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Why does placing a jar under warm running water help loosen the lid?
There are two ways that putting a jar under warm water helps loosen the lid. When heated, materials expand. So the air in the jar could expand, reducing any internal suction. Secondly, the metal cap could expand so as to not have as much friction with the rest of the jar.
Why will a sealed jar float?
The jar, much like massive ships on the ocean, displaces the water and thus it floats. The jar doesn't even need to be sealed--but it does have to remain upright so it doesn't tip over and fill with water. You can imagine the water that is being displaced pushing upward toward the jar to to keep it afloat despite the jar's weight. Another factor that may be playing a part in this is that in a sealed jar, much like an inner tube at the pool, the air inside is less dense than water. The general rule of physics, in this case, is that less dense objects are "lighter" than those of more dense objects--the relative densities of the two things (water and the jar filled with air) would determine which object rises to the top.
How do you get 4 gallons of water by using a 3 gallon jug and a 5 gallon jug?
Method 1: Fill the 3-gallon jug. Pour this into the 5-gallon jug. Fill the 3-gallon jug again, and pour from it into the 5-gallon jug until it is full. This leaves 1 gallon in the 3-gallon jug. Empty the 5-gallon jug, and then pour the gallon from the 3-gallon jug into it. Fill the 3-gallon jug, and pour it into the 5-gallon jug, thus making 4 gallons. Method 2: Fill the 5-gallon jug. Pour this into the 3-gallon jug until it's full. Empty the 3-gallon jug, and then pour the remaining two gallons into the 3-gallon jug. Fill the 5-gallon jug, and then pour into the 3-gallon jug until it is full, leaving 4 gallons in the 5-gallon jug.
Experiment to demonstrate that sound need a material medium to propagate?
Take an electric bell and hang this bell inside an empty bell-jar fitted with a vacuum pump (as shown in the following figure). Initially, one can hear the sound of the ringing bell. Now, pump out some air from the bell-jar using the vacuum pump. It will be observed that the sound of the ringing bell decreases. If one keeps on pumping the air out of the bell-jar, then at one point, the glass-jar will be devoid of any air. At this moment, no sound can be heard from the ringing bell although one can see that the prong of the bell is still vibrating. When there is no air present inside, we can say that a vacuum is produced. Sound cannot travel through vacuum. This shows that sound needs a material medium for its propagation.
If an alarm clock is in a jar filled with air what happens if all the air sucked out of the jar?
The alarm would be much quieter, as sound can't travel through vacuum. But if it's a mechanical alarm clock then vibrations would be transferred from the clock to the jar and then to whatever the clock is standing on , and you'd probably be able to hear some of that.
how much does a jar weigh?
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How much does a jar of jam weigh?
about a few ounces :)
How do you use a 3 and 5 quart jar to measure 1 quart?
Fill 3 qt jar, and empty into 5 qt jar. Fill 3 qt jar again, and empty 2 qt into 5 qt jar, 1 qt left.
Where does water in the jar come from when an empty jar is left outside overnight?
Rain or Condensation
Would a plastic jar protect an egg better then a plastic bag?
no
What happens if you drop a banana in a jar and leave it there for two weeks?
It will rotYes, it will after 2 weeks, but did you mean a jar full of fluid or something or and empty jar
Would you say the jar is half empty or half full?
== == If an optimist answers this question, the jar would be half full. === === If a pessimist answers this question, the jar would be half empty. === === "AN OPTIMIST SEES OPPORTUNITIES IN DIFFICULTIES BUT A PESSIMIST SEES DIFFICULTIES IN OPPORTUNITIES"
When you fill me still i look empty what am i?
A glass jar filled with air
Can aqua regia be stored in plastic jar?
No, it cannot be
How do you measure the volume of water in a jam jar?
Empty the 5-liter jar and remove 1 liter of the 7-liter jar.
What happen if pour water in a jar full of marbles?
Water will fill ask the empty spaces when you pour it into a jar full of marbles.
Is an empty mason jar an renewable resource?
No, a mason jar is not a renewable resource. It is not a natural occurring substance that can be renewed. Glass, however is a renewable resource.
