Recent content by butters120

ahhhh i give up i can't do it :(

erm i have said Th=100 at one of the brass plate to the rubber, Th-Tc is the temperature difference across the rubber, and used Tc=0 assuming that the heat from the rubber is being transferred to the brass; i think this is the part that is wrong. ahh its infuriating me now :(

I have: 500(100-Tc)/0.5=500(Th-0)/0.5=(Th-Tc)/0.1 but i either get 50 or 0 and i somehow don't think this is correct :(

what would be the 3rd? would i set th=100 for 1 brass slab, Tc=0 for the other slab; i am unsure what is happening for the 3rd slab :S

hmm, for steady state transfer would they be equal? I am really not sure about this :( would i set k[Dt/dx]=k[dT/dx] for the brass and the rubber? with K=500 for brass and K=1 for rubber? and maybe Th = 100 in one case and Tc=0 in the other and get T ? i don't know i am el stupide

Homework Statement Two brass plates, each 0.5 cm thick, have a rubber spacer sheet between them, which is 0.1 cm thick. The outer side of one brass plate is kept at 0 oC, while the outer side of the other is at 100 oC. Find the temperature of the two sides of rubber spacer if the thermal...

Here is the question that i am struggling with. A motorist passes a red traffic-light (wavelength = 650 nm). The motorist’s velocity makes an angle theta to the direction of light from the traffic light. Write down in four- vector and matrix form the relationship between the four-momentum of...