[nitpick] could have written a black "シ" in front of the "sh" to keep consistency with the other katakana. Also it looks like a grinning smiley, which is also nice.
because of two bodies can not occupy the same space, the feather and the ball will be in different position when you drop them. And therefor gravitation will pull the earth slightly more toward the ball and slightly less toward the feather.
Go for it. Just don't try do everything at once and burn out.
Treat it as a hobby. Spend money on tools you may only need for a single project. Experiment. Take your time. Watch youtube videos of other makers to scratch your itch, when you can't (or don't want to) actually do it yourself. Appricate the beauty of enginerring around you. Enjoy the process.
Just start. Either you gain a new fulfilling new hobby, or you satisify your urge enough, and stop being crazy.
Beim Bau neuer Wohngebäude in der EU soll die Errichtung von Photovoltaikanlagen verpflichtend sein.
"Verpflichtend" im sinne von "Das Haus wird abgerissen, wenn man das nicht macht", oder im sinne von "Man bekommt weniger Fördergeld wenn man das nicht macht (wodurch der Bau vielleicht unwirtschaftlich wird)"
is it still owned by tencent?