<span>a solution is a liquid mixture </span>
1. Physical Property
2. Chemical Change
3. Chemical Change
4. Chemical Property
5. Physical Property
6. Physical Change
7. Chemical Change
8. Physical Change
9. Chemical Change
10. Physical Property
11. Physical Property
12. Chemical Change
13. Chemical Change
14. Chemical Property
15. Chemical Change
Explanation:
Physical Property: A property of matter that can be seen, felt, tasted, smelled, or heard.
Physical Change: The change of an object of matter's physical property/properties.
Chemical Property: An element/object of matter's internal property/properties
Chemical Change: An element/object of matter's internal property/properties being altered or changed
<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:
Approximately 
.
Explanation:
The net force on the girl would be:
.
Under the assumptions, the net force on this girl would be equal to the tension force in the rope. All other forces on the girl would be balanced.
In other words, the tension force that the rope exerted on the girl would be 
. The girl would exert a reaction force on the rope at the same magnitude (
) in the opposite direction. This force would translate to a 
force on the boy towards the girl.
Under similar assumptions, the net force on the boy would also be . Since the mass of the boy is 
, the acceleration of the boy would be:
.
32.6% of 1.4 Mw
= (0.326) x (1,400,000 joules/second)
= 456,400 joules/second .
1 year
= (365 da) x (86,400 sec/da) = 31,536,000 seconds
(456,000 joules/sec) x (31,536,000 sec) = 1.438 x 10¹³ Joules
(That's 1.438 x 10⁷ Megajoules, or 3,994,560 kWh)
