The fan is un-balanced When you bought the fan, there was a package with it. In that package there was a device that looked like a plastic paper clip. This device is used to clip on to a blade to balance the fan and stop it from wobbling. It is sort of a trial and error method on placement of the clip but once the correct position is found it does the job very well.
Because they are fans and their movement causes the blades to contact a greater volume of air in a given period than other items that are stationary.
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A metallic bond has free electrons that can move around the metall atom lattice. Note that electrons never stop moving so all bonds involve constantly moving electrons, including ionic.
because the position of the moon is constantly moving
molecules in the air constantly moving and hitting the dust particle.
Superheated gas can be called Plasma. It would only move because some force is constantly causing it to move. By itself it would not do that.
Because human skin cells (the main constituent of dust) will cling to almost anything - whether it's moving or not ! Additionally, the motor driving the fan will have a minute static charge when running - which will attract dust particles.
For example, a pendulum, or anything that moves in a circle or elipse, such as a planet moving around the Sun.
Centrifugal force is observed in a ceiling fan. Thrust force is what moves a car moving on the road.
i have black finned sharks and they chase each other constantly!! i wouldn't think anything of it being that sharks are very active aquarium animals and are constantly moving and playing.
Well, the earth rotates so they probably are not moving.
Maybe you could go see if they need help with moving or building anything (if you want, this is only a suggestion), then you can see whats causing the bumping or dropping on your ceiling, you can also be making new friends this way and mention that you heard the sounds coming from your ceiling. Good Luck!
The angle which you see the trees is constantly changing because you are moving and the trees are not.
electrons
Time
All of them are.
it means that we are constantly moving.
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