An object moves along a straight line path from P to Q under the action of a force (4 3 3 ) N. I j k − + If the coordinates of P
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<h2>Answer</h2>
The <u>electron affinity in chemical reaction</u> decides the formation of breakdown of substance
<h2>Explanation</h2>Within the chemical reactions, different reactants are come together to make the new compound to complete up to the reaction. The reaction is based on the stability of reactants and the electron affinity of these reactants. The oxidation and reduction process within the reaction is also the main reason to combine or break the substance. For example
The hydron has the ability to lose electron and fluorine has the ability to gain an electron. The strong or weak electron affinity of this element makes the new compound HF.
The period of a simple pendulum is given by
where
L is the pendulum length
g is the acceleration of gravity
If we move the same pendulum from Earth to the Moon, its length L remains the same, while the acceleration of gravity g changes. So we can write the period of the pendulum on Earth as:
where
is the acceleration of gravity on Earth, while the period of the pendulum on the Moon is
where
is the acceleration of gravity on the Moon.
If we do the ratio of the two periods, we get
but the gravity acceleration on the Moon is 1/6 of the gravity acceleration on Earth, so we can write
and we can rewrite the previous ratio as
so the period of the pendulum on the Moon is
where
L is the pendulum length
g is the acceleration of gravity
If we move the same pendulum from Earth to the Moon, its length L remains the same, while the acceleration of gravity g changes. So we can write the period of the pendulum on Earth as:
where
where
If we do the ratio of the two periods, we get
but the gravity acceleration on the Moon is 1/6 of the gravity acceleration on Earth, so we can write
so the period of the pendulum on the Moon is
The scientific method consists of making an observation, ask a question, formulate hypothesis, predict, test, iterate
The scientific question that can be asked is; <u>What is the </u><u>depth of the well</u>
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The reason why the above question is appropriate is as follows:
The items Jack and Jill found at the well
- No pail
- A stopwatch
- Nine equal sized rocks
The information they can get using what they found are;
The time it takes the rock to reach the water surface in the well
The depth of the well
The well's depth, <em>h</em>, is given using the equation of free fall, as follows;
Where;
g ≈ Acceleration due to gravity ≈ 9.81 m/s²
By recording the time each rock takes to reach the water surface in the well, the average depth of the well, , can be found by finding the average of the 9 calculated values for <em>h</em> using the 9 stones
Therefore;
The scientific question that is specific and testable is <u>how </u><u>deep </u><u>is the </u><u>well</u><u>, or what is the well's depth</u>
Learn more about scientific method here: