What is the correct electronic configuration for the ground state sodium atom, which has 11 electrons?

A) 1s12s23p62s2
B) 1s22s22p63s2
C) 1s12s22p6
D) 1s22s13p62s2
E) 1s22s22p63s1


E

Physics & Space Science

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A self-sustained chain reaction occurs when the reproduction constant, K, is equal to

a. 3.0 b. 2.0 c. 2.5 d. 1.0 e. 0.5

Physics & Space Science

If the polarizing angle for cubic zirconia (zirconium oxide) is 65.6°, what is the index of refraction of the material?

a. 1.84 b. 2.00 c. 2.20 d. 2.43 e. 1.17

Physics & Space Science

By what mechanism does solar energy reach the Sun's photosphere from the layer just underneath it?

A) differentiation B) ionization C) radiation D) convection E) conduction

Physics & Space Science

Motional Emf: An electromagnetic flowmeter is useful when it is desirable not to interrupt the system in which the fluid is flowing (such as the blood in an artery during heart surgery). Such a device is illustrated in the figure. The conducting fluid moves with speed v in a tube of diameter d. Perpendicular to this tube is a magnetic field B. A voltage V is induced between opposite sides of the tube due to the motion of the conducting fluid in the magnetic field. For a certain case, B = 0.120 T, d = 1.2 cm, and the measured voltage is 10-3 = 2.88 mV. Determine the speed of the fluid. 

A. 2.0 m/s B. 11 m/s C. 0.075 m/s D. 1.1 m/s E. 750 m/s

Physics & Space Science