State the law of conservation of electric charg1bxwak/f208c(y : mb*d krawd e.

  Is it possible for twoq: 18xv+c,cqn txc 0ml negative charges to attract each other?

  Is it possible for a positive and a negative charge to atonboa, yhr:k ,0m3c+ktract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassq p)8y.yt2er s rod acquires a positive charge and they.e) 2 t8sqpyr silk

  A proton carries a

  The model of the atom shq,+ m(9ohjo cyows a

  A neutral atom always ha83f zxkfjvz97 s

  An atom has more electrons than protons. y z94b8;).:iui :hqbt8 b tbsrene/ns(u1yey The atom is

  Materials in which the electrons are bound very tightv neev0d2:6)n kf4obex;kdrb r.,q5i ly to the nuclei are referred:eb0vofr.xv54iq,dn 6 ); ne ekr2b dk to as

  Materials in which the electrons are bound very loosely to the nuclei qz ijmq6,4 fa78k1sh8lahp8e and can move about freely within the mateia k6l pfhs8q8qje84m1 ,zh 7arial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal q ,8ogzty1mv 7ilor0. bar. The entmz7rio 1ql,.oyg0 v 8d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sph+f63b ey adru9ere B is neutral. They are placedafyd3r6bue9 + near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electx6jp *n 92ppfji0 ,hrcroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged jx6a ;g; l7cnsl0l7xh glass rod. The s;g6hlj l 7lnxx;c0a7electroscope

  An originally neutral ayo5rb w)j ;jq7/ wxlv n4t1g+owl53 xelectroscope is grounded briefly while a positively charged glass rod is held3lraw 7lg qw+4w jv)5to5n1 ;jx/o xby near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. x4utj/qe-q6fid3jdqnm45 z3 Then a negative object is brought near the electroscope, but does ntzf dixjq4/ n 3eu6q5qd4j3-mot touch it. What happens to the leaves?

  A large negatively charged object is placed821*yvi: i xqwe k +p2pnwekb6 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 doee wbw ii*kvppn+6e y8 21:kxq2s either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb const,;ynl0j4am xq ;*hzs sant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distthc 0pz-vxvh8, 7 dhckzv41n+t)yk8fance d. The first charge is larger in magnitude than t4dth88p)y,c+cfvkzv nvthk -01hx 7 zhe second charge.

  Sphere A carries a net charge and sphere B is neutral. i mg87dtlcmj cbh7:g, + 1ay4b They are placed near each other on ani7bbm,cy8htcj:71 dlm ga+4 g insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges ol27ox ozb 5rea0l i-)un both objects are doubled with no ch5aex)0oo bz7lri -l2u ange in separation, the force between them

  Two charges are separated by a distance d lqr;5 o q:g1+qrnqduftp84g 1and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the q q5d8 r1+1n:4frqg;uolqpgt new mutual forces?

  Two charged objects attract each other with a force yomncxizm8bc/d38d;y2zu8 w+ux*4 kF. 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-fourtxmmw83znu24cc zid88uy y +/kd*;bxo h its original value? The force is now equal to

  An electron and a proton are separated by a distance ohw(xq,g n)ok /f 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the g/x ,nkhw(oq )first electron?

  An electron and a proton are separated by a distance p1; / bjnf)spt)ctt 1pof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron scb/jp)p;t )t1tfn 1pis placed next to the proton?

  An electron and a proton are separated by a distance of 3x*23g f ka3rum-v qk0nd+hvk1.0 m. What happens to the siuk0r kvx*v gahm3kqd3 +-n32fze of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When aojmld(40u62 f)lj c3sac4m bd 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 b0(ml6 j4 )3aolf2 mdscu4cjdthe positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triang pfi+/q.llr69m un3m ko;t9lmbu+u p3le. 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 charge of +Q placed at ;+o uupkmi9qfbm93r/llut +l3p6m n. one of the other vertices?

  Which of the following is not a vectn 0i+acx,*qbror?

  At twice the distance from a point charge, the strength): 5jepkrrj1t wz*p q7jsa*- z of the electric field

  Is it possible to have a zero electricz 9s9/hru )prbqkr/* i field value between a negative and positive charge along the line joining the two chau rr/ kp /9hrsizb)*9qrges?

  Is it possible to have a zero electric field value betweenc i(w33rzv(n i0jx kj uhx2/3y two positive charges aloiwy(/jkrn(vxxj3 hz0 cu2 33ing the line joining the two charges?

  Electric field lines nea mgx cvs)3vfbi9)wq7)r psitive point charges

  The electric field shown bmx3* 3 zrqhg9d9 3sgg

  Can electric field lines intersec9z h j/jr7l hf/h 8fwzalu1n:v-yr:0 ct in free space?

  A solid block of metal in electrofa as7u-x1u)estatic equilibrium is placed in a uniform electric fielda)u1ue a7-fsx . Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollnbmhg , y2d+rr+3,g-a*f gxgvow metal sphere of equal diameters are each given thef gmb, g,a y3h*rngrv2++x -gd 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 region where a uniform elqjf xqnf j15lnb9brk , n,/9zkq(8jb3ectric field is directed straight upward. What can be said concerning the charge on the block's t8qj l qnjjkkfn/x3,r91n bf,(5zbbq9op surface?

  If a conductor is in electrostaticl(kft k. b.gbh..jrx4 +5uq pr equilibrium near an electric charge

  A positive point charge is enclosed in a/ , t,z3q)w1qricrajy hollow metallic sphere that is grounded. As compared to th1ir a 3ztjyqqcr,)w/ ,e case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eqt w +4:yv7r8 w0fsblo1nc7z hnuilibrium.

State Gauss's law.

  The charge carried by one electron (mpl*s *c1/rb5e zo xf9u 1f3iavw6dz 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 mkqv33je8;l oj 4prdn )i4x) udC. How many more protons than electrons does this piecopu;x v kjdj 8er33nqid4 )4)le of plastic have?

  What is the charge on 1 kg of protons?5 kizsi 1vlm:f,fdj*;

  An atomic nucleus has a c0zp9uyc+h c( mharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1w so84fpi.3o c s/f.(isr3 iks.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elwp8o i ..(c3f/o4riissk f3ssectric force between them?

  A 1.0-C charge is 15 m from a second c5;euzxdj+0 vrg8d0v eharge, and the force between them is 1.0 N. What is the mdg+e 0u; v8r5xj dvze0agnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 1nrxayvw tl8h --h 7v-+lf; 16pgdnjtN. How far apart are they?

  The force between a *cmlc os7w48 u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a d8a*tz2xah+.hc2yz opart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force xayt cz2d .z2ha* +o8hbetween them?

  Three identical point charges of 2.0 mC are placed on the x-axis.bkat(* dtl1*m The first charge is at the origin, the sl1kb*d*am(tt econd 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 thetgy; zy 0:c1id x-axis. A charge of +2.0 mC is placed at the origin, c:yigyt 0z d;1-2.0 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 poq2kiw- - i7e /y: bsohuj-4bmisitions: 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 magni-o72isy/:j4- h ewibmbk -qiu tude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, an )8yuyz )7j8pij piim(d 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 is the magnitude of the force that acts on the center charge if a third charge of -Q is placed aiyi)7( 8ipjzpju8y )mt the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 =9a /iw8v8tafz wagodr8(2m i) 5.0 nC is at (0, 0). What is the magnitude of the net force on the w8i28ot a(zd8ia9fm/ g arwv) 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 iksnkv3e* e2kav5p45nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 53e vk5kvn 2i5ea4 *spk.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertic ageabmc-.d/i6hy i /q9iz .r9up6tm8es of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electroda9b 8/i.-cqrez imu69 iah6 /ymp.t gstatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, w / nvex / o;g-1s;w0ovufjh4dyhich are separated by 3.0 m. At what point, on a line between thevf4nejsuo/gyd;0 ;/ wx o-vh1 two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge isap( 46gkn6fr y8w2s su at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?2k6wy(pra64 fnsg8 u s

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.)2md o zmaml+,r7ey7tcb9x7i Where can arm9bm7lx )cdz7mi,yoet 2+a7 third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalaz- ei0 -qscco 8zul.. 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 no36j bmhrj- h+6j3sqyd * o9dg;dyq5uppy0* attraction of a fixed proton some distance above it. How far above the electron is the protpny qy*do *3j sdm jy -u0g6r63 hdjo+9bh5pq;on?

  Two 0.20-g metal spheres are hgrkdk 8ug.0 i;ung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them ukd.;ggk80 i rapart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge bn) 6rh+ m.xu5fj+t0fvnq( ud+ypwo* ayl/e3of +40e. What is the magnitude of the electric f+5eb*r3xutjfy6u myd vh nq0.+(+ n) /olp fwaield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance -c8rc,.qgxks of 1.50.scx ,8gr-q kc m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small td u2ri02vdr :west charge. What is the magnitude of the electr0vi2wdu2r d r:ic 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 of e 8r, 1d5n:1arpvaqft the e pvrf,nated18r51 q:a lectric field?

  A 5.0-C charge is 10 m fromy-k ,hrxs1c)) 4fztkb a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chax )-byst) ,hk14czrf krge?

  Two point charges each k,aka,(w:ql* ( g ouixhave a value of 3.0 C and are separated by a distance of 4.0 m. What :k,ao(qx i (gw,l*k uais the electric field 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 a -4.0 d3/jqt/) ,8f. j mytsl/-igy dqhp. 0knf6bdsmC charge is pl p,j0btyi-qqyfl6fk./dj/ n. d8 gd)ht ssm/3aced at the 50 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 mksg qo(s*k*0+hpdaxi/ 9 oax;C charge is placed at the 50 cm mark. i*+/0;kshxd *9kaqao( pso gxAt 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 placed at x = 0 and elb9v;ds 7 z yr-u90pyx = 0.20 m. What is the magnitude of the electric fieeyrypb97v- 9u d;z0lsld at the point midway between them?

  Three 3.0 mC charges are at the three cornqcmsi y:(ka q,d5 d5j84n: uqjers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at thd: qcn54,8jd i5yus mqkqaj :(e center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at 0ezejb:n gt:rb- +)rwu 3+pglll)f -w the corners of thel rebgpwzg)e :jult0:3 n)-bwfr+l-+ 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placem1yfxk-fd1eve 9p l kai z17* 6iln)3ed in a uniform electric field. What is the magnitude of this6 kyz1felnex11* d3ivlm9aik)p- e f7 electric field?

  A particle with a charge of 4 -eytdxo j0*g).0 mC 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 ftxi481 gnx-hl/.dqpd5tykm1 ield of 6000 N/C pointing downward. What charge must be placed on the ball pl.gnd xyxkiq/mh48t1t15 d- for it to be suspended?

  A foam ball of mass 0.150 g carries a cha07 bt) 1bxehi lxzz4a5rge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and5hzbb)xe74tlia 1x 0 z direction of the electric field?

  A metal sphere of radius 10 cm carries a charge oqy49azcet ,l/ f +2.0 mC. What is the magnitude of yqa 49, /tclzethe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrgxq9 re- bv98te fjn83- oerdf+ f7(jbies a charge of 3.0 mC. What is the electric8 f-(e 9 +f389b7qbtxjrve-rdneg ojf field 6.0 cm from the center of the sphere?