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physics_6c_su08_exam_1_solutions

# physics_6c_su08_exam_1_solutions - )3 2““ V aw Three...

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Unformatted text preview: )3 2““ V aw Three point charges are ﬁxed to corners of a square as shown below. +15.0 uC _20_0 “C 2.00 m +10.0 uC 2.00 m a) Find the electrostatic ﬁeld (magnitude and direction) at the location of the +10.0 uC charge caused by the other two charges and the electrostatic force (magnitude and direction) on the +l0.0 uC charge. b) Find the electrostatic potential at the location of the +10.0 uC charge caused by the other two charges and the electrostatic potential energy of the +10.0 uC charge. 6" rt: . t K 1,, 3" W3 > y W; I, , I ‘ ﬂ” if: I "t: 23M~~«”*""""An electrically neutral dipole is placed in an external ﬁeld. For each situation (a) through (d) state if the force is zero or not, and if the torque is zero or not. If the force is non-zero, state its direction (up, down, left, right). If the torques is non- zero state its direction (clockwise or counter-clockwise). l k ‘\ An electron (mass 9.11 x 10'31 kg) enters the region between two char6ged plates as shown below with an initial horizontal velocity of 3.00 x 10 m/s. What direction is the electron deﬂected? 3) b) You Wish to deﬂect the electron through an angle of 30.0°. What vertical velocity must be imparted to the electron? 0) d) If L is 1.00 cm, what is the required electric ﬁeld E? What is the required potential difference between the plates? /‘ ‘ szai ) L259 i if :5; m *7: <2 i -\ r a W _ {cg «Q V .«v V ‘5 ‘A " “ w f g xii: m ‘ Mid ‘ W 2 " E“ W Mm “"5"; V? W l' “’1‘? “‘55: V E? g ‘ in e’t/ if L. h“ J {J I 1., #5 F, a; a Q iiwig”glg¢‘ x?f?§"“30 Mfg ’{§.9{3W‘3§‘&§ Li, yngkivwaw Léﬁlkgovkﬁﬁw 53 a: ﬁﬁg 2.x éés’a A E I m 3 s», , v: ‘1: 3) it‘w ‘9 ﬁg ...
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