A solid weigh 0.04N in air, 0.024N when fully immeased in a Liquid of density
800kg/m³.calculate the volume of the
solid
( g=10m/s²)​

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

compass can be used day and night, cloudy or sunny

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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