Ernest Rutherford was the first scientist to describe an atomic model in which most of the atom is empty space. His model proposed that atoms have a dense positive nucleus surrounded by orbiting electrons in empty space.
The first person to state that matter is made up of atoms was the ancient Greek philosopher Democritus in the 5th century BC. He proposed that all matter is composed of indivisible particles called atoms.
false
The idea that the world is made up of atoms was proposed by the ancient Greek philosopher, Democritus, around 400 BC. He suggested that all matter is composed of tiny, indivisible particles called atoms that are constantly in motion. This atomic theory laid the foundation for modern chemistry.
Yes, blood can be either B positive or B negative, depending on the presence or absence of the B antigen on the surface of red blood cells. B positive blood has the B antigen and the Rh factor present, while B negative blood has the B antigen but lacks the Rh factor.
Connect positive first and negative last.Connect positive first and negative last.
Hook up the positive first then the negative.
negative ( on all vehicles ) When putting on positive goes on first and negative last.
Connect the positive + cable first and negative - last. When disconnecting them disconnect the negative - first and positive + last.
Positive goes on first.
Positive, because the negative terminal is usually used as the ground plane.
The negative cable is removed first, then the positive. To re-connect, the positive goes first, then the negative.
When you divide or multiply positive and negative numbers, you first do the division or multiplication as normal. The next step is to assess whether or not the answer will be negative or positive. If the two numbers of the question were the same (negative and negative or positive and positive) then the answer will be positive. If the two numbers in the question were different (one negative and one positive) then the answer will be negative. Thus, if you divide a negative number by a positive number, the result will be the same as normal division, but the answer will be negative.
The coordinates must be as follows: First quadrant: positive, positive Second quadrant: negative, positive Third quadrant: negative, negative Fourth quadrant: positive, negative
first, you square negative 4. Since negative times negative is positive, then you get positive sixteen., Then positive 16 times two is 32
27
You need to disconnect the negative FIRST. For most applications, you only need to disconnect the negative. Always disconnect the negative first, always reconnect the positive first.