# Recent content by Searay330

1. ### Finding temperature coefficient of resistivity of the alloy

It Makes perfect sense to me but the homework program told me i got the wrong answer. is there some mistake in my calculation?
2. ### Finding temperature coefficient of resistivity of the alloy

oh it must have 1/C
3. ### Finding temperature coefficient of resistivity of the alloy

well that would mean the Amps cancel leaving that as just a number and the only unit left is C which x picks up when its distributed across those numbers. correct
4. ### Finding temperature coefficient of resistivity of the alloy

.7145557656 (A/A cancels) = (1 - (32.4xC)) - (32.4xC) = .2854442344 - xC = .2854442344/32.4 x = .0088100072 C
5. ### Finding temperature coefficient of resistivity of the alloy

well that's my problem it says my answers units should be C-1 but by using the formula wouldn't the units just be C
6. ### Finding temperature coefficient of resistivity of the alloy

so then plugging everything in you would get .378/.529 = (1- x(52.4-20)) meaning x = .0088100072
7. ### Finding temperature coefficient of resistivity of the alloy

right so you can changed the formula to be I2/I1 = (1 - TCOR(TF - TI))
8. ### Finding temperature coefficient of resistivity of the alloy

how can the resistance be constant if the voltage is constant and the current changes?
9. ### Finding temperature coefficient of resistivity of the alloy

Suppose a wire made from an unknown alloy and having a temperature of 20.0°C carries a current of 0.529 A. At 52.4°C the current is 0.378 A for the same potential difference. Find the temperature coefficient of resistivity of the alloy. tempinital = 20C tempfinal = 52.4C currentInital = .529A...

yes
11. ### Thermal Expansion linear vs area expansion

its increased by 2(αLΔT) one for each side
12. ### Thermal Expansion linear vs area expansion

im not sure the change in area would be equal to the new L2 and that is the only dimension that changes
13. ### Thermal Expansion linear vs area expansion

this is a picture of my notes for thermal expansion for linear vs area. my question is why does the area coefficient of expansion for the area = 2(liner coefficient of expansion). any insight would be appreciated.
14. ### Change In Internal Energy Of An Ideal Gas

Right so if the internal energy doesn't change that means that for part c Q = W or 2.5KJ Thank you very much for your help
15. ### Change In Internal Energy Of An Ideal Gas

i am not sure because if it is contact with the heat reservoir that would that mean that temperature doesn't change and it would be 0