A:(25 pts) Simple Harmonic Oscillator Prediction
An oscillator has mass m : 2199 and spring constant is k = 200N/m. Assume its position I at any time t
is given by 30.) : Acos(wt + gt). What is the angular velocity as? It has position I = +2.90m and velo
7. T wo Wires made of different materials have the same uniform current denSIty. They cam, 1h
same current only if:
their lengths are the same
. B)their cross-sectional areas are the same
C) both their lengths and cross-sectional areas are the same
D) th
A:(15 pts) Electric Potential and Potential Energy
Four equal charges of +10 each are placed on the corners of a square with sides of length a = 2m. What is
the total electrostatic potential energy U of the charges, if it is zero at innite separation? Wh
A:(2O pts) Coulombs Law
A particle with charge Q = e is at the origin. There are three other particles with charges Q1 : +2e,
Qg=+3e and Q3 = e. Their positions (any) are (A,U)1, (/1,ng and (0, Bl3, respectively. The distances are
A24 X 101mm and 8:3 x