In the london equation, it is postulated that the current density inside a superconductor is proportional to the vector potential, i. e., j =-aa. (a) from the london equation and the maxwell equations, derive the meissner effect. in other words, prove that the magnetic field inside a bulk superconductor is 0 when there is an applied static magnetic outside. [10] (b) now consider a superconducting plate. an external magnetic field b is applied parallel to the plate. derive the expression for b(x) inside the superconducting plate, if the plate is placed perpendicular to the x-axis.

Which would not reduce the amount of green house gasses in the air

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

Urgent pls a. coal consumption levels off and remains flat. b. petroleum, natural gas, and renewables show an increase in consumption c. more nonrenewable resources continued to be consumed than renewable. d. there is little projected increase in nuclear energy use. e. carbon dioxide emissions are projected to decline as we approach 2040. global energy consumption is defined as the total energy used by an individual or organizations from around the world. use the graph above to analyze the projected energy consumption from now until 2040. which statements in the prompt apply? a) a, b, d b) b, c, d c) a, c, d d) a, b, c, d