Acarnot heat engine receives heat from a heat source at 1200°c and has a thermal efficiency of 40 percent. the heat engine does maximum work equal to 490 kj. determine the heat supplied to the heat engine by the heat source, the heat rejected to the heat sink, and the temperature of the heat sink. (round the final answers to the nearest whole number.)

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Which lists the organs in the correct order as food passes from the mouth to anus?