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Poser #1230603
10/12/20 10:06 AM
10/12/20 10:06 AM
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Upstate NY
Pandora Offline OP
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Say that I row my bowling ball to the middle of a lake. I drop the ball over the side and watch as it sinks to the bottom. What happens to the water level of the lake? Does it rise, fall or remain the same? Please explain your answer.

[Linked Image]


We do not see things as they are, we see things as we are. - Anais Nin
Re: Poser [Re: Pandora] #1230604
10/12/20 10:15 AM
10/12/20 10:15 AM
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Alabama
soot Offline
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Hmmm... good question
I am thinking the level of the lake will rise as the bowling ball will displace a spherical volume of water thus causing the lake to rise think


Dan
To learn, read...To know, write...To master, teach...To live, play games & listen to whale music
Stay Smart & Stay Safe
Re: Poser [Re: Pandora] #1230612
10/12/20 11:02 AM
10/12/20 11:02 AM
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The Outer Limits
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I think it stays the same. The act of rowing the bowling ball out in a boat already displaces the effect of the bowling ball weight and then dropping it overboard just changes the location of the ball in/on the water.


Did you ever stop to think and then forget to start again?
Re: Poser [Re: Pandora] #1230630
10/12/20 01:55 PM
10/12/20 01:55 PM
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Posts: 51,058
Upstate NY
Pandora Offline OP
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Both answers sound good but neither is correct. grin


We do not see things as they are, we see things as we are. - Anais Nin
Re: Poser [Re: Pandora] #1230632
10/12/20 02:01 PM
10/12/20 02:01 PM
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shocked oh my!

I have faded remnants of a science experiment in junior high ... but alas, nothing concrete headscratch


Dan
To learn, read...To know, write...To master, teach...To live, play games & listen to whale music
Stay Smart & Stay Safe
Re: Poser [Re: Pandora] #1230645
10/12/20 02:57 PM
10/12/20 02:57 PM
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The Outer Limits
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Hmmm....I'm surprised that neither of these answers are right. I can't believe that I could possibly be wrong on a question of a topic that I'm so knowledgeable on....water! I wish I had a fainting emoticon! Wait...I'm feeling a bit woozy woozy


Did you ever stop to think and then forget to start again?
Re: Poser [Re: Cue] #1230651
10/12/20 04:12 PM
10/12/20 04:12 PM
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Minnesota, USA
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It's been a long time since I've had to think about this but, isn't there a difference between water displacement by weight vs by volume? The bowling ball is in the boat, which is displacing water by weight. woozy


The best math you can learn is how to calculate the future cost of current decisions.
Re: Poser [Re: Pandora] #1230652
10/12/20 04:23 PM
10/12/20 04:23 PM
Joined: Aug 2000
Posts: 51,058
Upstate NY
Pandora Offline OP
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Let me spritz a little water on poor Cue's face first.... [Linked Image]

Cheryl, you're bang on! Say that a bowling ball weighs four times as much as its volume in water. If the ball is floating (in the boat), it would displace four balls of water. But if the ball is at the bottom of the lake, it would displace only one ball of water. Because less water is displaced after dropping the ball, the level falls. grin


We do not see things as they are, we see things as we are. - Anais Nin
Re: Poser [Re: Pandora] #1230676
10/13/20 02:14 AM
10/13/20 02:14 AM
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Cle-ver! bravo


A book fell on my head the other day. I only have my shelf to blame....
Re: Poser [Re: Pandora] #1230703
10/13/20 10:11 AM
10/13/20 10:11 AM
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The Outer Limits
Cue Offline
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Oh yeah, I knew about the old bowling ball weight displacement on the row boat effect. That's a really old law. Noah realized it when a white rhino fell overboard. The water level dropped just as they were passing over Mount Ararat which allowed the rhino to stand on the ground saving his life. It was a miracle!


Did you ever stop to think and then forget to start again?
Re: Poser [Re: Pandora] #1230709
10/13/20 10:36 AM
10/13/20 10:36 AM
Joined: Aug 2000
Posts: 51,058
Upstate NY
Pandora Offline OP
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rotfl


We do not see things as they are, we see things as we are. - Anais Nin
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