Which one of the following choices is not one of Kirchoff's rules?
a) junction rule
b) emf rule
c) loop rule
d) slide rule
e) resistance rule
Ans: d) slide rule
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A 2.00 kg mass is located at (4.00 m, 0.00 m, 0.00 m) and a 4.00 kg mass is located at (0.00 m, 3.00 m,0.00 m). If this system of masses rotated about the Z-axis perpendicular to the X-Y plane, then the moment of inertia of this system is
A. 50 kg 
B. 55 kg
C. 58 kg
D. 62 kg
E. 68 kg
Newton found that gravity varied with the ________ of the distance between the two bodies pulling on each other
Fill in the blank(s) with correct word
A steady horizontal force lasting for 2.1 s gives a 1.25 kg object an acceleration of 3.2 m/s2 on a frictionless table. What impulse does this force give to the object?
A) 11 kg ? m/s B) 26 kg ? m/s C) 2.6 kg ? m/s D) 8.4 kg ? m/s
An astronaut traveling with a speed v = 0.90c holds a meterstick in his hand. If he measures its length, he will obtain a value of
a. 1.0 m b. 2.3 m c. 0.19 m d. 0.43 m e. 0.81 m