The mass of the aluminum added is calculated through the principle of conservation of energy, specifically thermal energy. By considering the heat lost by the aluminum and gained by the water, we can rearrange the equation for heat transfer and find that the mass of the aluminum is approximately 37.9 grams.
In this physics question, we're looking at a thermodynamic process involving a chunk of aluminum and water. Given the known values of their respective specific heats, the mass of water, and their final equilibrium temperature, we're aiming to find the mass of the aluminum.
We begin by understanding that in a closed system, the heat gained by one body is equal to the heat lost by another. In this case, the aluminum is losing heat, and the water is gaining it. The equation for heat transfer (Q = mcΔT), where m is mass, c is specific heat, and ΔT is change in temperature.
The heat gained by the water = mass of water * specific heat of water * change of temperature in water = 200g * 4.18J/g°C * (18.9°C - 15.5°C) = 2836.4J.
This is equal to the heat lost by the aluminum. Solving the analogous heat equation for the mass of the aluminum gives us the answer:
m = Q / (c * ΔT) = 2836.4J / (0.897J/g°C * (91.4°C - 18.9°C)) = 37.9g
So the mass of the aluminum is approximately 37.9 grams.
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Planets in our solar system do not revolve around the sun in perfect circles. They revolve in the elliptical orbits.
The solar system consists of the planet's satellites, as well as numerous comets, asteroids, and meteoroids, as well as the interplanetary medium.
Planets in our solar system do not revolve around the sun in perfect circles. They revolve in the elliptical orbits.
Hence, option D is correct.
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Answer:
It is most likely the word elliptical.
Explanation:
Usually the term elliptical refers to the oval-like shape of a substance or path of an object. The question states, "Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals." Because the planets orbit around the sun in an oval-like path, those orbits can be described as elliptical. Scientists also normally use this word to describe the same thing; Therefore, your answer is elliptical.
Answer:
If two objects are dropped at the same height, the heavier object will hit the ground first.
Explanation:
A proper hypothesis has the form:
"If ... , then ... ".
Now, why the other sentence aren't hypothesis?
This sentence its an OPINION. It may be true that, for the speaker/writer, orange popsicles taste sweeter, but this is an subjective opinion, and difficult to test.
This sentence its an STATEMENT. If we wish to make an proper hypothesis, it should take the form:
If children wear backpacks, then they do better academically.
This sentence its another OPINION. This opinion COULD be tested, but the proper way of write it as an hypothesis would be:
If someone listed to loud music only three hours a day, then there shoul be no effect on his/her hearing.
Answer:
Answer is:If two objects are dropped at the same height, the heavier object will hit the ground first.
Explanation:
Chemistry is a field of science deals with chemicals, reactions, and their structure. Chemistry is the discipline in which geology, material, and nutrition are studied.
The field of science deals with the substances of matter its composition and the checking of their reactions and property of a chemical reaction.
The field of science interact with the physical structure of the earth, and history of the earth's surface, and the processes already done.
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