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.
The Strategic Arms Reduction Treaty (START) number one was designed to
reduce the number of nuclear weapons. It was signed July 31, 1991 and went into full force by 1994. Eventually it was to control and remove warheads and nuclear weapons. Start 1 achieved an 80% removal which was considered to be a success. Other treaties followed.
idrk how to answer this because your question was a bit mixed, but charles pinckney was a delegate to the 1787 philadelphia convention.
"pinckney's influence helped ensure that south carolina would ratify the united states"
Answer:
The answer is below
Explanation:
1. Henry Ford:- Assembly line, this was invented in 1913
2. Alexander Graham Bell:- Telephone, was invented in 1876
3. Samuel Morse:- Telegraph: this was invented in the 1830s
4. The Wright Brothers:- Airplane, this was invented in 1903 by Wilbur and Orville Wright is known as The Wright Brothers
5. Thomas Edison:- Electric lightbulb: this was invented in 1879
The three branches of government that still exist today are: Legislative, Executive and Judicial.
