Which describes the refraction of a wave?

waves of electromagnetic energy called x-rays pass right through skin and bones.
light changes direction moving through the lens of a magnifying glass.
a wave of sound bounces off a hard surface at the same angle that the wave came in.

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.

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