State the law of conservatio t, cpe;bh(oh.n of electric charge.

  Is it possible for two negative charges to attrerd145dl 3gczact each other?

  Is it possible for a positi(j0 b 0lfign,fve and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the 9re09(ew13z.jw5e ydamzabh glass rod acquires a ha ymrjwez3db1.az (9 e9 we50positive charge and the silk

  A proton carries a

  The model of the atom show d.fw-d ne7 kg()s0dths a

  A neutral atom always haskxoiioyv. *c;mvma/ n 1yv/,1

  An atom has more electrons than protons. The atoy+iolath 038t;ly4 f fbk-mi:m is

  Materials in which the el;.a2 emslhg/l ectrons are bound very tightly to the nuclei are referreela m/;2l.g hsd to as

  Materials in which the electrons a68b e+ o (vwsnib)j(vare bound very loosely to the nuclei and can move about freely within the material arba+b()(v8jwn v o6s eie referred to as

  A negatively charged rod is brought near one end of an uncp)8qsbzd7 o e.harged metal bar. The end of the metal bar far.dz)s oeb7pq 8thest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B adgc v.7dm sua15)j:iis neutral. They are placed near each other on an insulated tablea cd.5)m:1 asv gjidu7. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscqj0( 16tai epwb1s5csope positively?

  An originally neutral electro u;k)(i sc7js0p h5xiwscope is briefly touched with a positively charged glass rod. The electwcu ; s7k5ji)(xpsh0i roscope

  An originally neutralq165kvwk xaf j5 x3qb93hs8e+db50 f x0zfxlf electroscope is grounded briefly while a positively charged glass rod is held near it. After the f5xx zjkfb sxw+d q1vf505hk xql a9efb06833 glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves tr3+hu2o 0hg f 8xnss-separate. Then a negative object is brought near the electroscope, but does not touch ix ssn+hf0 hg2or3 -8utt. What happens to the leaves?

  A large negatively charged objectk0qw ylqlh7oe 0y(cw8vad 0.v)e 0(it is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is the final ch0wk(ciyl8(qo0)hl veay w.d0v 70etq arge on each ball?

  Charge is

  What are the units of the C9mhuw a(x 08yooulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separategnp5,3e*d2yf3 eypf md by a distance d. The first charge is larger in magnitude thanpgfedn5y* y3m3pe f,2 the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed raj4r g ;xu8b(near each other on an insulated table. 8br(au;xgj4r Which statement best describes the electrostatic force between them?

  Two charged objects gfieh: 6z+ :qnattract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between the 6::egn+zfi hqm

  Two charges are separated by a distance d a+kqewfndp* dff;;6 z29l2t ihnd exert mutual attractive forces of F on each other. If the charges are sep6t*p;;k d2 nfh2+ilw dz fq9efarated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. 9,xzg2at ivb9hz3 qoc() ej(h What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal toz3jbit(e (zq9 ha chvog9x2,)

  An electron and a proton are separated by a distance of 1.0 m. What 25- suvdu;gj4byhip1(5cv+api /s erhappens to the magnitude of the force on the proton se1gyp2+iuvd- iu( bva/r jsh545p c; if a second electron is placed next to the first electron?

  An electron and a proton arv oq-wkosa9 0;2 i,aq1t g9bsne separated by a distance of 1.0 m. What happens to the magnitude of thsqqk ,g9 as1-;wvbita9n0 2ooe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happh+:vxj+or w b1ukd(- wens to the size of the force on the proton if the el +v:wub1d oh+k(-rxwjectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the5v1isil;yp i7 center of a square. When a second point charge of -Q is placed at one of the square's corners, 1isyiiv;75l pit is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the cv cyhy786f lrxrd 6buc(1w(b;t d2osh x7w(;lentroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an el dtu67;(w2;cx1r(b sv olchxw7 8y fybhr (d6lectrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is k/td b+jv8r0enot a vector?

  At twice the distance from a point charge, dhacjkv6 981ethe strength of the electric field

  Is it possible to have a zero eluh m -(s+gf(rfhn hk) jcl2d,2ectric field value between a negative and positive charge ) lfhd((cfsgk, 2+nr-m2jhuhalong the line joining the two charges?

  Is it possible to have a zero electric field vil-upjj/)ty 1hl ss-1alue between two positive charges along the line joining the two charlu-1-shit / plsy1jj)ges?

  Electric field lines near psitive point cha7mxi;k+z )m:l :4hqzjobv;ssrges

  The electric field showuvu zdt0l 26c(4xulw ,n

  Can electric field line/ui7jded5wy b.t hbo6ck,: a 0s intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforf my7 (phj k7wh8kkl/2xx3fu-o f3oszyem3 + ;m electric field. Give a statement concerning fofp/x h7y- mkx8;huos 23mk+w337ykj f(zlethe electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each,ik nrp8sq-50dv ocf 8 given the same charge, the electricfi8os8nc0p, d-5 rvqk field (E) midway between the center and the surface is

  A cubic block of aluminum rests ocje:1 r:a/ mjjn a wooden table in a region where a uniform electric field is directed straight upward. What can be saij1e::c /rmajjd concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n(8z zy; xuvo+pn36qrz ear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is (qt,+;xvy fl n4:v*t0 waggi 1taow 1egrounded. As compared to the case without the hollow sphea(g,1ye o*a+wi ; t:v 4qttvf0n1xglwre, the electric field at a point directly above the hollow sphere has

State three properties of conductors in staetl w (eugci biofd55q(tkb(;e) :.;h2 -axuu tic equilibrium.

State Gauss's law.

  The charge carried by one electron isl, hywv2en 8j: $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mC. How many mocz )/byst .-ycre protons than electrst-bcy)zc /. yons does this piece of plastic have?

  What is the charge on 1 kxwo,cx;h .y :/amg (9fl cuog2g of protons?

  An atomic nucleus has a charge ofrjb hl z */ofed;5,-le $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge values of knsbe e l9-iwze4. *;b2.0 and -4.0 mC, respectively.-b9 b;wne z seek*li4. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the5a 8je(-j *i4zj f lpujjd2mj1 force between them is 1.0 N. What is the magnitude of the secondj4li5jedj - fpj8zaj2u1m j( * charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theys af2h(kd8 nzdl*nc c ,3(nr*f?

  The force between a hu8gvt :2h:torxz 3f,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. -pa 57.mgymdx 3.riur ;bk 3khIf they are moved to a new separation ;myxi k7uh.p5k.b3rar -mg3dof 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cx k(ip njg20,f3vbo uia 9e*h(aw)/kcharge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which nh 9b*p )ck,02(g3jwiaaix v/kfue( oacts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +(ko mb08w;/nunrc+ zq2.0 mC is placed at the origi/ ork;n m8 z+qc0(bnuwn, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1sgby7;i8 v/ bp = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge7s8b/ vgbp;y i?

  A point charge of +Q is placed at the center of a square, and a sec uchlums6sy:5s80-qo0p(mb iond point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left cop8bls0 u(s0y-5ohsmm:q icu 6rner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC io g a)la qviy16rl u/)*bjn7sk/1 3zf cx:u*zks at (0, 0az*v/fj:lg* sr61u n/kxk a3 )ou7)lb1i cyqz). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m/ vd4ashr +f+ik(zfj5, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0fh+ 5d zfvs(ji/+rka4 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilater- 3.ksxph: qiaal triangle which measures 30 cm on a side. What is the maghk-.q3six:a pnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 p;ivsjoa:m ,qui2y (( cl,x(s m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostativq(j; (i 2ps usoxcm,a: ,iy(lc force acting on it would be zero?

  A +3.0-C charge is at the origz7 v/sdpa;pwyv bhna/6688hbk36e twin and a +9.0-C charge is at x = 4.0 m. Where on the x6/wn6h/7 6pswdpz8;h83kb evatb y av-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is po2py6r*j ,v+ nv1cqv v/k az6ilaced at x = 2a. Where can a thir62ocvrja+ n*z61 /qpi v vk,yvd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. fnzkn:i iq0 63ftx dfs*u06x9 A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the force of gras4f/to2 cee*v./ nnf qvity by the attraction of a fixed proton some distance above it. How far above theon2tee. fcq/n/4*vs f electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tbpy8)yh8e tl8 1y mpkz tdk v5ec61y.9hreads which key ldhk vet6p)918yc. mpy5 tyz818b are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has ao+zri q2dx *3l charge of +40e. What is the magnitude of the electric field at a distance r+3*doiqz 2lx of 1.0 m from the nucleus?

  What are the magnitude and direction ( u927hkils8e4fk b0y0tcrfo of the electric field at a distance of 1.50 m from a 50.0-nC chargk794f0eh ltyk2ibro u sfc0 (8e?

  A 5.0-C charge is 10 m from a small test chargevvm : ikj53wf6. What is the magnitude of the electric field at the lwk63 fjvi:5v mocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thek7o vu a:lcc8n s*vyb9x8,wx+ electrinv9 oxy: *,sw7xkc v8 +ba8uclc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fe;)eo obeeojz3 h.3; ;j r4exforce experienced by a 1.0 nC charge placed at the locatio h;4ejoezejr )3f; ;oexob3.en of the test charge?

  Two point charges each have a value of 3.0 C and arq7bpx (9/f cm 4j,obope separated by a distance of 4.0 m. What is the electric field at a point midway bep/4of jxc7mq bp(b,9o tween the two charges?

  A 5.0-mC charge is placed at the 0 cmjyz78;;wcp2 q3) k3gd7fefnwhibxz1 mark of a meter stick and a -4.0 mC charge is placed at the 50y328cejh7qz wdxf 3gwbpf ;1i7n zk;) cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charge+ad+ ;vq a ncm3s.vcr4 is pm +;ac3v dacvsq 4n+.rlaced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are nue-g tv 5gw)d(5l r;oplaced at x = 0 and x = 0.20 m. What is the magnitude of the elect5)n5; g gwt(do-rv eluric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Th)xl dzkc8zw(jl dp xn d3/b,9(e last dk)b/3wld(d9j(l8xnx c pz ,zcorner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on ai/47m 93vcuk-igp kvq side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 v3c 4pgkq-/v7uk i9m imC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a ke lds( fzck, lt.f .g-6w75bfcharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric field?gf f(dk6b.5we kl- tz f.sl,7c

  A particle with a charge of 4.0 m 8 b axzjchmq(a2 lqqv(6*l2*(9pxfqkC has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an electric field of 60s*0ifhkzki l ) tgotfi,w+9+( 00 N/C pointing downward. What charge mus*+lhigks9)(zf o ,0iif+w kt tt be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chgqc d87-jlxf))b9bri arge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspe qdc)7 ig)lr9j8- bfbxnded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radi(os x /c:p n+;z1myhb+ddu+rvus 10 cm carries a charge of +2.0 mC. What is the magnitude of the electrics+u r(+xcy+; m /dn1v pdbhoz: field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge o(( / 3vn( fx4r te;vltl6qw4ef0 rjtlvf 3.0 mC. What is the electric field 6.0 cm from the center ontlet(vfrl ( v t0;ejxv(r /44fw 3ql6f the sphere?