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Sliva [168]
3 years ago
7

Why do balloons rise into the and remain there?

History
2 answers:
miskamm [114]3 years ago
8 0

Answer: Hot air is less dense than cool air; the heated air causes the balloon to rise simply because it is lighter than an equal volume of cold air. Buoyancy is an upward force that the air exerts, and it helps hot-air balloons and blimps stay in the air. A hot air balloon uses a burner to heat up the air inside the balloon.

ANEK [815]3 years ago
5 0

Explanation:

Because gas inside the balloon is less denser than the air outside(eg. helium). Due to this, the balloon rises until the air outside the balloon is as dense as the air inside.

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Sheena presented her informative speech on the life of Marie Curie. She covered Curie's early life and marriage, her scientific
Andrej [43]

Answer: build in redundancy

Explanation:

When presenting an informative speach there´re four strategies suitable to enhance audience recall of information:

1. Making essential ideas short and easy.

2. Pacing the information flow.

3. Building in redundancy, and

4. Reinforce key ideas.

Building in redundancy refers to repeating important terms and ideas numerous times, only developing it differently each time. Repeating and redefining the main parts of an informative speech allows reinforcing the main points in the audience´s mind.

5 0
3 years ago
What are two Islamic achievements that changed the world? (No Links)
kolbaska11 [484]

Answer:

1. Surgery

Around the year 1,000, the celebrated doctor Al Zahrawi published a 1,500 page illustrated encyclopedia of surgery that was used in Europe as a medical reference for the next 500 years. Among his many inventions, Zahrawi discovered the use of dissolving cat gut to stitch wounds -- beforehand a second surgery had to be performed to remove sutures. He also reportedly performed the first caesarean operation and created the first pair of forceps.

2. Coffee

Now the Western world's drink du jour, coffee was first brewed in Yemen around the 9th century. In its earliest days, coffee helped Sufis stay up during late nights of devotion. Later brought to Cairo by a group of students, the coffee buzz soon caught on around the empire. By the 13th century it reached Turkey, but not until the 16th century did the beans start boiling in Europe, brought to Italy by a Venetian trader.

Explanation:

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8 0
3 years ago
Which important goals did Terence Powderly have for the Knights of Labor?
Sauron [17]
An eight hour day, an end to child labor and work
3 0
2 years ago
Why did Truman want to stop MacArthur from going into North Korea
Alex

On 11 April 1951, U.S. President Harry S. Truman relieved General of the Army Douglas MacArthur of his commands after MacArthur made public statements which contradicted the administration's policies. MacArthur was a popular hero of World War II who was then the commander of United Nations forces fighting in the Korean War, and his relief remains a controversial topic in the field of civil-military relations.

MacArthur led the Allied forces in the Southwest Pacific during World War II, and after the war was in charge of the occupation of Japan. When North Korea invaded South Korea in June 1950, starting the Korean War, he was designated commander of the United Nations forces defending South Korea. He conceived and executed the amphibious assault at Inchon on 15 September 1950, for which he was hailed as a military genius. However, when he followed up his victory with a full-scale invasion of North Korea on Truman's orders, China intervened in the war and inflicted a series of defeats, compelling him to withdraw from North Korea. By April 1951, the military situation had stabilized, but MacArthur's public statements became increasingly irritating to Truman, and he relieved MacArthur of his commands. The Senate Armed Services Committee and the Senate Foreign Relations Committee held a joint inquiry into the military situation and the circumstances surrounding MacArthur's relief, and concluded that "the removal of General MacArthur was within the constitutional powers of the President but the circumstances were a shock to national pride."[1]

An apolitical military was an American tradition, but one that was difficult to uphold in an era when American forces were employed overseas in large numbers. The principle of civilian control of the military was also ingrained, but the rising complexity of military technology led to the creation of a professional military. This made civilian control increasingly problematic when coupled with the constitutional division of powers between the President as commander-in-chief, and the Congress with its power to raise armies, maintain a navy, and wage wars. In relieving MacArthur for failing to "respect the authority of the President" by privately communicating with Congress, Truman upheld the President's role as pre-eminent.

3 0
3 years ago
PLEASE HURRY! IM BEING TIMED
erastovalidia [21]

Answer:

They believed that God had chosen them

4 0
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