Answer:
They developed a test for poisons in the human tissues
Explanation:
Around the 19th century, Mathieu Orfila and Robert Christison developed important tests that identified poisons in human tissues.
By so doing, they laid the foundation for what is now called forensic toxicology. This science attempts to identify poisons in human tissues especially by way of autopsies and forensic investigation.
Today forensic toxicology has expanded to include alcohol testing techniques as well as testing athletes for intake of performance enhancing substances.
Answer;
1. strong nuclear force
2. electromagnetic force/ electric force
Explanation;
The more protons an element has, the harder it is to bring nuclei together. It takes more energy to trigger fusion in iron and other heavy elements. Lighter elements, such as helium and hydrogen, require less energy to bring about fusion. The sun, for instance, spends most of its life converting hydrogen into helium.
-The strong nuclear force depends on; a more massive the object is the more attractive the force produced and also as distance between objects increases, attractive force decreases at a faster rate.
Answer:
<em>Option D: It iwill actually warm the room</em>
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Explanation:
<u>To complete your given question the available options are:</u>
A. It will cool the room very effectively
B. It will cool the room, but inefficiently
C. It will not change anything
D. It will actually warm the room.
This is a fun and somewhat tricky case. So, let us first understand a few principles in order to answer our question. To begin with<u><em>, the basic operating principle of the fridge is to take the hot air from the surrounding environment and cool it to the desired temperature in order to sustain all products inside the fridge</em></u>. It can also be thought as 'transferring' heat from the interior (i.e. inside the fridge) to the exterior (i.e. outside the fridge and into the surrounding).<em> In fact if you check the back of a fridge during operation, you will noticed a much higher temperature in that area. Which is due to the heat removed by the 'fridge operation system' in order to cool that interior air.</em> Therefore, this heat must transfer somewhere else, which typically ends up on the little fan located on the back of the fridge. We can also think of it in terms of the 2nd Law of Thermodynamics, which essentially tells us that the system (in this case the fridge and its surrounding)<em> MUST reach an Equillibrium.</em>
Therefore, when you do open the door of the fridge, you might initially (and for an instant almost) feel this 'cool' air coming out; thinking the surrounding air should soon cool down as well. But, due to our discussion above along with the principles of the 2nd Law of Thermodynamics, and considering the fridge operation over time,<em><u> the more cool air the fridge looses, the more the fridge system works to cool the air, thus the more the fans of the fridge work, which results to increasing heat getting 'dumped' by the fridge system and thus to the surrounding. </u></em>
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<em>Consequently when you open the fridge door you will actually warm the room. (i.e. Option D). </em>
Answer: a= 50 m/s²
Explanation: Acceleration is force per unit mass.
a= F/ m
= 10 N / 0.2 kg
= 50 m/s²