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Sergeeva-Olga [200]
3 years ago
8

What can be absorbed or released as the result of a chemical reaction?

Physics
2 answers:
Artist 52 [7]3 years ago
8 0
Chemical reaction involves absorption or release of heat energy.
Lera25 [3.4K]3 years ago
3 0
Energy is released or absorbed ,but no loss in total molecules,each of which consists of one atom of oxygen and two of hydrogen,are broken down.!
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Suppose an object’s initial velocity is 10 m/s and its final velocity is 4 m/s. Mass is constant.
Ostrovityanka [42]

The correct answer is:

Work is negative, the environment did work on the object, and the energy of the system decreases.

In fact, the work-energy theorem states that the work done by the system is equal to its variation of kinetic energy:

W=\Delta K=K_f -K_i

In this problem, the variation of kinetic energy \Delta K is negative (because the final velocity is less than the initial velocity), so the work is negative, and this means that the environment did work on the object, and its energy decreased.

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3 years ago
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The law of inertia to both moving and no moving objects. True or false
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Answer: B. helium
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Find the velocity and distance travelled of a car that is accelerating at 3 m/s2 for 4 seconds.
marta [7]

Explanation:

Given:

v₀ = 0 m/s

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Find: Δx and v

Δx = v₀ t + ½ at²

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storchak [24]

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