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Why water potential always negative in uptake of water in plant?
To follow the Law of diffusion.
What is Fick's law?
Ficks laws (note that there are two of them) are:Most people are concerned with Fick's first law which relates the diffusive flux to the concentration under the assumption of steady state:R=D X A Dp / dR=the rate of diffusionD=diffusion coefficient, which is a characteristic of the medium and varies exponentially with temperatureA=the surface areaand dC/dx Is the concentration gradient over the diffusion distanceFick's first law suggests that the rate of diffusion in a given direction across and exchange surface:1. is directly proportional to the concentration gradient- the steeper the concentration gradient, the faster the rate of diffusion2. is directly proportional to the surface area- the greater the surface area of a membrane through which diffusion is taking place, the faster the rate of diffusion this is one of the factors which limits cellsize.3. is inversely proportional to the distance- the rate of diffusion decreases rapidly with distance. diffusion is thus effective only over short distances. this limits cell size.Fick's second law predicts how diffusion causes the concentration to change with time. It is a partial differential equation which, within the character limitations of Wikianswers, the second law is:δφ/δt = ▼·(D▼φ)whereδ is being used as the symbol for partial differentialφ is the concentration in dimensions of [(amount of substance) length−3]t is time· is the "dot product"▼ is the del or gradient operatorD is is the diffusion coefficient in dimensions of [length2 time−1]Note that when φ is at steady state, this equation reduces to Fick's first law.
Diffusion of AIDS is an example of which type of diffusion?
Diffusion of AIDS is an example of contagious diffusion, where the disease spreads through direct or indirect contact between individuals.
Explain Fick's First Law of Diffusion?
Fick's First Law of Diffusion deals with diffusive flux. The law postulates that flux goes from high to low areas of concentration with a magnitude that is proportionate to its spatial derivative.
Is simple diffusion the net diffusion of a solvent?
no
Who Developed law of diffusion?
Graham!
Diffusion at high temperatures?
According to Hook's Law: Rate of Diffusion is directly proportional to (Conc. Gradient x Temperature) / Diffusion distance
What is normatic diffusion in human resource management industries?
I think someone meant to say "nomadic" diffusion which is part of the Law of Diffusion and innovation in anthropology and geography.
State the Graham's law?
graham's law of diffusion states that the rate of diffusion of a gas is inversely proportional to the square root of its density provided the temperature and pressure remain constant
What is grahams law of diffusion?
graham's law of diffusion states that the rates of which gases diffuse at the same temperature are inversely proportional to the square roots of their densities.
Why you take square root in grahams law of diffusion?
for simplicity
How do you calculate diffusion in a given system?
Diffusion in a system can be calculated using Fick's law of diffusion, which states that the rate of diffusion is proportional to the concentration gradient. The formula for calculating diffusion is D (C2 - C1) / (X2 - X1), where D is the diffusion coefficient, C is the concentration, and X is the distance.
What is the definition of Graham's law of diffusion?
This law relates the rate at which a gas diffuses or effuses to the type of molecule in the gas. This rate of diffusion of a gas is inversely proportional to the square root of it's molecular mass.
Which gas law explains why there is much carbon dioxide exchanged between alveoli as there is oxygen exchanged?
diffusion
Why water potential always negative in uptake of water in plant?
To follow the Law of diffusion.
What scientific conclusion did thomas graham make?
The law of diffusion. It states that " at constant temperature, the rate of diffusion of any gas is inversely proportional to the square root of its density".
Is the Cascade storage system based on diffusion (or other physical's law)?
The Cascade storage system is based on other physical's laws. This can do multi dimensional Gaussian diffusion processes.
