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The air pressure is the same, inside or outside the paper bag.
inside because the oxygen gets trapped inside the bag causing the grapes to decay faster instead of it in the refrigerator
The chip bag is sealed, and no air can get inside it. The air pressure decreases as you get higher, so the air inside the bag expands to equalize the pressure on the outside of the bag.
A porous bag is a bag that has small holes in it, allowing the powders or leaves or whatever is inside it to come out. A tea bag is a porous bag.
The pressure inside the bag is the same as the pressure outside.
Osmotic pressure. The concentration in the bag is greater than outside the bag. Sugar molecules cannot pass thru the bag but water can. To try to create the same concentration inside and outside the bag water moves into the bag to dilute the solution inside the bag. This extra water now in the bag causes the liquid to move up the straw.
Usually you take a bag with you and put your hand in the bag, grab the waste, then turn the bag inside out so that your hand is in the outside and the waste is in the bag. Tie it up, throw it out.
You can get the smell out of a sealskin coat by hanging it up in a vinyl garment bag and then adding an open packet of ground coffee to the bottom of the bag. Zip the vinyl garment bag shut and leave for a few days to one week. Each day, stir the ground coffee remembering to close the garment bag. When the coat smells of coffee, remove it from the garment bag and hang it outside in the fresh air for a few hours. Store as usual in your wardrobe.
The bag does not collapse because the air pressure acting on the inside of the bag is equal to the air pressure outside the bag (There are the same number of air molecules per unit volume inside the bag as outside). However if you had filled the bag with air at high altitude where the air pressure is lower, then sealed it and brought the bag down to sea level you would find that the higher external air pressure (there are fewer air molecules per unit volume inside the bag than outside) would begin to compress the bag down to a smaller volume. This in turn would compress the air inside the bag leading to an increase in its pressure. This decrease in volume will continue until the air inside the bag is compressed to the point where its pressure is equal to that of the external air pressure. For further information on this topic it may be worth searching for the term "Combined Gas Law" which will explain the relation between pressure, temperature and volume.
I believe it is. because vinyl is soft and not weary crash resistant , unlike leather.
No. The fetus is inside the uterus which is closed, like a bag. The rest of the mothers organs are outside the uterus.
The choice is yours. Leather is very durable but more costly than vinyl. Also vinyl bags can be a good choice for students or those on a budget. There are more color options in vinyl.