Recent content by songoku

I think so. By taking ΔV to the same, we can say that the work done by the system will be higher. Let me try: For same ΔV, work done by system is higher so the work done on system will be more negative. When the pressure is higher, the boiling point of the water increases so the particles will...

ΔU = Q + W Q = ΔU - W I am not sure how to analyze the changes in ΔU and W. The value of p increases, but how do we know about ΔV? For ΔU, the KE is constant and the PE increases since the molecules' separation is more but how do we compare the increase to the case of normal atmospheric...

Thank you very much for the explanation Rap and Gavran

I have found part (a): current on the left is 7/12 A from A to B current on the middle is 5/36 A from F to C current on the right is 13/18 A from D to E For part (b), what is the meaning of VBF? Is it VB - VF or VF - VB? My attempt is: VBF = I1 x R1 - ε1 = 7/12 x 4 - 1.5 = 5/6 V Is it...

Sorry for late reply Thank you very much for the help and explanation berkeman, kuruman, Steve4Physics, Gavran

Sorry I got the question in form of printed paper so I don't have the link. I think the answer is (d) but I am not sure how the distribution (shape) of magnetic field inside the steel sheet would be. Is there any possibility some part of the magnetic field is redistributed by the steel sheet...

The answer key is (a) but I don't understand why. Option (a), (b), (c) are all non - magnetic material and (d) is magnetic material. Why (a) can stop the attraction while others can't? Thanks

Thank you very much for all the help and explanation haruspex, wrobel, Herman Trivilino, 256bits, Steve4Physics, jbriggs444

avoid making the assumption and use all the information provided. For this question, consideration about breaking stress was not in my head until I read your reply

I see. I need to consider breaking stress What about the formula: Young Modulus = stress / strain? Does it work under large stress because I am thinking the breaking stress of both wire is the same so the strain on the second wire must be constant and can be achieved by using longer wire? Thanks

The answer is (B) but I don't really understand why. Based on formula of Young Modulus: $$x=\frac{FL}{AE}$$ The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and...

Thank you very much anuttarasammyak

The correct answer is (C) but I don't understand why (B) is wrong. Isn't (B) also the meaning of random process? I though (B) and (C) are both correct. Thanks

Thank you very much .Scott, haruspex, Gavran

For this case, is this also called induction?