Answer:
towards Andrew
Explanation:
The direction in which the desk will move would be towards Andrew.
This is a simple case of resultant force. If both Michael and Andrew had pushed the desk together across the classroom, the resultant force would have been the addition of their individual's applied forces - neglecting any other extraneous forces. However, since they decided to push against each other, the resultant force would the subtraction of their individual forces and the desk will move towards the person with who applied the lower forces out of the two.
<em>Since Michael applied force was 30 N and that of Andrew was 28 N, the resultant force would therefore be 2 N in the direction of Andrew. In other words, </em><em>the desk would move towards Andrew.</em>
Answer: Creo que es B
Explanation:
P.S(eso fue muy difícil. Lo siento mucho si se equivoca.)
The correct answer is option C, that is, in the thylakoid membrane of the chloroplast.
Chlorophyll is situated in a clustered form in the thylakoid membrane of the organelles known as chloroplasts. Inside the thylakoid membrane, the chlorophyll molecule is enclosed by the proteins, which forms the complexes known as photosystems that mediate the light energy via the chlorophyll.
Hydrogen is in a state of matter as a gaseous form. (so the answer is gas)
Chromatography is a simple technique in principle, it remains the most important method for the separation of mixtures into its components. It is quite versatile for it can be used to separate mixtures of solids.
Explanation:
- The two elements of chromatography are the stationary phase and the mobile phase. There are many choices of stationary phases, some being alumina, silica, and even paper. The mobile phase, in liquid chromatography, can also vary. It is often either a solvent or a mixture of solvents and is often referred to as the eluant.
- A careful choice of eluting solvent helps to make the separation more successful. The mixture is placed on the stationary phase. The eluant passes over the mixture and continues to pass through the stationary phase carrying along the components of the mixture.
- Chromatography is used in industrial processes to purify chemicals, test for trace amounts of substances, separate chiral compounds and test products for quality control. Chromatography is the physical process by which complex mixtures are separated or analyzed.
- Chromatography is based on the principle where molecules in mixture applied onto the surface or into the solid, and fluid stationary phase (stable phase) is separating from each other while moving with the aid of a mobile phase
