Please help me , i just need to past this !

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Explanation:

propagation means starting point, and waves travel from the starting point forward until something changes the direction of the waves. good luck!

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary