Given data:
● Angular velocity of the turntable ω = 33 rev/min
Therefore,
ω = 33 rev/min
ω = 33rev/min × 2π rad/rev × 1 min/60 sec = 3.45 rad/s
● The distance of the watermelon seed from the axis of rotation r = 7.8 cm = 0.078 m
● μs = the coefficient of static friction
Section a:
The seed is undergoes circular motion and it is been effected by centripetal acceleration.
ac = rω^2
ac = 0.078 × 3.45^2
ac = 0.9284 m/s^2
Therefore,
the centripetal acceleration of the seed is 9.274 m/s^2
Section b:
If the seed is observed not to slip at the course of the circular motion, then the supplied frictional force given by the seed and surface of turntable would at least be equivalent to the centripetal force working on the seed.
Centripetal Force = Frictional Force
mrω^2 = μsmg
μs = rω^2 /g
μs = 0.078 × 3.45^2
------------
9.81
μs = 0.09464
Thus,
the coefficient of static friction is 0.09464.
The difference between the bonds that compose the hydrophobic hydrocarbon tail of a lipid molecule versus the forces that drive lipid droplet formation (the hydrophobic effect) is hydrophobic hydrogen tail of a lipid molecule is the non water loving lipid whereas hydrophobic is the effect which is known as non water loving effect.
<h3>What is hydrophilic meant?</h3>
If a molecule is the “water-loving”, it is known as the ‘hydrophile’ (noun) that possesses a hydrophilic nature. In the contrast, if a molecule doesn’t like water (h2o) i.e. repel the water, it is known as the ‘hydrophobic‘. The terms hydrophilic and the hydrophobic are used to describe the molecules or the substances based on how they react to the water molecules. The degree or the extent to which a molecule or a surface attracts water is known as the ‘hydrophilicity‘ of that molecule. Some of most common examples of the hydrophilic substances are sugar, salt, starch, and cellulose.
The tail of the phospholipid is the hydrophobic because it is composed of carbon and hydrogen atoms. If a molecule is made up of mostly of carbon and hydrogen atoms, it is a nonpolar or hydrophobic molecule. Carbon and hydrogen have the similar electronegativities, so they share the electrons equally resulting in the nonpolar bond. Because the tail of the phospholipid is the nonpolar, it does not interact with the water, whereas, Hydrophobic effect is just a tendency of non-polar molecules to come together so that they can avoid the water from their surface area as much as they can.
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<span>The sticky ends have to match so ligase can do its job.</span>
The strands of DNA are wrapped around histone proteins. The packaging is advanced further to the secondary and tertiary structure packaging level. In the end, the entire structure is completely packed in the form of a chromosome to fit within the nucleus of a single cell.
