Answer:
Sometimes an entire ocean closes as tectonic plates converge, causing blocks of thick continental crust to collide. A collisional mountain range forms as the crust is compressed, crumpled, and thickened even more. The effect is like a swimmer putting a beach ball under his or her belly—the swimmer will rise up considerably out of the water. The highest mountains on Earth today, the Himalayas, are so high because the full thickness of the Indian subcontinent is shoving beneath Asia.
The Appalachian Mountains formed during a collision of continents 500 to 300 million years ago. In their prime they probably had peaks as high as those in the modern zone of continental collision stretching from the Himalayas in Asia to the Alps in Europe. But over the past 300 million years, the Appalachians have eroded to more modest heights.
Explanation:
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Answer:
<h2>D. Joan of Arc</h2>
Explanation:
Joan of Arc was a French peasant who claimed she'd had visions of saints and an angel that told her to help restore France from domination by the English.
Joan of Arc came to the scene at a critical time in 1429. The northern half of France was essentially under the control of the English. There was contention over who was truly the French king after Charles VI had died in 1422. His son, the prince Charles, was a claimant to the throne. But the English contended their boy king, Henry VI, should rule over France.
In January 1429, Joan (age 17) came to the court of the prince, Charles, and convinced him of her mission from God. Within a few months, she had rallied the people of France and helped to break the control of the English over large sections of French territory. She ultimately was captured by a group of French nobles who were allied with the English, was handed over to the English, and was burned at the stake (in 1431). But she had done much to unite the French people around a sense of common patriotism and national aspirations.
Answer: Latin America, you can guess Colombia, Venezuela, partially Mexico (but not so montanious)
Explanation:
Answer: composition in weight percent = 41.25% Cu and 58.75% Zn
Composition in Atom percent = 40.54% Cu and 59.46% Zn
Explanation:
Starting with the composition in weight percent.
Let Mcu= mass of cu and Mzn= mass of zn
%W= weight percent
%Wcu = (Mcu/(Mcu + Mzn)) × 100%
By substituting the values
%Wcu = (33/(33+47)) × 100%
%Wcu = (33/80) × 100%
%Wcu = 41.25%
%Wzn = (Mzn/(Mcu + Mzn)) × 100%
= 47/80 × 100%
%Wzn = 58.75%
Then we can proceed to composition in atom percent
Atomic mass of Cu= Ac = 63.5g/mol
For zn = Az = 65.4g/mol
Atom percent cu = {(%Wcu×Ac)/[(%Wcu×Ac)+(%Wzn×Az)]} × 100%
Substituting the values
= {2619.375/6461.625}×100%
=40.54% Cu
Atom percent zn = {(%Wzn×Az)/[(%Wcu×Ac)+(%Wzn×Az)]} × 100%
={3842.25/6461.625}×100%
=59.46% Zn
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