Recent content by zwarrior

Oh ok. Thanks a lot. My last doubt ( An overview of this ) - more like a yes/no question. I supply 500mA of current from driver to Nichrome wire. So, because of this, heat generated in Nichrome wire is 0.79 J in 1 second. So, in 2 second 1.58 J. This heat is transferred to the Steel every...

I looked them up. My last attempt. Hopefully it's right. Power is rate of consuming Energy. (W) Energy tells quantity of work done. (J) Heat Capacity tells amount of heat required to change temperature of whole system by 1 C. Total heat capacity here is 7.05 J/C. But the heat available per...

Now, I have to use it here- ? time= (C*dT)/H where C= 7.05J/C, dT=0.175 C, H=0.79 J. So, I will get time=1.56 seconds. So, 1.56 seconds needed for steel to increase temperature by 0.175 C. So, 9.36 seconds to increase temperature of steel by 1 C ?

Heat Capacity= mass * specific heat Nichrome- C=10 * 0.45= 4.5 J/C Steel- C=5 * 0.51= 2.55 J/C So, I will get 7.05 J/C ?

You told me to add heat capacities. I mistook it as specific heat and added that and used it in the formula. So, Heat capacity formula is c=ΔQ/Δ T. where Δ Q is the amount of heat transferred, Δ T is the temperature difference. But, I can't add heat capacity of steel and nichrome because q is...

Ok. Hopefully this is right. t=(m*cp*dT)/H; where m is mass of steel=5; dT= 0.175 C; H=0.79 J; cp= 0.51+0.45=0.96 g J/g C So, t=(5*0.96*0.175)/0.79= 1.05s. To increase temperature by 0.175 C, steel takes 1 second. So, time taken by steel to raise temperature of 1 C=~6 seconds. Is this also...

Ok. Here, I am heating Steel. Need some clarification. Again got confused. Heat will transfer from hot body to cold body till the cold body temperature=hot body temperature right? Now after 1 second, Nichrome will be at 0.175 C ( Assume initial temperature = 0 C for calculation convenience)...

I honestly can't think of any other way to do it. Should I change the formula or modify the answer with the same formula? Logically thinking, I think the formula is right but I have to add some other quantity to it? Sorry for bothering you again.

Thanks for the reply. Ok, so only 3rd part is wrong? I redid the calculations. I used the formula, q=m*c*dT. where m=5g, c=0.51 J/gC. dT=0.175C. I got q=0.446J. So, I need 0.446J to raise temperature of steel by 0.175 C. But I have 0.79J(from answer 1) available. By cross multiplication, the...

Hello all. I want to do some experiment but I thought I would go over this theoretically before trying out and now I have a doubt. Homework Statement I have a driver which produces say 600mA. I connect the driver to one end of Nichrome Wire. And the other end of Nichrome wire is in contact...