Alkali metals have how many electrons past the noble gas configuration?
A. 1
B. 2
C. 3
D. 4
E. 5
A. 1
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Which of the Galilean moons is essentially a dirty, icy rock?
a. Titan b. Io c. Ganymede d. Phoebe e. Callisto
Transformers: In an ideal transformer, how many turns are necessary in a 110-V primary if the 24-V secondary has 100 turns?
A. 458 B. 240 C. 110 D. 22
The eyepiece of a compound microscope has a focal length of 2.50 cm and the objective has a focal length of 1.60 cm
The two lenses are separated by 15.0 cm. The microscope is used by a person with normal eyes (near point at 25 cm). What is the angular magnification of the microscope? A) 78 x B) 94 x C) 195 x D) 234 x E) 125 x
According to Lenz's law, the direction of an induced current in a conductor will be that which tends to produce which of the following effects?
A) enhance the effect which produces it B) produce a greater heating effect C) produce the greatest voltage D) produce the smallest voltage E) oppose the effect which produces it