Two bars, one copper one steel. Steel one is 500mm and the copper one is 25mmless. Coefficient of expansion for the bars are 12x10^-6 and 17x10^-6 for steeland copper respectively. Initial Temperature is 20 degrees C. What is the finaltemperature when both bars have equal length?
A rebuilt title or salvage car for under $2000 can be a good value. It was wrecked and repaired on the cheap. But, for $2000 or less, you cant be picky. If I were you, I would look for ugly cars that other people wouldn't be caught dead in that run drive great. And or manual transmissions. Both bring values down which can make them good values.
rebulit means that the cars was in a crash and has damdge and they fixed it salvage means it could be so many things that happend to the car flood or theft oranything of that kind as of good deal for only 2000$ i doubt but good luck, always consider taking a mechanic because losing 100 bucks better than losing your 2000$ on a stupid car that u will have to get rid of soon after
Unless there's a clean title (not a salvage or rebuilt) I'd stay clear of the vehicle. Ask to see the title BEFORE you make the purchase. I'd take the car for a test drive and take it to a mechanic who, for $100.00, will give you an inspection and probably tell you if it is worth it.
?L/L α?T, α is linear thermal expansion coef ?L αL?T Copper ?L (17e-6)475?T Steel ?L (12e-6)500?T final length L+ ?L Copper L+ ?L 475+ (17e-6)475?T Steel L+ ?L 500+ (12e-6)500?T set them equal 475 + (17e-6)475?T 500 + (12e-6)500?T solve for ?T 0.008075?T 25 + 0.006?T 0.002075?T 25 ?T 12048? seems high, but the change is large. Copper melts at 1085? so the temperature is meaningless.
