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Dont really understand what youre asking but switches can be used to turn things on and off.
Newton's second law, which states that the force F acting on a body is equal to the mass m of the body multiplied by the acceleration a of its centre of mass, F = ma, is the basic equation of motion in classical mechanics.
Answer:
28.75 %
Explanation:
porosity is the term which is defined as the volume of voids present in the soil to the total volume of the soil.
it is denote by n where
A porous material is one which contain pores, if a material is porous it will allow the water to pass through it.
the porosity of the gravel sample is 28.75%
Answer:
B. The ability of the solute molecules only to absorb the energy of light (photons) at a specific wavelength.
Explanation:
Spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength. In case of a solution, both, solute and solvent would absorb the energy on an specific lenghtwave of light if they have a absortion coefficient diffrent of 0. The solvent could absorb energy of light, but it´s not typical, for example water does not absorb light in any lenghtwave. Therefore, for practical uses, we consider that only the solute absorbes, and it case the solvent does, that should be taken into account for the solute concentration calculation.