MyThreeSons
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Posts posted by MyThreeSons
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If you have the two balloons opposite each other on a balanced stick, you'll notice the difference from the heavier one due to the added mass. They are being weighed against each other at that point - very similar to how a teeter totter works.
On a typical scale, the air is pushing down equally whether it is in the sealed bag/balloon or outside of it. Sealing it makes no difference.
With the balanced stick example, you are indirectly showing that the balloons have different weights. This is a demonstration of the imbalance of torque about the pivot point. Let's say you have two empty balloons suspended from two ends of stick. You find the point at which you can support the stick and keep it level. At that point the counterclockwise torque about that pivot point it equal to the clockwise torque about that point. Then, when you add air to one of the balloons, you have increased its mass. If you don't change the pivot point, the side with the inflated balloon will be lower. You should be able to find a pivot point closer the inflated balloon where the stick will once again be level. In any case, you have demonstrated that there is more mass / weight in the inflated balloon than there was before you added the air.
But a platform scale, like the one they use at the grocery store, doesn't measure air pressure, does it? It indirectly measures the force of gravity acting on the object in question -- the object's weight. The old bathroom and grocery scales did this with a spring mechanism. My research online shows that the new electronic ones do it with a piezo-electric strain gauge.
In any case, I'm missing something in understanding how if you add air to the system and seal it, you haven't added mass. I have already agreed that in the case of buying bulk product in a grocery store, it isn't likely to be enough to register on the scale, or change the price.
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I had a friend who believed that hair grew from the ends, not the root. There was no convincing her otherwise. She also believed that tomatoes were not an ingredient in ketchup. I'm not sure what she believed it was made of.
Couldn't you find someone with dyed hair whose natural color roots were showing?
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But there is air on top of the bag and the whole atmosphere presses on the scale, with 14.7 lbs per square inch.
Whether the air is in the bag or on top of the bag makes absolutely no difference, not even for the most expensive item.
Note: I am not arguing -- I am asking questions. :closedeyes:
(When I brought up the expense of the item, I was making a poor attempt to recognize the impact of what I perceived as the increased mass. We are obviously talking about a very small mass of air that would be in the bag, so the price per ounce would have to be very great for it to matter as far as the cost goes.)
I get what you're saying if the bag is open. But what if it is sealed?
Let's say I have a balloon and I measure its weight when it is empty. And then I blow it up, tie it off and re-weigh it. If my scale is precise enough, will I not notice an increase in the weight? I have added air, so I have added mass, right? If I had added water, I certainly would have a more noticeable increase in mass.
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My dh used to tell our sons, "No is a complete sentence."
Dr. Phil often says, "Yes or no? This is not an essay question."
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I thought the OP was going to be about those damn Evites. Fourteen "Maybes" and one "no." Well, are we having a party or not? ;)
When I saw "Evites" I thought it was some group I'd never heard of before. You know, like the Canaanites, the Levites, the Amorites, the Hittites ....... :closedeyes:
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I used to work at a store that sells bulk foods. I once had a customer argue with me that they needed to squeeze all the air out of their bags of rice, beans, etc. before I weighed them because they "weren't paying extra for the weight of that!" O_o
Well, you know -- air is matter and does have mass, and therefore weight.
But unless she was buying something that cost a lot per ounce, and had a whole lot of air trapped in the bag, it was probably not something she needed to be worried about.
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In addition to all the big ones mentioned, we have
Zaxby's (chicken)
Bojangles (more, but different, chicken)
Cook Out (burgers, BBQ sandwiches)
Zaxby's is my go-to for fast food when I can swing it. Not expensive, but not cheap-cheap. I love their Zalads -- especially the Cobb and the Asian (when they have it).
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For those who don't know, I'm a pediatrician. My husband once argued with me about what to do when one of our kids had a fever to the point where I finally handed him the phone and told him to call the doctor on call and that I was pretty sure she was going to agree with me.
This reminds me: My old college roommate was pregnant with her first child. She said she was in labor, but her husband said no, she wasn't. She insisted she was. He said he was going to work. She went to the hospital, where they confirmed that things were happening quickly, and wanted to know where her husband was. She told them he had gone in to work because he said she wasn't really in labor. Since this was before cell phones, they asked her if she wanted them to call him at work and get him to come over. She told them they could just page him........ He was a doctor in the hospital.
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I knew a guy in college who was a Robert Something Something V. They had used all of the typical nicknames for Robert, so he went by "Bucko".
I just looked him up online. The first Google hit was an obituary, but it turns out that was for his father.
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:confused1: I have nothing to add to this conversation. I'm just dying to know how you make PB&J sandwiches. And what your MIL thinks you should be doing differently!
I'll bet it has to do with putting the jelly on top of the peanut butter, rather than spreading it on the other slice. I've heard the statement that if you put the jelly on the plain bread, it will make the sandwich soggier than if you spread it on the peanut butter.
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Dd and I just wanted to have lunch so we went to Chick-fil-A and walked into the place filled with people dressed like cows and the mooing.....yeah we got our Chick-fil-A to go, it was crazy. It was interesting though some people are very creative.
I've seen pictures of the places around here with lines out the door and snaking through the parking lot.
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We purposely stayed far away from CFA yesterday. Ds is an introvert, and dh would have been overwhelmed, too. We went to CookOut for dinner instead.
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Oh, and the gal at the newsstand in the airport who thought I was really stupid for believing that New Mexico is part of the United States.
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Let's keep this light, please. I'll start with one of my all-time favorites:
A Geometry student I was tutoring was surprised that I knew anything about trees. (There was a word problem involving trees.) After all, I had told him that I grew up in California. Because there are no trees in California. You read that correctly: he actually argued with me about whether there are any trees in California. Even though I spent the first 39 years of my life there, he knew better than I. California is all cities and beaches. No trees at all.
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And ..... when did it go from "binder paper" to "filler paper"? I grew up with binder paper. And Pee-Chees folders. Those were the days.
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Another homeschooling Mom and I were talking about this just last week. It seems that you do have to look to find the 8-1/2 x 11 size. I'm guessing it'a all about money --- the smaller size is almost 10% smaller in area, and therefore costs less to make.
On a side note: a Geometry student I tutored last year thought that it was unreasonable that a textbook problem assumed that a high school student would know that what was meant by "an 8-1/2 x 11 sheet of paper".
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My Dad's mother really pressured my folks to name a baby after her great-great-or-something Uncle Asa. They refused. As my Mom said, she had two sons of her own she could have stuck with that name if she liked it so much.
No pressure on me, but in my Mom's mother's family, all of the men for several generations have had the middle name Allen. I didn't use it with my first two sons, but when son number three was born, we went with it. I think it pleased my Mom, although she is still miffed that I kicked her out of the delivery room when it was time to push. (She was annoying me, so I sent her to go wait with my Dad. I hadn't planned on her being there anyway.)
We did name middle ds after dh's Dad -- both first and middle names. When we visited when he was about six months old, I placed him in my m-i-l's arms and said, "Here is John Thomas E_____". She took him, rocked him, and repeated, "John Thomas, John Thomas" and then said, "I never could stand that name!" LOL -- she had been married to the original John Thomas E_______ for over 50 years, and loved him dearly. No one knew she didn't like his name.
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I only text people I know don't mind a text at a late hour. I do send messages on Facebook at all hours and had somebody mention how she thought it was rude of people to message late at night. I just assumed that you would read a Facebook message a time convenient to you.
Some of us get email notifications of certain Facebook events. So a message might come through as an email.
My email alert sound is the least intrusive, so I generally sleep through those. The sounds for alerts (such as new or weather alerts), new text messages, and actual phone calls, will almost always get through to my brain.
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Hugs and prayers that the rest of your trip is full of only the pleasant sort of adventures.
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Hugs and prayers.
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I keep my phone on for emergencies. And I agree, I think of texts like phone calls and would never text late at night or early am. My phone makes a buzzing sound for a text and its woken me up several times by people texting me. Emails are quiet, at least as far as I know, so I have sent them at all hours. Reply when you want. But texting is noisy, and also seems like an immediate response is needed.
I can change the alert sound for phone calls, versus text messages, versus emails. I can make any of them as "intrusive" as I want. So I don't assume that texts or emails are "quiet" for other people.
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Yep ... almost every day.
Due to dh's illness (Alzheimer's), I can't even run ideas past him very well. He listens and agrees with whatever I say, even if I present both sides of the issue in one conversation.
I have been messing around for years about whether to leave our church. I just couldn't bite the bullet and do it. Finally, the elders told me I should. I wish I felt better about it, but I'm still torn. Sigh .....
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I leave my phone on so that my son can get my attention in the middle of the night if he suffers a medical event. He is at risk for a couple of serious issues, and since he sleeps in our little studio apartment next to our house, I cannot hear him yell. I rarely get text messages from anyone else during the night, but I do get new alerts that are sometimes not really alert-worthy, in my opinion.
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A friend on Facebook just posted a picture from outside Mother Emmanuel Church. She wrote some wonderful things about grace, in the wake of "a confused and mislead (sic) young man ....." shooting church members. I guarantee that if it had been a black guy who shot white church-goers, those are not the adjectives she would have used. But it is definitely not worth pointing that out to her .
Just for fun: ridiculous things people have argued with you
in The Chat Board
Posted
This reminds me of the first time I voted here in SC, after having grown up in CA, where my folks often served as precinct workers.
I was surprised to find that within a single precinct here, there were several different ballots available. We don't register by party, so it wasn't a Republican / Democrat thing. There were things like different fire districts, sewer districts, etc that had issues or candidates to vote on. The gal who had me sign in gave me a slip of paper with a code on it that I handed to the gal at the voting booth. She punched something in to the machine, and I voted.
Afterwards, I asked about the different ballots, and how that worked. What if she had punched in the wrong code, and I voted for something I wasn't supposed to? She told me that it was okay, that they would go back and check to see that each person had voted on the correct ballot. And they could tell who / what each person had voted for, and cancel those votes that shouldn't have been cast. She insisted that they could look up my name and see exactly how I had voted on each candidate and issue.