an iron ring is magnetized by placing it near the north pole of a bar magnet. how would the magnetic field lines of the iron ring appear once it is magnetized?

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.

Which is a substance that can be separated by physical means and is not the same throughout