Question

which of the following is used as a rocket propellant

_ is the most abundant element in the earth's crust

testing is the process of forming rust on ____​

Answer 1

Answer:

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Answer 2

Answer:

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity

Explanation:

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