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Activity for TextKit‭

Type On... Excerpt Status Date
Edit Post #289448 Post edited:
over 1 year ago
Edit Post #289448 Initial revision over 1 year ago
Question How do I calculate which concentration of Vinegar is cheapest, before diluting it?
Presuppose that I need vinegar of $c$ concentration, where $c$ < any concentration listed below. Let $w$ be the price of water that I'll use to dilute. How do I deduce which concentration (of Vinegar) is cheapest to buy? I shall dilute it to c concentration. | Solace Labs' concentrations ...
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over 1 year ago
Comment Post #287829 Thanks, but measure what exactly?
(more)
over 1 year ago
Edit Post #287828 Post edited:
almost 2 years ago
Edit Post #287828 Post edited:
almost 2 years ago
Edit Post #287828 Initial revision almost 2 years ago
Question To what extent does blender speed dissolve table salt + cold tap water?
At home daily, I need to mix my table salt + COLD tap water. As "Marine salts dissolve faster and more thoroughly when added to circulating water," I "use a powerhead to speed up mixing time — my Vitamix 7500 blender. ![](https://m.media-amazon.com/images/I/71gMQcx0eOL.ACSL1500.jpg) Speed 10, ...
(more)
almost 2 years ago
Edit Post #286662 Post edited:
over 2 years ago
Edit Post #286662 Post edited:
over 2 years ago
Edit Post #286662 Post edited:
over 2 years ago
Edit Post #286662 Initial revision over 2 years ago
Question Why can these Single Vision lenses slow myopia for kids, but not adults?
These WorldFamous companies advertise that their lenses can control myopia for kids, NOT adults. But none of these lenses are approved by FDA. I asked my optometrist why merely kids, not adults. But I could not understand his abstruse explanation at all! Can you please explain like I'm 5? >Essilor...
(more)
over 2 years ago
Comment Post #286644 But please don't change the meaning of my post. You mistakenly edited my post to "I understood some points". No! I understood nothing!
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over 2 years ago
Edit Post #286644 Post edited:
over 2 years ago
Edit Post #286644 Post edited:
over 2 years ago
Edit Post #286644 Post edited:
over 2 years ago
Edit Post #286644 Initial revision over 2 years ago
Question Optically, why are circular eyeglasses lenses better than rectangular?
My optometrist said that round eyeglass lenses are OPTICALLY better than rectangular, particularly to correct myopia. He was NOT referring to fashion or style. I couldn't understand his explanation at all! I remembered merely some phrases about rectangular lenses like how they — 1. distort you...
(more)
over 2 years ago
Edit Post #286309 Post edited:
over 2 years ago
Edit Post #286310 Post edited:
over 2 years ago
Edit Post #286309 Post edited:
over 2 years ago
Edit Post #286310 Post edited:
over 2 years ago
Edit Post #286310 Initial revision over 2 years ago
Question Why can someone observe light, even when the light fails to illume that someone?
I never grokked the optics behind LightHouses and the WW2 poster below work. LightHouse beams are narrow and focussed. Doubtless, the light source can fail to illumine a seafarer or the enemy submarine. But then how can the seafarer or enemy sailors behold your light source? It counters intuiti...
(more)
over 2 years ago
Edit Post #286309 Post edited:
over 2 years ago
Edit Post #286309 Post edited:
over 2 years ago
Edit Post #286309 Post edited:
over 2 years ago
Edit Post #286309 Post edited:
over 2 years ago
Edit Post #286309 Initial revision over 2 years ago
Question Why do markers reflect light, even when the light source fails to illumine the space between the source and markers?
Please see below screenshot of 15:59.The LED spot light (fastened to the front of the boat) illumines merely a few meters in front, and fails to illumine most of the water between the boat and the markers. So how can the LED still illumine the markers that I highlighted in orange? It counters in...
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over 2 years ago
Edit Post #285294 Post edited:
almost 3 years ago
Edit Post #285294 Initial revision almost 3 years ago
Question Are lamps, with blistering light bulbs exposed and facing down on the user, dangersome?
IKEA discontinued this NOVEMBER lamp in 2007, but I still use it. IKEA confirmed that they did not intend or design any cover or share with this lamp, and the light bulb is supposed to be exposed. But isn't this parlous? As you can see below, it uses a bizarrely shaped light bulb that heats up WAY...
(more)
almost 3 years ago
Edit Post #284890 Post edited:
about 3 years ago
Edit Post #284890 Initial revision about 3 years ago
Question Why did my roller luggage's wheels stop turning smoothly?
Two weeks ago, my carry on worked perfectly. But last week the detachable wheels stopped rotating smoothly, when I tried to glide my carry on. The wheels budge JUST A TAD when you push them hard, but it should be EFFORT LESS! Here are two pictures. I see nothing jammed in the wheels. I ventilated...
(more)
about 3 years ago
Edit Post #280486 Post edited:
over 3 years ago
Edit Post #281321 Post edited:
over 3 years ago
Edit Post #281321 Post edited:
over 3 years ago
Edit Post #281321 Initial revision over 3 years ago
Question Is it rational to freeze water bottles during colder nights, and place them in front of a fan during warmer days?
1. Is this advice correct? Are they alluding to Freezing Point Depression? Adding salt to tap water lowers the Crystalloid's freezing point. > Pour 3 tbsp (51 g) of salt into each of your 3 plastic water bottles. Use disposable plastic bottles for the easiest set-up and clean up. Pour 3 tablespoo...
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over 3 years ago
Edit Post #281290 Initial revision over 3 years ago
Question Does folding glasses increase the probability of separating at the hinge?
Please see the images below. I owned these Mykita John glasses for three years, which feels short for glasses to break! Every day, I fold them them before placing it on my night stand and going to bed. Today, when I unfolded them, the left temple just separated. Now I'm wondering if I folded my g...
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over 3 years ago
Edit Post #281179 Initial revision over 3 years ago
Question How dangerous is mounting and firing a gun on another human's body part?
I stumbled these pictures on Quora, and I'm assuming they were real. ![](https://qph.fs.quoracdn.net/main-qimg-d90c516e6bd4119c2a770763a9e5d556) ![](https://qph.fs.quoracdn.net/main-qimg-b1f6c44a23805be4960629e15bbfb747) ![](https://qph.fs.quoracdn.net/main-qimg-d91ecb9e0111748ea37b0cc28cb...
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over 3 years ago
Edit Post #280987 Post edited:
over 3 years ago
Edit Post #280987 Post edited:
over 3 years ago
Edit Post #280987 Initial revision over 3 years ago
Question For cleaning food and objects, power scrubber vs. Electric rotary toothbrush?
I'm not asking about cleaning human organs here. This handheld power scrubber ![](https://img.buzzfeed.com/buzzfeed-static/static/2019-01/30/14/asset/buzzfeed-prod-web-01/sub-buzz-12343-1548876961-1.jpg?downsize=700%3A%2A&output-quality=auto&output-format=auto) looks like your average rotary t...
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over 3 years ago