A car converts the chemical energy of gasoline to the mechanical energy of motion. The total energy of motion is less than the total energy stored in the gasoline. Evidence that energy is still conserved, however, is found in which of the following observations? A. The mass of the moving object, the car, is greater than that of the gasoline.
B. The energy in the gasoline was extracted from crude oil, which had more energy.
C. Some of the energy of the gasoline is also converted to heat and sound energy.
D. Not all car engines are equally efficient at this energy transformation.

In a speech before the american society of newspaper editors (april 16, 1953), president eisenhower stated: "every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and not clothed. this world in arms is not spending money alone. it is spending the sweat of its laborers, the genius of its scientists, the hopes of its children. this is not a way of life at all in any true sense. under the cloud of threatening war, it is humanity hanging from a cross of iron." do you agree or disagree?