According to the quantum mechanical model of the hydrogen atom, if the principal quantum number is n, how many different orbital angular momentum quantum numbers are permitted?
A) n/2 B) 2n C) n D) 3n E) 4n
C
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All of the stars we see at night with our unaided eyes are within
A) 10,000 light-years, which is a small portion of our galaxy. B) 100,000 light-years, which encompasses most all of our galaxy. C) 5 million light-years, which encompasses our local group. D) 14 billion light-years, which encompasses the observable universe.
A 100 gram glass container contains 250 grams of water at 
150 grams of water at 
is added to the aluminum container. What is the final temperature of the water and the aluminum? (specific heat of water 
specific heat of aluminum 
a. 37 
B. 31
C. 23
D. 17
E. 12
Force on a Wire: If a calculated quantity has units of 
, that quantity could be
A. an electric field. B. an electric potential. C. ?0. D. a magnetic field. E. a magnetic torque.
In a Young's experiment, the paths from the slits to a point on the screen differ in length, causing destructive interference at the point. Which of the following path difference would cause this destructive interference?
a. 5?/2 b. 3?/4 c. 4? d. None of the above.