<h2>
Answer: B)Scientists’ understanding of cells continually improved as the results of studies built upon each other over time and formed the cell theory.</h2>
Explanation:
Nowadays we know <u>cells are essential microscopic units that make up the living beings, capable of reproducing independently. </u>
However, this is the result of a long process of discoveries and studies made since the 19th century, in which the continuous improvement of new technologies was helpful.
In fact, it is wel known the English scientist Robert Hooke was the first to discover the existence of cells by looking through a compound microscope at a cork sheet, realizing that it was made up of small polygonal holes (like those of a honeycomb) that reminded him of the chambers in which the monks stayed (called cells). Then, during the next centuries more studies were made until we had the current knowledge about the structure of a cell.
Answer;
Testable and falsifiable.
Explanation;
-The two traits that a hypothesis must have in order to be viable are; testable and falsifiable.
-A scientific hypothesis must be testable, which means that it should be possible to make observations that agree or disagree with it.
-Falsifiability of a hypothesis on the other hand, refers to the capacity for some proposition, statement, theory or hypothesis to be proven wrong. This is an essential component of the scientific method and the testing of a hypothesis.
Answer:
protons+neutrons= mass number, so if the mass number is 13 and protons are 6 its 13-6=7 neutrons
Explanation:
mass number: the sum of the number of protons and
neutrons in an atom
this is key as it explains that protons+neutrons= mass number, so if the mass number is 13 and protons are 6 its 13-6=7 neutrons
Answer:
1. He feels worse off.
2. His awareness of the grim situation.
Explanation:
Elie Weisel's memoir "Night" is about the persecution of the jews by the Germans during the worst genocide in world history. The events leading up to the Holocaust and the resulting after-effects through his personal experience provides one of the most prominent witness accounts of the crime.
When Weisel states that <em>"lying down wasn't an option</em>", he reveals how congested space was in the cabin. The <u>"lucky ones" were able to breathe in the fresh air from the window, while the rest have to be satisfied with wherever they are.
</u> This reveals his realization of the grim situation inside the over-packed cabin, where there is hardly any space to move.
And when he said that they <em>"never ate enough to satisfy our hunger"</em>, he presents the realization and understanding of the grim situation in the train's cabin where eating is not a luxury, but a necessity to stay alive. And for that, they know they have to <em>"economize, to save for tomorrow"</em> rather than just stay full once.
Answer :
0.5 Ω
Explanation:
The following data were obtained from the question:
Voltage (V) = 7.2 V
Current (I) = 14.4 A
Resistance (R) =..?
The resistance of the motor can be obtained by applying the ohm's law equation as shown below:
V = IR
7.2 = 14.4 × R
Divide both side by 14.4
R = 7.2/14.4
R = 0.5 Ω
Therefore, the resistance is 0.5 Ω