/u/dumptydumpty's posts in /r/askscience

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Which is better cell phone signal: 0/1 bar on LTE/4G or 5 bars at 3G?

1 upvotes

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A 5 cm wide ball rolling down a 1m tall slope will reach a certain speed at the bottom of the slope. Will a 50m wide ball rolling down 1km tall slope (assuming same grade) reach the same speed at the bottom of the slope?

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What is the probability that a regular housefly dies of old age, as opposed to being eaten, killed, etc?

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Rainbows always appear to start and end in the same location, even when you're moving in a car. Why don't they move as you move, since the angle of the sun relative to your eyes is changing as you move?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Which is better cell phone signal: 0/1 bar on LTE/4G or 5 bars at 3G?	1
A 5 cm wide ball rolling down a 1m tall slope will reach a certain speed at the bottom of the slope. Will a 50m wide ball rolling down 1km tall slope (assuming same grade) reach the same speed at the bottom of the slope?	1
What is the probability that a regular housefly dies of old age, as opposed to being eaten, killed, etc?	1
Rainbows always appear to start and end in the same location, even when you're moving in a car. Why don't they move as you move, since the angle of the sun relative to your eyes is changing as you move?	1