[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.

[Ans] What Russian video game features geometric squared blocks that fall from the sky?

Step 1 : Introduction to the question "What Russian video game features geometric squared blocks that fall from the sky?"

Tetris is a tile-matching puzzle video game, originally designed and programmed by Russian game designer Alexey Pajitnov. He derived its name from the Greek numerical prefix tetra- (all of the game's pieces contain four segments) and tennis, Pajitnov's favorite sport. The objective of the game is to manipulate the geometric shaped square blocks called Tetrimonos, with the aim of creating a horizontal line of ten units without gaps. The game, or one of its many variants, is available for nearly every video game console and computer operating system. In 2007, Tetris came in second place in IGN's "100 Greatest Video Games of All Time".