What happens when plates diverge? As plates diverge the boundaries of the plates begin to sink into the mantle.

Hot spots form under land masses producing volcanos and lava flows creating island chains.

Plates separate and magma from the mantle fills the space and solidifies.

As plates diverge they move laterally past each other creating seismic disturbances.

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.