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

Physics & Space Science

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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

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science

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

Physics & Space Science