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Lady_Fox [76]
3 years ago
12

A spring that has a spring constant of 1400 N/m is stretched to a length of 2.5 m. If the normal length of the spring is 1.0 m,

how much elastic potential energy is stored in the spring? 700 J 1050 J 1575 J 4375 J
Physics
1 answer:
Daniel [21]3 years ago
7 0
The answer is 1575, I just took the Review.<span />
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1. What coefficients would balance the following equation?
maksim [4K]

Answer:

D. 4Al + 3O2 → 2Al2O3

Explanation:

Chemical reactions involves the chemical combination of two or more substances called REACTANTS to yield other substances called PRODUCTS. However, in accordance with the LAW OF CONSERVATION OF MASS, the amount of reactants must be equal to that of the products.

To accomplish this, the reaction must be BALANCED. A balanced equation is an equation in which the number of atoms of each element in the reactant side equals the number of atoms in the product side. In this reaction involving Aluminum and Oxygen to give Aluminum oxide as follows:

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A coefficient is used to balance the number of atoms on both sides of the equation as follows:

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