Recent content by brianeyes88677

Google, IBM, Rigetti, and IQM all manufacture superconducting quantum computers. What are the main reasons for the differences in the accuracy of their chips? IBM has recently released its latest chip, please analyze and see what is the advancement in the technology...

This is not a homework, it's just a concept that flash through my mind. If it is a capacitor just like you say, the amount of charges on the two spheres should be the same, but I think this isn't reasonable, how can it be stable if the amount of charges are the same?

If it is a capacitor then what's the ratio of the amount of charges on the both sphere? (the radii are r and R)

There are two spherical shells in different sizes and they are concentric. Now if I connect a battery to the two spheres (connect the negative pole to the smaller sphere and connect the positive pole to the bigger sphere). Will this system become stable? Or is there any situation for the charges...

There are two spherical shells in different sizes and they are concentric. Now if I connect a battery to the two spheres (connect the negative pole to the smaller sphere and connect the positive pole to the bigger sphere). Will this system become stable? Is there any situation for the charges on...

Why we take the Carnot engine as standard? I can do the same proof with any other engine.

The question is that I can claim that any engine can't have an engine with greater efficiency than engine X (differ from a Carnot engine) without breaking the 2nd law. How can "couple another engine to it " be a proof?

Misspelling :"But I can 'prove' that any engine has the highest efficiency through this method."

I can't realize the proving why Carnot engine has the highest efficiency. "Let εc be the efficiency of a Carnot engine operating between two given temperatures.If an engine X, which has an efficiency εx that is greater than εc.We can couple engine X to a Carnot refrigerator , and they make a...

Do I have to do ∫F⋅dr , where r=(1,3)/√10 ?

Homework Statement A force F=(xy)i+(2*y^2)j，an object (mass=m) is move from (0,0) to (1,3) along y=3x , how much work does F do? Is F a conservative force? Homework Equations 3. The Attempt at a Solution [/B] Can I do it on the two axes?I mean ∫Fdx+∫Fdy , and because the work differ from the...

Can anyone do it mathematically?

What do you mean for "imaginary part of n is responsible for absorption and reflection of EM waves" ? My native language isn't English too.

Consider a line charge with charge density λ and a electric charge q. A coordinate system moving at velocity v ,it will see the line charge as a current ,and the electric charge(which is also moving seen from the moving coordinate system) will feels magnetic force. Why does this happens?

Spread your functions into logT=b*logL+log2π-b*loga. Compare to the regression line y=m*x+n from your experiment ,where b is the slope and log2π-b*loga is the intercept.