Answer:
The Moon has a smaller mass than the Earth and so the pull of gravity by the moon on an object is smaller than on the earth. The moon has a smaller gravitational field strength. On the Moon, g = 1.6 N/kg.
Explanation:
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The incorporation of valinomycin, a neutral antibiotic, into a polyvinyl chloride membrane allows for the manufacture of an ion-selective electrode that is highly selective for potassium.
<h3>How Valinomycin Ionophores Enter and Transport K+ across Model Lipid Bilayer Membranes?</h3>
- A biomimetic lipid membrane attached to the surface of the gold electrode contained the cyclic peptide valinomycin.
- The ionophore characteristics of the peptide were investigated using electrochemical impedance spectroscopy, and the conformation and orientation of the antibiotic valinomycin within the membrane were identified using polarization modulation infrared reflection absorption spectroscopy.
- By forming a complex with potassium ions and an ion pair with a counter anion, valinomycin transports ions across the membrane, and the combination of these two techniques revealed novel information about the ionophore mechanism.
- The ion pair is located inside the hydrophobic portion of the membrane and makes a little angle of around 22° with the surface normal.
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Correct answer: B. oxygen
A deuterium nucleus consists of one proton and one neutron. The quark composition of a deuterium nucleus is
A- 2 up quarks and one down quark
B- 2 up quarks and 4 down quarks
C- 3 up quarks and 3 down quarks
D -4 up quarks and 2 down quarks
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. Thus, option "C" is correct.
<h3>What is the composition of quark?</h3>
The quark composition of a deuterium nucleus is 3 up quarks and 3 down quarks. The overall charge of the deuterium nucleus is +1. Comparing the given overall charge to the chart of the Particles of the Standard Model, the overall charge can be determined from the combinations of the choices.
Thus, option "C" is correct.
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