D.
Question 6
True or false: You can change the speed of a sound wave by increasing the wavelength.
False. You must decrease the wavelength in order to increase the speed of sound
True. If the wavelength is increased, then more waves pass per second and the speed of sound increas
False. Wave speed is determined by frequency, not wavelength.
False. The speed of sound can only be changed by changing the medium,

The president vetoes a bill proposed to become law by congress. in this situation, what happens to the bill?

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.

No renewable resources are natural resources that are limited in supply and cannot be replaced as quickly as they are used.(true or false asnwering) a.true b.false