Question )
a)
Determine the I-beam's cross-sectional moment of inertia Ix about the horizontal x axis passing through the centroid.
options:
a |
1.42 x 106 mm4 |
b |
5.3 x 107 mm4 |
c |
2.5 x 106 mm4 |
d |
1.25 x 106 mm4 |
e |
4700 mm4 |
b)
Determine the I-beam's cross-sectional moment of inertia Iy about the vertical y axis passing through the centroid.
options:
a |
5.3 x 107 mm4 |
b |
2.5 x 106 mm4 |
c |
4.10 x 106 mm4 |
d |
1.29 x 107 mm4 |
e |
1.25 x 106 mm4 |
c)
What is the atomic number of an atom?
options:
a |
It is the total number of electrons, protons, and neutrons in the atom. |
b |
It is the total charge of the atom. |
c |
It is the total number of protons and neutrons in the atom. |
d |
It is the number of protons in the atom. |
e |
It is the total charge of the nucleus. |
d)
A positively charged insulated rod is brought close to an object that is suspended by a string. If the object is shifted towards the rod we can conclude:
options:
a |
The object is positively charge. |
b |
The object is an insulator. |
c |
The object is a conductor. |
d |
None of these answers are correct. |
e |
The object is negatively charged. |
e)
A small glass bead has been charged to +20 nC. An electron is placed 1.0 cm from the bead. What is the acceleration of the electron?
Question 25 options:
a |
1.7 x 1014 m/s2, directly toward the bead. |
b |
2.9 x 10-13 m/s2, directly toward the bead. |
c |
3.2 x 1017 m/s2, directly away from the bead. |
d |
3.2 x 1017 m/s2, directly toward the bead. |
e |
zero |
Provifing the solution of c and d ...
Question ) a) Determine the I-beam's cross-sectional moment of inertia Ix about the horizontal x axis...
Determine the beam's moment of inertia ly about the centroidal y axis. 15 mm 15 mm 50 mm X C 10 mm 50 mm 100 mm 100 mm a) ly 25.8 x 106 mm4 = b) ly 29.8 x 106 mm4 c) Iv = 21.8 x 100 mm4 d) 23.8 x 106 mm4 Determine the beam's moment of inertia ly about the centroidal y axis. 15 mm 15 mm 50 mm X C 10 mm 50 mm 100 mm 100...
Determine the distance to the centroid for the beam's cross sectional area; then determine the moment of inertia about the x' axis. Organize your final answers using the following format at the end of your calculation:
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Determine the moment of inertia of the beam's cross-sectional area about the x and y axis.
Determine the distance y to the centroid of the beam's cross- sectional area; then determine the moment of inertia about the x'-axis. Set up all calculations in a table form.
Determine the moment of inertia of the beam's cross sectional area about the centroidal x and y axes.