RUNCUREL, Romania (Thomson Reuters Foundation) - The letters arrived just before Christmas last year, 134 envelopes addressed to the residents of Runcurel, a village in Romania's south west.
Inside was the news that Jilt Nord, a state-owned coal mine, planned to expand and the people of Runcurel would lose their homes and land.
Answer:
1.The velocity of fluid
2.Fluid properties.
3.Projected area of object(geometry of the object).
Explanation:
Drag force:
Drag force is a frictional force which offered by fluid when a object is moving in it.Drag force try to oppose the motion of object when object is moving in a medium.
Drag force given as

So we can say that drag force depends on following properties
1.The velocity of fluid
2.Fluid properties.
3.Projected area of object(geometry of the object).
Bending effect!! Whenever the orientation of the diffracting planes changes when the diffracting planes bend, the contrast changes