t****n 发帖数: 1347 | 1 Problem: you are N miles east of the mountain ridge (the Continental Divide
in this case), and k thousand-feet lower than the top of the ridge, your
plane climbs at m fpm, you start flying toward the ridge at an angle of
theta degrees when the sun just gets behind it. Find theta that allows you
to see a very long sunset.
The mountain in peak the middle is the 14,259 feet Longs Peak, after a 20-
minute long sunset. |
L*********r 发帖数: 1201 | 2 中学物理题?
Divide
you
【在 t****n 的大作中提到】 : Problem: you are N miles east of the mountain ridge (the Continental Divide : in this case), and k thousand-feet lower than the top of the ridge, your : plane climbs at m fpm, you start flying toward the ridge at an angle of : theta degrees when the sun just gets behind it. Find theta that allows you : to see a very long sunset. : The mountain in peak the middle is the 14,259 feet Longs Peak, after a 20- : minute long sunset.
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G*****o 发帖数: 1341 | |
L*********r 发帖数: 1201 | 4 版三别光看图,赶快做题
【在 G*****o 的大作中提到】 : 第二章图好漂亮。
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b*****e 发帖数: 1264 | |
t****n 发帖数: 1347 | 6
不多,近50吧,夏天夜晚太短,冬天晚上太冷。
【在 b*****e 的大作中提到】 : trajan 现在多少夜航小时了?
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b*****e 发帖数: 1264 | |
G*****o 发帖数: 1341 | 8 这题目不好做,
因为theta 是随时间变化而变化的。 |
t****n 发帖数: 1347 | 9
其实夜航挺有好处的,别的飞机只要开着灯,老远就能望见。
晚上练instrument也合适,因为外面本来就黑,不看就不看好了。
【在 b*****e 的大作中提到】 : 惭愧,我自从私照训练结束后,一次夜航也没飞过了
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L*********r 发帖数: 1201 | 10 一会就去飞第一个夜航转场,呵呵
【在 t****n 的大作中提到】 : : 其实夜航挺有好处的,别的飞机只要开着灯,老远就能望见。 : 晚上练instrument也合适,因为外面本来就黑,不看就不看好了。
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