State the law of conservationa2jq5ufzs *a0 of electric charge.

  Is it possible for two negative charges to attract each o*ve ;8l1 3jkwpx-1 oilcxs5qfther?

  Is it possible for a positive and a lf56z+dhme4 8 oia*iu negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procesd3lj(viwv mz(tqj6ic 75m/ 3cs the glass rod acquires a positive charge and the silk i (5jm/36cmlv 7qwt3jz( vidc

  A proton carries a

  The model of the atom shows 4d.rv 8 gz(jyna

  A neutral atom alwaysp;j ;77 )jcjkgxc +quz has

  An atom has more electrons tiehn ;mh 8 e -,-fe)xctbzjv3/han protons. The atom is

  Materials in which the electrons are 8gr9ow;.v2o m z hq0eubound very tightly to the nuclei are referred mo2 oqwehgv u.9;8rz 0to as

  Materials in which the electrons are bound very loosely to t d0 c:oii,axz+zjls cxc-k6; .he nuclei and can move about freely within the material are referred to ;,ka0.x jidsz6c+ io: l-x czcas

  A negatively charged rod is brought near one end of an uncharged metal ba4 vnno/h+j: dcr. The end c 4+o n/:vnhdjof the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B;o0.wzoc jr- 9r(ffwe is neutral. They are placed near each other on an insulated table. Sphere B is b-z o fwoc;ferwr.j(09riefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive ms1tv1 2bx 294sgvogoly?

  An originally neutral electroscope is briy3(ro;p.yfv+ nt-i vwge5 up7efly touched with a positively charged glass rod. The-v y( ef3w+t 5ypur.v;pong7i electroscope

  An originally neutral electroscope is grounded briefly while a positively cxw;k+/f* bi:cg jk1xo harged glass rod is held near it. After the glass rod is remo*b:x;owgk+/ i1xcj kfved, the electroscope

  A positive object touches a neutral eleu2i7 +oygise(a li1qa-t.l1x ctroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What h(1e gix-oi1aas+u7il yt2l.qappens to the leaves?

  A large negatively charged object is placed on an * uxv,l jtr6in77trq; insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A str,n7 it76*rulvq; jxecond 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 charge on each ball?

  Charge is

  What are the units of the Cb0) egujrkd cf o242hgef3/e,oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Tlykg qo l6pqp0g z *t8a54b22lhe first charge is larger in magnitude than the second q l2ptzo64g lq 8lkbgy5 p*0a2charge.

  Sphere A carries a net charge and sphere B is neutral. They are placeduwt jp2 .oqt5 p84/tpk near each other on an insulated ta4 w2o ttp8t pu./kq5pjble. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a o nve:;nmw5hxls 5n fvv 4k-6+certain force. If the charges on both objects are dou6 5l ne+onv-:45vsfn vwk;h mxbled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutuat12oy1.rbkm;yyv;mc yw;l:q );yta no f.j8ol attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new m .t1tr; ybo 2oy;vm:; w)ajy8lq.1 ;yfoykcmn utual forces?

  Two charged objects attract each other with a force F. What happ)imz:2acyz7dxdq de m11 k(q* ens to the force between them if one charge is doubled, the other charge is tripled, and the sepa 7cqdq)*z(a2yzkdd 1m1:m e ixration distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proi- fgdf +m58puton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secondmf -58ipg duf+ electron is placed next to the first electron?

  An electron and a protonpo 5(lt)a (nik are separated by a distance of 1.0 m. What happens to the magnitude of the force on the)tia(pk 5no(l first electron if a second electron is placed next to the proton?

  An electron and a proton are separated bf un)q2)ups/pq )pad2y a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to tpn sq2a)) )d /upquf2phe proton?

  A point charge of +Q is placed at tlvj7*963ew 7p7ajg*b aijpg mhe center of a square. When a second point charge of -Q is placed at one of th gj7aae7pvlm*jpig7 jb3w *96e 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 square?

  A point charge of +Q is placed at the centroid of ak1d* 7/,do 6gnhbk*q vz4swidn equilateral triangle. When a second charge of +Q is placed at one of the triangle'7zis qdwknk4 db/, *1ogh6dv *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 charge of +Q placed at one of the other vertices?

  Which of the following is ud nf9dz3gyb 6dx-0ldh30 5w hnot a vector?

  At twice the distance from a point charge, the strength of gl0- ul4qgdtk:p2zs4c n:4 hek+; lnmzv;h8sthe electric field

  Is it possible to have a zero electric field value between a negative and podl/ht69s- w uiq 6rj3 dah qq,q*a5ob+sitive charge along the line joining thar +oa6 6*jhlhq ,/3 -sqdtbqdq9iw5 ue two charges?

  Is it possible to have a zergcemf8qjya65,/tpe(2 *d ftko electric field value between two positive charges alonp e2f(j ged8 ,/*kty65tmacfqg the line joining the two charges?

  Electric field lines near psitive point mz98,d+s wl;hf4oql x charges

  The electric field shown c:. m;zpok:ne r/il 7l6r+coy

  Can electric field ljq d k1ff3h d1 : 0l+rg0:10dpsebjceoines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform;- i-t,klax+ u9ypo 5rz3ku cwyj5j;s electric field. Give a statement concerz+; cj-53 uitou pj,;s 5 axy9r-wkkylning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equa; dk-s.,ew fsel diameters are each givee,-; dkw.e sfsn the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regio 2ld7ys2xx vv:1gu, vut+- kuvn where a uniform electxv1lvkg -u2xt2u ,:dv 7sv+yuric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electdxjgqh,e/sd ,-ku i4) ric charge

  A positive point charge is enclosed in a hollojc6g1 /gycf:g x:,f iv2uj)w; s q*ljww metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollowi2)jycgu/fgg,sjw:c : f ;j *xlv6qw1 sphere has

State three properties o8 1-,h(qq x6yforxdbz*vn p1hf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one er5bqk 20sa,i clectron 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 charge of +2.00 mC. How many more protons tharz*7; :ja rbqys :)jtgwbi y04n electrons does this piece of plasti:z ty4rw;g:j*bji 7y0)qs brac have?

  What is the charge on 1 kg of protons?i;y g vj6av0ri-lpi6 ,7m )nsd

  An atomic nucleus ha qqy1 2s nnqgcp,/h-yh6i gncb +9uh6*s a charge 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 charge values of 2.0 ahhkj7:mlo3:.xgif ) f nd -4.0 mC, respectively. What xfmo37h.lf :kj h:ig)is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force gkr xzr19**ad8a r.tlbetween them is 1.0 N. What is the magnitude of the second chgrz *at19 r8*.k xlrdaarge?

  Two 1.0-C charges have a force wl0/ t lzh+yp8between them of 1.0 N. How far apart are they?

  The force between a neh:lvgj 1s *kn4+aa, $30 \; mC$ 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. If thk1w992* c :ic,tjn b7w)5eiz fnmtjlaey are mon: mt9w)1z*itk f ,awi bej7c2ncl9j5ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Tc4fwn20jeo9o) j44uf k q+ nszhe first charge is at the origieno4uzcj 0n 4fjo )+kq294fswn, 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 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is place6r*vlf6e 5neoxsl 1b-d at the origin 5fv*so6- beler6ln1x , -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: Q1 = 2.0: i4h 8ws/wd+vd.qwbw 0 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+d/vw d4w: .s qhwiwb8 the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a)9(tdvrri: 6a -a hfbv second point charge of -Q is placed at the upper-left corner. It is observed that an electrostaticda i 69h(ratvr: bfv)- 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is 0h hqo,jvwqk;ot2v*4 at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whath vjtvw *20k; 4,ooqqh is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is *oc i. 2w47mfduq5 efgat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0uc*2f5 .qd mfo ei74gw). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate/2(lxomap0vk+d(lw wral triangle which measures 30 cm on a side. Wdvol/ 2w+ ma(xlwk( 0phat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and xsy 07f n.gj9uj )f w5z5egyk( qlu/2x+4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostaf.y/5ykxl u9g(2)ng 05swuejqz xj7ftic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x ixm j60vpb1d gm c89-pm2opg0 = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is8-c 0pgj 6mmmgb2opi10 9 xpvd zero?

  Charge +2q is placed at the origin anz+f4rc4l+t lv, pmkk)d charge -q is placed at x = 2a. Where can a third positive chargem)f k +clk4t ,+lprzv4 +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total 4z4fi;ie;;e hwnz g 5s9dyl+vof $4.0 \times 10^{12} \; electrons$ 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 a-mrnrgom3,bdtf mgw 0 o-,(.kttraction of a fixed proton some distance above it. How far m tm0b,orm-kg(w 3, -nro dg.fabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a vij9lkke9/eh . ag *f-c- *ubocommon point by nonconducting threads which are 30 cm long. Both*e9ak9elf uob /v*g- jh.kc-i 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 a charge of +40e. What is th(- nkh*:*gjna*kw c gl.+tdzz e magnitude of the electric fznj kc zw +dl:.agg *nk(t*h-*ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dist hxz- *yr3)*p eyzu6ocp(j ;kzance of 1.50 m p;*k orhu 6pcz-zz yyx(*3ej) from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What(lafwy 9ar skv.u31 o1 is the magnitude of the ea31 o1wu9lvf y(kra.slectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of5 uk(le3yf0io0n ynq-) tj2: p4iixdl the electric fi0iqytyje3- i l )(n5l:4x uin2p 0dfokeld?

  A 5.0-C charge is 10 m from a small test chargen/e fhpk862f8b. rkxj. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of theb6k fn.e82 kf/8ph rxj test charge?

  Two point charges each have a value of 3.0 C and are8q,u- wpj ry:cfmk 2v; separated by a distance of 4.0 m. What is the electric fieldvq w -2f;mkj:8purc,y at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and xy 3 :67 aitw fz(2herb0sqqgel:d68ia -4.0 mC charge is placed at the 50 cm m 7iz8(br:6 ed6qyfslgt3:hw2 xeq a0iark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0mt. guo)1ylj y5 7no5e cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges il eg ymo y7uj).5tn51os the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 pfl2hyt+v(;c3ec g 3mm. What is the magnitude of the electric field at the point midwayfv (2hm3+lgtp3ce; cy between them?

  Three 3.0 mC charges are at the three cobu7vdiogw):4+y qpx ;rners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chaui qbo7)dv;: xgp4 w+yrge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are place wasj-;w ordv, .vg-f;;vunf.d 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 mC at (0, 1). What is the magnitude of the electric field at the squareu vj;go-sdwa-,vf.fw;vn .;r 's center?

  A force of 10 N acts on a charge of /irvknw / +sl25.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fl+ 2sr/wi/kvnield?

  A particle with a charge of 4.0 mC has a m jh :*4qzv6gqlass 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 pl10 if7 ysyj lh:9*yxuwaced in an electric field of 6000 N/C pointing downward. iyl u10j7yh9: yxsw*f What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Th1. xud;6gqst we ball is placed inside a uniform electric field, and is suspended against the force of gravi;g.1u6d sx tqwty. 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 is the psqly k t /.4vp9n3+kvmagnitude of tnp+ st/k vy.vk q93l4phe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriescp5wf*k3rd 4c a charge of 3.0 mC. What is the electric fielddcpwc45k* rf3 6.0 cm from the center of the sphere?