6 Solar flares can produce noisy and unclear sound from a radio. Is that because sound
travels from the sun to Earth?
F Yes, but the sun is so far away that the
sound takes years to get to Earth.
G No, Earth is too far from the sun to
receive mechanical waves.
H No, mechanical waves have frequencies
that are much too low to get through
Earth's atmosphere.
I No, there are millions of kilometers
of space between Earth and the sun,
and mechanical waves cannot travel
through space.

Mankiw attributes – chapter 1 and his 10 principles – differences in living standards within a countryover time and across countries at a moment in time to: a. the presence or absence of inflation and unemployment.b. the allocation of resources between private markets and the public sector.c. those that have dealt successfully with the efficiency v. equality tradeoff and those that haven’t.d. differences in productivity.e. ones that think at the margin and respond to incentives and those that don’t.

Norman jones, an economic historian at the university of utah, has described the views of the ancient greek philosopher aristotle on interest: aristotle defined money as a good that was consumed by use. unlike houses and fields, which are not destroyed by use, money must be spent to be used. there- fore, as we cannot rent food, so we cannot rent money. moreover, money does not reproduce. a house or a flock can produce new value by use, so it is not unreasonable to ask for a return on their use. money, being barren, should not, therefore, be expected to produce excess value. thus, interest is unnatural. what did aristotle mean in arguing that money is “barren”? why would money being barren mean that lenders should not charge interest on loans? do you agree with aristotle’s reasoning? briefly explain.

Famous greek philosophers include all of the following, except