What particle carries the strong force?
A.) Graviton.
B.) W boson.
C.) Z boson.
D.) Gluon.
E.) Photon.
Ans: D.) Gluon.
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A brass rod of length L 5 0.75 m is twisted by torques T until the angle of rotation between the ends of the rod is 3.58. The allowable shear strain in the copper is 0.0005 rad. The maximum permissible diameter of the rod is approximately:
(A) 6.5 mm
(B) 8.6 mm
(C) 9.7 mm
(D) 12.3 mm
The discovered that the orbits of planets are ellipses.
What will be an ideal response?
What mechanism is most responsible for generating the internal heat of Io that drives the volcanic activity?
A) accretion B) radioactive decay C) differentiation D) tidal heating E) bombardment
Energy in Capacitors: When a 4-?F capacitor has a potential drop of 20 V across its plates, how much electric potential energy is stored in this capacitor?
A. 0.8 ?J B. 8 ?J C. 80 ?J D. 800 ?J E. 8000 ?J