas for videos, just post them here, although my surface pen just died so it'll be a few days for a replacement.

@@turdfurg67 got it !! Thanks alot

Greatest Orator of All Time? GOoat...

glad to see people still reading calipers. Thanks for commenting.

all physics is funny. see it the right way and it's super easy. Glad it help :)

Thank you so much :)

in the back ground i'm hearing the eighties song "i need a hero" playing. No joke i'm about to youtube it now lol. glad it helped.

That was a user requested once. You don't see it often. Glad it helped.

think of it as a number line. since this is one dimensional the 8 ball is going in the chosen negative direction.

Thanks. I actually thought this was a good series I put together for an APC group but hasn't had many views. Again, many thanks.

Another victory! I'm glad it helped.

Whenever you do one of these, it's usually best to take the difference of the two torques so that you end up with a positive value for your angular acceleration. Here is a newer version of this video that does a better job explaining it ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-a76B0i9w-To.htmlsi=1-hNNVnW-svD1_KQ