Density And Pressure
Bayani Gaba-gaba
A drawing pin and an elephant's foot can push with very different forces, yet the pin is the one that goes through the board. The difference is not the force at all, it is how much area that force is spread over.
In this lesson you will learn how to calculate density and pressure, why a sharp point concentrates a force so effectively, and why the pressure at a point inside a still liquid or gas pushes equally hard in every direction.
Manufura
- Know and use the relationship between pressure, force and area: p = F/A
- Understand how the pressure at a point in a gas or liquid at rest acts equally in all directions
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Nazarin Darasi
Barka da kammala darasi akan Density And Pressure. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- The equation for pressure is: A) p = F x A B) p = F / A C) p = A / F D) p = F + A Answer: B
- The density of a material is calculated using: A) volume / mass B) mass x volume C) mass / volume D) mass + volume Answer: C
- A force of 200 N acts on an area of 0.50 m squared. The pressure is: A) 100 Pa B) 200 Pa C) 400 Pa D) 0.0025 Pa Answer: C
- The pressure at a point in a liquid at rest: A) Acts only downwards B) Acts only sideways C) Acts equally in all directions D) Acts only on the container base Answer: C
- A block of mass 500 g has a volume of 250 cm cubed. Its density is: A) 0.5 g/cm cubed B) 2 g/cm cubed C) 125 g/cm cubed D) 750 g/cm cubed Answer: B
Yi aikin wadannan tambayoyi a cikin manhaja
Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Gas Pressure
Define the property of pressure
"Chemistry: Gas Pressure" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/9-1-gas-pressure. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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