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FrozenT [24]
3 years ago
8

The student concluded that the current in the LDR is inversely proportional to the potential difference across the LDR. Explain

why the student's conclusion is incorrect.

Physics
1 answer:
Katena32 [7]3 years ago
5 0

The given question is incomplete as the essential graphical result is missing, however the correct graph is attached with the answer :

Answer:

The correct answer is - According to the graph,  the current in the LDR is directly proportional to the potential difference across the LDR.

Explanation:

Two variables that are in directly proportion will consistently deliver a straight-line graph that goes through the beginning. On the off chance that the steady of proportionality is sure, the chart will have a positive slope. On the off chance that the steady is negative, the graph will have a negative angle.

In the given data and graph of the result collected by the student shows a straight line in between the current in the LDR and the potential difference across the LDR. It means they are in relation of directly proportional.

Thus, the correct answer is - According to the graph,  the current in the LDR is directly proportional to the potential difference across the LDR.

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Which is the correctly balanced equation for the reaction of rust, Fe2O3, and hydrochloric acid, HCl?
Mariana [72]

Answer: Option (c) is correct answer.

Explanation:

The given reaction equation is as follows.

          Fe_{2}O_{3} + HCl \rightarrow FeCl_{3} + H_{2}O

The number of atoms on reactant side are as follows.

  • Fe = 2
  • O = 3
  • H = 1
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The number of atoms on product side are as follows.

  • Fe = 1
  • O = 1
  • H = 2
  • Cl = 3

Therefore, in order to balance the equation we will balance the number of atoms in both reactant and product side.

Since number of Fe atoms in reactant side is 2, therefore, multiply FeCl_{3} by 2 in the product side.

Number of O atoms in reactant side is 3, therefore, multiply H_{2}O by 3 in the product side.

Now, the number of H atoms on product side is 6, therefore, multiply HCl by 6 in the reactant side.

The number of chlorine atoms on both reactant and product side equals 6.

Thus, the equation will become as follows.

             Fe_{2}O_{3} + 6HCl \rightarrow 2FeCl_{3} + 3H_{2}O

Hence, the equation is balanced.

5 0
4 years ago
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Explanation:

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Because of friction , NOT all potential energy is converted to kinetic energy. (B)

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