[Answer] 10. The first nuclear powered submarine was named what?

Step 1 : Introduction to the question "10. The first nuclear powered submarine was named what?"

...1. Argo 2. Porpoise 3. Albacore 4. Nautilus She sailed in 1955.

[Answer] 4. Science and Technology: In a nuclear reaction mass is lost and energy appears. The equation E = MC^2 (E equals M times C squared) gives the relationship between the mass lost and the energy created. Who proposed this formula?

Step 1 : Introduction to the question "4. Science and Technology: In a nuclear reaction mass is lost and energy appears. The equation E = MC^2 (E equals M times C squared) gives the relationship between the mass lost and the energy created. Who proposed this formula?"

...1. Isaac Newton 2. Albert Einstein 3. Aristotle 4. Galileo This is possibly one of the most famous formulas in history and is frequently referenced in pop culture. Strictly, Einstein's equation states that mass and energy are two forms of the same thing, so technically mass is converted to another form rather than lost. E stands for energy, M for mass and C for the speed of light in a vacuum.

[Answer] Where is the Chernobyl nuclear disaster site?

Step 1 : Introduction to the question "Where is the Chernobyl nuclear disaster site? "

...1. Belarus 2. Russia 3. Ukraine 4. Poland

[Answer] In what year did Iran and several other countries, led by the U.S., reach a controversial nuclear agreement that the U.S. fully exited this week by reinstating sanctions on Iran?

Step 1 : Introduction to the question "In what year did Iran and several other countries, led by the U.S., reach a controversial nuclear agreement that the U.S. fully exited this week by reinstating sanctions on Iran?"

...The Joint Comprehensive Plan of Action, known commonly as the Iran nuclear deal or Iran deal, is an agreement on the nuclear program of Iran reached in Vienna on 14 July 2015 between Iran, the P5+1, and the European Union.

[Ans] which countries have nuclear weapons

Step 1 : Introduction to the question "which countries have nuclear weapons "

There are nine sovereign states that have successfully detonated nuclear weapons. Five are considered to be "nuclear-weapon states" (NWS) under the terms of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT).