What property of a wave changes to create the Doppler effect?

speed

amplitude

medium

frequency

Where was ashoka's rock and pillar edicts located?

Who was the first explorer to Paraguay?

What was the significance of the Fourteenth Amendment? It gave all men the right to vote. It solved disagreements in the South. It granted civil rights to African Americans. It brought many Confederate states back into the Union.

why was the development of an alphabet an important advancement for the phonician civilization? check all that apply

Which person would most likely make this statement? The president must consider the possibiltity of developing the atomic bomb. I believe it will be done and I think we must do it before the Germans do.

How did John Brown contribute to the abolitionist movement?

Which is a reason why the two major political parties do not have a strong central organizing structure?

In 1920, women achieved the political right to vote, and yet the struggle for economic rights continued due to which of the following?

Why does the United States have only two major parties? the Constitution prohibits minor parties the first-past-the-post electoral system state laws forbid minor parties two parties represent all the choices voters need

What inspired europeans to explore the west coast of africa? how did this infuence the developement of the slave trade?