of the sphericity F s‚ which is independent of particle size. The sphericity of a particle is the ratio of the surface-volume ratio of a sphere with equal volume as the particle and the surface-volume ratio of the particle. For a spherical particle of diameter D p‚ F s =1; for a non-spherical particle‚ the sphericity is defined as Dp: equivalent diameter of particle Sp: surface area of one particle vp: volume of one particle The equivalent diameter is sometimes defined as the diameter of
Premium Arithmetic mean Volume Area
osmosis rate on different surface areas‚ depending on different types of water solution An investigation showing the effect of surface area on osmosis rate‚ including some different types of water concentration. Osmosis is a type of passive (not requiring energy) transport of water molecules across partially permeable membrane‚ from an area of high water concentration into area of low water concentration. But how does surface area affect rate of osmosis? Surface area plays important role
Premium Osmosis Semipermeable membrane Diffusion
effect of the surface area to volume ratio on the rate evaporation of water in different sized containers. By measuring the time it takes for the whole amount of water to evaporate‚ a conclusion can be made about the validity of the surface to volume ratio in regards to the biological process of diffusion. Research Question: What is the effect of the surface area to volume ratio on the evaporation of water? Variables: - Independent: o Surface area in cm2 of the top most surface of water in the
Premium Area Evaporation Boiling point
at least have to pick r and h such that pi r^2 h = 355. That means h = 355 / (pi r^2). The surface area of a cylinder is the top (pi r^2) plus the bottom (also pi r^2) times the lateral side (2 pi r h). So the total surface area is 2 pi r^2 + 2 pi r^2 + 2pi r h‚ or 4 pi r^2 + 2 pi r h. Substitute h = 355 / (pi r^2) into this to get the surface area in terms of just r. Now that you have the surface area in terms of just r‚ you can find the value of r that minimizes this by taking the derivative
Premium Surface area Volume Area
12. Provide a description of a cell surface specialization. A cell surface specialization can be defined as an extension of the cell surface which performs a specific function for a larger organ or tissue. Examples of cell surface specializations include microvilli‚ cilia‚ stereocilia‚ and goblet cells. Microvilli can be described as tiny finger-like folds made of microfilaments in the cell membrane‚ and functions to increase surface area for absorption. Cilia are longer‚ more hair-like projections
Premium
| | | | | | | | | The Erosion Process1. Water. Erosion from water typically occurs in the following ways. a. Raindrop Splash and Sheet Erosion. The first step in the erosion process begins as raindrops impact the soil surface. Raindrops typically fall with a velocity of 20-30 feet per second. The energy of these impacts are sufficient to displace soil particles as high as two feet vertically. In addition‚ the impact of a rainfall on a bare soil can compact the upper layer of
Premium Erosion Geomorphology Soil
Properties Henry Hartono Gunawan 1 INTRODUCTION The use of Greywater for landscaping irrigations is becoming common as Western Australia is experiencing the water restriction due to the current drought condition and critically low level surface water storage. Hence‚ the reuse of Greywater can utilise the on-site resource‚ conserve the water efficiently‚ and reduce the load on wastewater disposal system. As there is still lack of information regarding the effect of surfactants‚ which are
Premium Water PH
Effects of Agriculture on the Environment Introduction: Agriculture has changed dramatically‚ especially since the end of World War II. Food and fibre productivity rose due to new technologies‚ mechanization‚ increased chemical use‚ specialization and government policies that favoured maximizing production. These changes allowed fewer farmers with reduced labour demands to produce the majority of the food and fibre. Humans‚ like all other species‚ exploit their surroundings for the resources they
Premium Soil Water Agriculture
SOIL Soil is formed at a rate of only 1 cm every 100 to 400 years and it takes 3000 to 12000 years to build enough soil to form productive land. This means that soil is a nonrenewable resource and once destroyed it is gone forever. If we disregard this‚ a time will come when there would not be enough soil left to sustain life on earth‚ because the soil is a necessary growth medium for plants‚ a home for certain insects and animals‚ as well as a medium from which we get minerals‚ such as gold.
Premium Erosion Soil Surface runoff
Business Challenge #6: To develop the best scratch resistant coating in the world for ophthalmic lenses [Titan] Background The ophthalmic lenses (spectacle lenses) consist of some base material (substrate) like CR 39‚ Polycarbonate‚ Trivex and a surface treatment is given to them to increase their hardness. Currently‚ there are 2 processes of applying this coating‚ i.e. Dip coating and Spin coating. The current scratch resistant (Hard) coating on plastic and polycarbonate lenses available in the
Premium Hardness Optics Time