What occurs along a convergent plate?
a. hot spots and ridges
b. volcanoes and ridges
c. earthquakes and volcanoes
d. earthquakes and hot spots

Photons with the highest energy have the longest period

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

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.