1
which of the following provides an
owing provides an example of sound waves being reflected?
a.
faring music being played by a neighbor's stereo through a wall
b
water in a glass vibrating because of the sound of thunder
c
a noise that produces an echo when it bounces off a distant wall
d
the sound of a distant train getting louder as it approaches an observer

How does cultural diffusion affect civilization

The american public was excited by the invention of the railroad system. true false

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.