https://padlet.com/huayi/1nnafxlqsv6rqthg Made with a quick smile en-us 2022-01-16 07:14:52 UTC 2025-09-25 15:01:43 UTC hello@padlet.com https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068892775 1) So that the submarine will not break.
2) Strength]]> 2022-02-28 05:32:34 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068892775 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068894453 1) 
when someone sucks on the straw, air is removed from it. thus air pressure in the straw decreases and becomes lower than surrounding atmosphere. 

2)
air escapes front he hole. thus water cannot be sucked


]]> 2022-02-28 05:34:27 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068894453 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068894756 Q1: When the patient sucks on the straw,some air is removed from it.The air pressure inside the straw decreases and becomes lower than the surrounding atmospheric pressure and then the higher atmospheric pressure pushes the liquid up the straw and into the patient's mouth.
Q2: The air pressure in the straw with the hole does not change so the pressure is the same as the atmospheric pressure so it cannot push the liquid up to the patients mouth.]]> 2022-02-28 05:34:44 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068894756 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068894872 1. It is so that the submarine will not get crushed and observations can be made through the submarine

2. Strength, durability, sturdy]]> 2022-02-28 05:34:52 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068894872 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068895314 surface area of object and amount of force applied 
the back of the shoe has the least surface area in contact with the ground so the most pressure is exerted there
wearing high heeled shoes for a long time will cause pain in the feet as there is alot of pressure. but when retracted, the area in contact of ground increases, thus less pressure is exerted on one point of the feet ]]> 2022-02-28 05:35:18 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068895314 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068896057 1) submarines must be built to withstand water pressure to prevent it from collapsing or breaking as the water pressure increases when the depth increases
2) strength]]> 2022-02-28 05:36:01 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068896057 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068896950 1) When the patient uses the straw to drink, the air pressure inside the straw decreases and becomes lower than the atmospheric pressure surrounding the straw. The higher atmospheric pressure outside the straw then pushes the water up the straw and into the patient’s mouth

2) The liquid in the cup cannot move up the straw as the atmospheric pressure and the pressure inside the straw is the same.]]> 2022-02-28 05:37:01 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068896950 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897454 When someone drink from straw air pressure is higher than surrounding.

The air escape from straw]]> 2022-02-28 05:37:33 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897454 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897550 a) effect of force exerted on an object 
    the area of contact affects the pressure exerted by an object

(c) the heel, which has a very small area of contact, exerts a very high pressure on the floor. thus the heel exerted the greatest pressure

2) lesser pressure is exerted on the floor]]> 2022-02-28 05:37:39 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897550 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897621 1a) area in contact & force
b) the heel
c) the lesser the area of contact, the higher the pressure
2) it helps with users having sore feet from wearing high heels all day

]]> 2022-02-28 05:37:42 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897621 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897657 1. Decrease in air pressure in the straw
2. when the patient suck the air out for the liquid to go in more air enters through the hole and thus the liquid does not move up the straw]]> 2022-02-28 05:37:45 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897657 https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897745 1(a) Force/weight and area of contact
(b) The pressure is at the heels
(c) The smaller the area of contact, the more pressure.
2 When user feels discomfort wearing the high heel, they can change so there is less pressure, thus they won’t feel discomfort. ]]> 2022-02-28 05:37:51 UTC https://padlet.com/huayi/1nnafxlqsv6rqthg/wish/2068897745