Explanation:
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1-atomic number: the atomic number is the number of protons that the atom has
2-mass number: is the amount of protons plus the amount of neutrons in the atom
3-atomic weight: average of the masses of an atom per 1/12 of the mass of carbon
4-isotope: it is the same element that has the same number of protons but a different number of neutrons
5-natural abundance: measures the amount of isotopes of an element in nature
6-unit of atomic mass: (uma) is a unit that is equivalent to 1/12 of the carbon atom
Ruff's image is 50m behind the mirror surface and the image is also 3m tall.
This is because it is a plane mirror.
Answer:
The correct answer is 231 Mpa i.e option a.
Explanation:
using the equation of torsion we Have
where,
= shear stress at a distance 'r' from the center
T = is the applied torque
= polar moment of inertia of the section
r = radial distance from the center
Thus we can see that if a point is located at center i.e r = 0 there will be no shearing stresses at the center due to torque.
We know that in case of a circular section the maximum shearing stresses due to a shear force occurs at the center and equals
Applying values we get
