Recent content by Mathy

ps yes its right there was a typo its was pv 1.2 not 12

I now know that for the first part i need to get final temperature then put it into u=mCVdt dt=(t2-t1) cv=0.718 then Q=U+W I think w is simply the enrgy stated at the start 3.4 MJ = 3400KJ so Q=U+3400KJ then i find change in internal enrgy with: can anynone tell me whether this is right. I am...

oesnt matter i have done it i was doing t-mg=ma but in this case its t+mg=ma, so no need to reply

Hey as i have had some help with my thermodynamics why not my mechanics too. I have a question of four parts, a b c d, i have worked out a b and d but can't do c A 2kg sphere attached to a light arm or length 0.5m is released from a horizontal postition to hit a 10kg carriage which is backed...

Thanks should help Yes those all seem familiar, i have used them in questions but i am still not familiar with the thermodynamics physics enough to tackle any question straight off. i know enough once i get started, so thanks i think that will be fine. I let you know how i get on

Yes indeed Yes that's it. but i also made a mistake with my phrasing, i want to know the final temperature, not the final volume. The question asks for the final temperature. I am not sure because i don't know temp final but i also don't seem to know v2 either.

I have done a series of thermodynamics questions covering heat transfer, internal energy, temperature pressure etc. I have a new one but I am unsure how to start it, its unlclear whether i know certain things. I can do the question form looking back at pervious questions, if i knew how to start...