The doppler effect is the change in observed frequency due to
a. the original frequency of the source.
b. the type of medium the wave is in.
c. the motion of the source or observer.
d. the type of wave.
e. all of the above

Five methods of nomination used today include: select all that apply convention caucus direct primary inheritance promotion petition announcement

Which is the best conclusion that can be drawn regarding the status of african-americans in the south in the late 1800s? a) african-americans made tremendous political, social, and economic advancements during the reconstruction era. b) passage of the 13th, 14th, and 15th amendments to the u. s. constitution guaranteed equal status and rights for all african-americans. c) the reconstruction policies enacted by the federal government were highly effective in african-american citizens transition to life after slavery. d) although african-americans had equal rights under federal law they were still economically, politically, and socially inferior to whites in the south during the reconstruction era.

Which of these best describes why georgia was important to united states during world war i? a)georgia made money by selling cotton and wood to europe. b)more soldiers came from georgia than from any other state. c)many white planters volunteered to serve in the war effort. d)the state had many federal installations and training camps