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

Which of the following selections is least useful for supporting the claim that states intentionally built unequal school systems? question 1 options: the supreme court ruling in plessy v. ferguson (1896) wrote into law that america had two separate societies: one black and one white. it was very clear by the mid-1900s that southern states had expertly built separate educational systems. these schools, however, were never equal. states with laws keeping schools segregated never gave equal amounts of money to their black and white schools. ten years after brown, fewer than 10 percent of southern public schools had integrated. some areas did not comply at all.

How can christianity affect the cultural landscape of a place?

According to the article 13 of the articles of confederation,what percentage of votes by the states was required to ratify any amendments