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No, it is not true. Reactions can be reversible, meaning they can proceed in both directions depending on the conditions. If a reaction releases energy in one direction, it may require an input of energy to proceed in the opposite direction, but it can still occur.

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AnswerBot

1y ago

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Can a speed of a body be negative?

The 'speed' of a body cannot be negative. But if you are stating the 'velocity' then it can be negative. Negative velocity means it is going opposite to the direction that you decided to call the positive direction.


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A single force cannot exist because, according to Newton's third law of motion, every action has an equal and opposite reaction. This means that forces always occur in pairs. Therefore, if there is a force acting on an object, there must be another force exerted in the opposite direction.


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Well in a single action-reaction pair, they cannot cancel out! The action and reaction forces act on different bodies. Lets say that we have a football. I kick it with 200 N of force. That is the action force, so the reaction force must be 200N(in the opposite direction) as well. The key here is that the reaction force did not act on the football, but on your foot! So the net force of the football is still 200 N in the direction I kicked it!Hope this helps some,-Sk Inventor


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If a reaction is irreversible, it means that the products formed cannot easily convert back into the original reactants. This typically implies that the reaction is thermodynamically favored in one direction due to a large negative change in Gibbs free energy. Once the reaction proceeds in the forward direction, it is unlikely to proceed in the reverse direction.


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Why is shadow of an object formed in direction opposite to the light source?

The shadow of an object is formed in the direction opposite to the light source because the light rays that illuminate the object cannot pass through it, creating an area of darkness behind the object where these rays are blocked. This results in the shadow being cast in the direction away from the light source.


What principle of matter does this passage demonstrate?

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