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Image (a) shows a 1780 British map of Charleston with details of the locations of Continental forces. A portrait of General Nathanael Greene is shown in image (b).
This 1780 map of Charleston (a), which shows details of the Continental defenses, was probably drawn by British engineers in anticipation of the attack on the city. The Siege of Charleston was one of a series of defeats for the Continental forces in the South, which led the Continental Congress to place General Nathanael Greene (b), shown here in a 1783 portrait by Charles Wilson Peale, in command in late 1780. Greene led his troops to two crucial victories.

The disaster at Charleston led the Continental Congress to change leadership by placing General Horatio Gates in charge of American forces in the South. However, General Gates fared no better than General Lincoln; at the Battle of Camden, South Carolina, in August 1780, Cornwallis forced General Gates to retreat into North Carolina. Camden was one of the worst disasters suffered by American armies during the entire Revolutionary War. Congress again changed military leadership, this time by placing General Nathanael Greene ( [link] ) in command in December 1780.

As the British had hoped, large numbers of Loyalists helped ensure the success of the southern strategy, and thousands of slaves seeking freedom arrived to aid Cornwallis’s army. However, the war turned in the Americans’ favor in 1781. General Greene realized that to defeat Cornwallis, he did not have to win a single battle. So long as he remained in the field, he could continue to destroy isolated British forces. Greene therefore made a strategic decision to divide his own troops to wage war—and the strategy worked. American forces under General Daniel Morgan decisively beat the British at the Battle of Cowpens in South Carolina. General Cornwallis now abandoned his strategy of defeating the backcountry rebels in South Carolina. Determined to destroy Greene’s army, he gave chase as Greene strategically retreated north into North Carolina. At the Battle of Guilford Courthouse in March 1781, the British prevailed on the battlefield but suffered extensive losses, an outcome that paralleled the Battle of Bunker Hill nearly six years earlier in June 1775.

Yorktown

In the summer of 1781, Cornwallis moved his army to Yorktown    , Virginia. He expected the Royal Navy to transport his army to New York, where he thought he would join General Sir Henry Clinton. Yorktown was a tobacco port on a peninsula, and Cornwallis believed the British navy would be able to keep the coast clear of rebel ships. Sensing an opportunity, a combined French and American force of sixteen thousand men swarmed the peninsula in September 1781. Washington raced south with his forces, now a disciplined army, as did the Marquis de Lafayette and the Comte de Rochambeau with their French troops. The French Admiral de Grasse sailed his naval force into Chesapeake Bay, preventing Lord Cornwallis from taking a seaward escape route.

In October 1781, the American forces began the battle for Yorktown, and after a siege that lasted eight days, Lord Cornwallis capitulated on October 19 ( [link] ). Tradition says that during the surrender of his troops, the British band played “The World Turned Upside Down,” a song that befitted the Empire’s unexpected reversal of fortune.

Questions & Answers

A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
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A mouse of mass 200 g falls 100 m down a vertical mine shaft and lands at the bottom with a speed of 8.0 m/s. During its fall, how much work is done on the mouse by air resistance
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2. A sled plus passenger with total mass 50 kg is pulled 20 m across the snow (0.20) at constant velocity by a force directed 25° above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work.
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you have been hired as an espert witness in a court case involving an automobile accident. the accident involved car A of mass 1500kg which crashed into stationary car B of mass 1100kg. the driver of car A applied his brakes 15 m before he skidded and crashed into car B. after the collision, car A s
Samuel Reply
can someone explain to me, an ignorant high school student, why the trend of the graph doesn't follow the fact that the higher frequency a sound wave is, the more power it is, hence, making me think the phons output would follow this general trend?
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Nevermind i just realied that the graph is the phons output for a person with normal hearing and not just the phons output of the sound waves power, I should read the entire thing next time
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Follow up question, does anyone know where I can find a graph that accuretly depicts the actual relative "power" output of sound over its frequency instead of just humans hearing
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A string is 3.00 m long with a mass of 5.00 g. The string is held taut with a tension of 500.00 N applied to the string. A pulse is sent down the string. How long does it take the pulse to travel the 3.00 m of the string?
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Source:  OpenStax, U.s. history. OpenStax CNX. Jan 12, 2015 Download for free at http://legacy.cnx.org/content/col11740/1.3
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