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igomit [66]
3 years ago
6

Jose and Gina are studying balanced and unbalanced forces and are challenged to test their theories. Predict the result when Jos

e applies 6 Newtons of forces to one side of a box and Gina applies 6 Newtons of force to the other side of the box.
A)
The box does not move.


B)
The box moves toward Gina.


C)
The box moves toward Jose.


D)
The force crumples the box.

Chemistry
2 answers:
lilavasa [31]3 years ago
6 0

Answer : The correct option is, (A) The box does not move.

Explanation :

Force : It is defined as the force can be a push or a pull.

Balanced force : When the two forces are equal in magnitude and in opposite direction. These forces are balance to each other. In this force, the object does not move.

Unbalanced force : When the two forces are not equal in magnitude and direction. These forces does not balance to each other. In this force, the object will move on that side where the force will be applied more.

There are three cases :

Case 1 : F_L=F_R

That means, when the force applied from left side are equal to the force applied from the right side then they balance to each other and object will not move.

Case 2 : F_L>F_R

That means, when the force applied from left side are more than the force applied from the right side then the object will move towards right side.

Case 3 : F_L

That means, when the force applied from left side are less than the force applied from the right side then the object will move towards left side.

According to question, the applied forces are equal in magnitude and in opposite direction. So, the box will not move.

Therefore, the correct answer is, A

sweet [91]3 years ago
3 0

Answer:

The answer is A.

Explanation:

The box does not move.

The forces are balanced so the box does not move.

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What is the empirical formula for a compound which contains 67.1 zinc and the rest is oxygen
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Answer:

The empirical formula is ZnO2

Explanation:

What is the empirical formula for a compound which contains 67.1% zinc and the rest is oxygen?

Step 1: Data given

Suppose the compound has a mass of 100.0 grams

A compound contains:

67.1 % Zinc  = 67.1 grams

100 - 67.1 = 32.9 % oxygen  = 32.9 grams

Molar mass of Zinc = 65.38 g/mol

Molar mass of O = 16 g/mol

Step 2: Calculate moles of Zinc

Suppose the compound is 100 grams

Moles Zn = 67. 10 grams / 65.38 g/mol

Moles Zn = 1.026 moles

Step 3: Calculate moles of O

Moles O = 32.90 grams / 16.00 g/mol

Moles O = 2.056 moles

Step 4: Calculate mol ratio

We divide by the smallest amount of moles

Zn: 1.026/1.026 = 1

O: 2.056/1.026 = 2

The empirical formula is ZnO2

To control this we can calculate the % Zinc for 1 mol

65.38 / (65.38+2*16) = 0.67.1 = 67.2 %

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