If two waves with equal amplitudes and wavelengths travel through a medium in such a way that a particular of the medium is the crest of one wave and at the trough of the other wave at the same time, what will happen to that particle?

If this were to happen then the particle would be at the node (the point in the middle where the lines meet). Therefore, the particle will not move up or down because you can see the waves interfere destructively so there is no movement at the node.

answer. The particle will remain stationary due to interference.

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

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a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.