Why did you come to ? generic salmeterol How about a battery? If I want to calculate the energy stored in a battery, I need to find the total energy required. Jeff Bezos said that the delivery would be under 30 minutes, but how much of that time would be spent flying? If it was traveling over a 10 mile journey, that would have to fly fairly fast to get there in under 30 minutes (assuming it takes at least 10 minutes to get the package ready). That would put the drone speed at about 30 mph. I would guess it be about half that speed. Of course the speed doesn’t matter as much as the time. Let me just guess that the octocopter will need to fly for 30 minutes minimum. 必須 2000文字以内 [bbs:youtube:(Youtubeの動画ID)]と書くとYoutubeの動画が貼れます。(例:[bbs:youtube:OQThUAQ0UN0])