State the law of conservatio.n ml r:) xfr+w,yrjhkk6cm/*n of electric charge.

  Is it possible for two negativ0l5bfx ;w305d :;m t exwivvale charges to attract each other?

  Is it possible for a positive and a negative c ;f;bnwu 3sox5harge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri *irf:e15pklh+ar9ajng the process the glass rod acquires a positive chaj1a5frlp:he*+k ira 9 rge and the silk

  A proton carries a

  The model of the atom yj (by10h wh/vr tf0*jshows a

  A neutral atom always v8;uk q;o5 dm*b1j meqn5imp)has

  An atom has more electrons than protons. Tt zpz)4bk podq1pw* /q6f8( r8(vp mjdhe atom is

  Materials in which the electrons are bound ver*apd o,) pmz/vy tightly to the nuclei are referred to )zp/ dap,o*vm as

  Materials in which the electrons are bound very loosely to the nuclei and la 2ayl h fblv+393k+-; pbu04jvqa bmcan move about freely within the material are refl bqhjya-va+va+pb9m 3 2 lu;l3fk04berred to as

  A negatively charged rod b+axmv)si,l qw*q,kufq53 * bis brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be c* +sqb q m a5f3xkw,)uvb,lq*iharged

  Sphere A carries a net positive charge, and sphere B is n ba- (f3olx,j pw+dqhz1zwg.(eutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wh,x bqp(oz-d. glfwjaz1 (w+3hich statement is correct?

  How can a negatively charged rod charge an egxn )cr2:8jfjlectroscope positively?

  An originally neutral electroscope is briefly touched with a poym5uf: .uhw y4sitively charged glass rod. The :5u.4mwyuh fy electroscope

  An originally neutral electrosc vg1 8r6c6nrxy9ri nge8 h:t/k+x.iycope is grounded briefly while a positively charged glass rod is he86ghv xc:nr ig /kx ynie6+ t1ry.9rc8ld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepedz) q,;od-ui e6yj6ldhp y+*arate. Then a negative object is brought near the electroscope, but does not touch it. What happens toddh )o6jydl+6iu -ee;,yqp*z the leaves?

  A large negatively charged object isgeo6v*z 9o;p1fc fi: t 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 be6*;vp9cfz 1itg:oof all touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb consqb5*h o4y6 heck d/63zi*b woetant $k$, which appears in Coulomb's law?

  Two charged objects are separated 8 p3se(:kl* lug;bnn ih*mw2b by a distance d. The first charge is larger in magnits p(mnln :h8we*; bu*b2 3kgliude than the second charge.

  Sphere A carries a netcy9f3lwz;2zz1b (0 k)g lwijb charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best descr czywi1; k(gwzb)b 2f3zj9l0libes the electrostatic force between them?

  Two charged objects attract ea): w3lu4i nrnach other with a certain force. If the charges on both object n43au) :lwirns are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exer,(;ajz.n w g5 humkz3hm)(wfwt mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, k g(. hmuzj53);hfzw wamnw(,what are the new mutual forces?

  Two charged objects attract each other witn pw,1ateq +x9rx9b wpdf+m 7+h a force F. What happens to the force between them if one charge is do +1e xd+,p7f9rb9mwqtxp w na+ubled, 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 to

  An electron and a proton are separated by a distance of 1.0 m. What ha b kog 9by,pg,+k,fr0zppens to the magnitude ozgkf 9p+y,,,k gb br0of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0dm+y6 c,e gv lch 6y-yw)wz,z. m. What happens to the magnitude of the force on the first electron if a second electr),mw,yzc 6 cyhv+w6g-zyled . on is placed next to the proton?

  An electron and a proton are separated by a distancer oly(ok+ vo *dzfp3zw 7d(79l of 1.0 m. What happens to tk*f9 w7oy3dorz (lp7l+vzod( he size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is a+x vk)y u+fsam( v;d .k3glj;placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it 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 squa a+klu;g3) ymd ( ;vjv+k.xsafre?

  A point charge of +Q is placed at the centroid of an eqaxi.r- nn3/ox uilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic 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 chan.or/n-aix x3rge of +Q placed at one of the other vertices?

  Which of the following nob r4y1 uu.7ois not a vector?

  At twice the distance fr8 ua9cy (o6r p/9eqy,lxeh+dl om a point charge, the strength of the electric field

  Is it possible to have a zero1x xmd m8*b4at -iomp, electric field value between a negative and positive charge along the line joining the two chargebi m4a8-*opmx tm1x, ds?

  Is it possible to haved: .ud+lny,lnfy )s6o a zero electric field value between two positive charges along the,+ nfyyl:n.ud)6d lso line joining the two charges?

  Electric field lines f.7a;vdia x /l x+wvgu,d/.up near psitive point charges

  The electric field sho:v odyr xsfy: +3cuw3rn 161sawn

  Can electric field lines intersect in free spaceroew3:b fop1v4 4ff c3?

  A solid block of metal in electrostatic equilibriumke i7t k,u2.xd is placed in a uniform electric field. Give a statement concerning the electric field in the block' d7uk.xt, i2eks interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters hgfc twgy 04*fwkq 8./are each given the same charge, the electric field (E) midway betweenqk* yft4h0 wwc8.gg /f the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a un;c pr:yai(n-epd ;u/h iform electric field is directed straight upward. What can be sapc y/u;(n dh-:e iap;rid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargcstpl e*cf;h26 f ipe): m2k6se

  A positive point charge is enclosed in a hollow metallic spm 5 mmd6t(kongpb8ep 8/ps.f9here that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphf (.o8p69sp 5k gntmb mme8p/dere has

State three properties of conductors in sj 1czpvq0j (a rtp5..itatic equilibrium.

State Gauss's law.

  The charge carried by one electronvd08j hq0k3rui9 pg 6q is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net v)+l5 9jk w9t6 vr/zz.uwhu fecharge of +2.00 mC. How many more protons than electrons does t/) z.whe zrv5t 69v+u9 kljuwfhis piece of plastic have?

  What is the charge on 1 kg of proton3:4v): q1z:yvs z0 3mmlj na;k lyivsbs?

  An atomic nucleus has a chargtlstabc 2 x(n*auc* izg*3-w 0e of $+40e$. 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 chargi/wqywh + rw:r*hl ,9du3 bpe7e values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f 9wd:/lub r p*ihwwe3+ y7hq,rorce between them?

  A 1.0-C charge is 15 m from a second charge, and the foruy*dznnb :d /qp:n1b*kmxz / f9); ckbce between them is 1.0 N. What is /zmbncb)zy u1f9 k*;: nx ndpdq/k :b*the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.rs9dp4 jbc*j-qrc;0 g0 N. How far apart are they?

  The force between a )ukf6 bdpj)b m5 ei .vdlq 3nr)w4h*m)$30 \; mC$ 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 forcoa 6d5zaq;,ses/v m o dxz/mw4u94ab1e. If they are moved to a new separation of 8.0/as/au;w4qzad,em 1s v5946o bzx m do cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir75o3kgyzsu.br xl- )ist charge 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 whi-isx75 guzob.l) yr k3ch acts on the charge at the origin?

  Three point charges are placed jrgj 98n rhhc2t4-( nvon the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cmn2r4hn-j r c8 vj9tgh( 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 followiu,,6rf s r0ltjng positions: Q1 = 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 tursj, 0, 6frlthe force on the 3.00-mC charge?

  A point charge of +Q is placed at th6p ejc(s ;4wb: cbh3o.o,mgcv e center of a square, and a second 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 bj :cbe63m. v4owo(;cs, pgc his the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10gg.io5c 2 hs*e m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the5*eo ih.gg2 cs net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC ikkamrp 25vu7 e,u d42wfks(0xs at (0, 0). What is the direction of the net fru , kf 52eks vxp2dwaukm0(74orce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plz hc65ey3xt2rz3tlr8 d+wl(n aced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude o3h le2dwzz3 ltrync( r+tx685f the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m dn;87 uarul3qprv52llysa, +. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be uyurd 3na2+r,al5 pvsll8;7q zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. W6p +j9be.+9 yffzedsk here on the y++996 zkefe.psdj f bx-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placedl)z8vdp8ua,dj 04 uiw at the origin and charge -q is placed at x = 2a. Where can a third positive charivaj4pu8u wdz)d0 l,8ge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. hil71+tjn *wh+ sek ms5ffz;: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 gravity by the attraction of a f5ckopt 45f zjo5wj0h3 ixed proton some distance above it. How far above thcj5ok34wf t5oj z0ph5e electron is the proton?

  Two 0.20-g metal spherchr p:ot7h3h pajz 5q2,*l)kjes are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the *co7j kah)2:,hjtz 3q5pr hplthreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cha6;4yaelsf+j v s3iy1hrge of +40e. What is the magnitude of the electric field at a 1v6j3lhsy e;i+y a4fsdistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1( 7q edvshw(n0.50 m fro(q(0vh w n7edsm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudee0yt(og l . zo+*ir3bvk) mz;d of the el0oem) z; *lv yk.i3z +(dgrbtoectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dircjpp); g3hsq 3ty:)lacrg 40f ection of the electric fieldfg:0sp3rlg43j chy tc ))q;pa?

  A 5.0-C charge is 10 m from a small tes2u;f q4: bfc +d1tpu,eeue 3ujis9uo 8qocq27t charge. What is the magnitude of the force u2d:pesjiqoeq 9u8 3c cuu4271tfeqf;,o+ub experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C andxwjmu2l *5xj6 1ajc8b are separated by a distance of 4.0 m. What is the electric field at a point midway betwe m xwac*xj6512jlbju8en the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a v )za2x e8/nxi-4.0 mC charge is placed at the 50 cm mark.a)2xen8 viz/x What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mzgau2btc4:,0 *g*c tn xt-+ g vukc7fieter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the*ggt:z0vx+u7ft4 *k-2 accbig,tnc u two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0s2*.no/dfwjiu8 fyp , and x = 0.20 m. What is the magnitude of the efui8 .j/ndoyfswp, *2lectric 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. q l:kwte)u(3.u(al* bib4s)fgrrxy 7The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of thyw gr.b*l)7buk3 elf(s:ra) t(xi 4uqe square.

  Consider a square which is 1.0 m on a side. Ch +mh titr2jy73u3aj 0darges are placed at the corners of the square as follows: +4.0 mC at (0j3yd ti 2rh+t3a ujm70, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is pla ;4 j;rmn3eqk0dib6hiced in a uniform electric field. What is the magnitude of this electhqmi nji 6krde4 ;30;bric field?

  A particle with a charge of 4.0 mC has a massck3v75r+c 0 d+kxyjuhiv79ex 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 elecct5 92.svvyfr4 gmu1jtric field of 6000 N/C pointujv5 4scf.9gr v21ymting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge o v)jf 2jdt x-p7: nb/7ppd5 (v(daauiuf -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the forc pap7 )vu72paux j:f( vnb-5 d(tj/dide of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What i he/ fh(cu)b-rs the magnitude of the electric field 5(-e fh/ucbrh).0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charges/,0wpwf2 oegloenph 34 n -j7 of 3.0 mC. What is the electric field 6.0 cm from the center of the3ow-f eg420j nnl/s,ppeho w7 sphere?