suppose that when you move the north pole of a bar magnetic toward a coil it induces a positive current in the coil. the strength of the field produced by an electromagnetic can be controlled electronically. suppose you place a coil near the north pole of an electromagnet and increase the field while keeping everything stationary. which one of the following will happen?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to