An electron in a hydrogen atom has orbital quantum number l = 7. How many possible values of the magnetic quantum number ml could it have?
A) 6
B) 7
C) 15
D) 33
E) 98
C
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Beam ACB has a pin support at A and is supported at C by a steel column with a square cross section (E 5 190 GPa, b 5 42 mm) and height L 5 5.25 m. The column is pinned at C and fixed at D. The column must resist a load Q at B with a factor of safety of 2.0 with respect to the critical load. The maximum permissible value of Q is approximately:
(A) 3.0 kN
(B) 6.0 kN
(C) 9.4 kN
(D) 10.1 kN
On a Hertzsprung-Russell diagram, where would we find stars that are cool and dim?
A) upper right B) lower right C) upper left D) lower left
A pulse is described by 
in SI units. What is the velocity of the pulse?
A. 3 m/s in the +x direction B. 2 m/s in the ?x direction C. 2 m/s in the +x direction D. 4 m/s in the ?x direction E. 4 m/s in the +x direction
Energy is released during a nuclear reaction due to a conversion between mass and energy. Mass is not conserved. The initial and final amounts are different. If a total of 1.0 gram of mass is "missing", how much energy has been released?
a. 9.0 × 10^11 J b. 9.0 × 10^17 J c. 9.0 × 10^15 J d. 9.0 × 10^13 J e. 9.0 × 10^16 J