Ernest Rutherford contributed to the atomic theory by discovering that the atom is mostly empty space.

He can to that conclusion because he fired alpha particles at gold foil, which was so thin that it was only around .00004 cm thick, and while almost all shot straight through, some actually bounced back!

He likened it to shooting a 15-inch round(bullet) at tissue paper, only to have it bounce right back at you! Based on this, he theorized that the atom is mostly empty, which is why a majority of the particles passed right through, but in the very center of the atom there is a super-dense structure called a nucleus that held a majority of the atom's mass. This super-dense mass would be more than massive enough to deflect the particle, should they collide.

4 0

3 years ago

How did the united states government view the rwanda crisis while it was happening?

meriva

The U.S. government viewed it was necessary to stop the war, hen,ce pledged to work with the UN to set up a war crimes tribunal and human rights monitoring.

<h3>What was the Rwanda crisis?</h3>

It was popularly known as the Rwandan genocide that occured against the Tutsi in Rwanda in 7 April and 15 July 1994 during the Rwandan Civil War.

Around this time, members of the Tutsi minority ethnic group and some moderate Hutu and Twa were killed by armed militias.

The main cause of the genocide was the death of the Rwandan President Juvenal Habyarimana that occured when his plane was shot down above Kigali airport on 6 April 1994.

Read more about Rwandan genocide

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5 0

2 years ago

How did U.S. policies abandon neutrality during the early years of WWII (World War 2).

Snowcat [4.5K]

Answer:

The Neutrality Act of 1935 prohibited exporting arms and ammunition to any foreign nation at war. ... In November 1939, two months after the beginning of World War II, Congress passed the Neutrality Act of 1939, which lifted the 1935 arms embargo and placed all sales to belligerent nations on a “cash and carry” basis.

Explanation:

<h2>please mark it as brilliant answer</h2>

5 0

3 years ago