State the law of conserv--j j7somi6w cation of electric charge.

  Is it possible for two negative charges to attract eachb 5jj)g6m*za53 4zsefn+ (fkuxez :rt other?

  Is it possible for a pos .*ripb2u*s.2m 0fdm3gj gen zitive and a negative charge to attract each other?

  A glass rod is rubbed v.4u zn/7uckw1 u bn9gwith a piece of silk. During the process the glass rod acquires a positive charge and t/v1w kcb9 n u4u.7nzughe silk

  A proton carries a

  The model of the atom show1f si az) 3m opjhz+r9ic-b-r4x2w go*s a

  A neutral atom always q95zkn k41:3whojh zz has

  An atom has more electrons than protons. The a ht(f7; wy4vritom is

  Materials in which the electrons are bound very tightly torhh4;p / ha1y1jyv 3lv the nuclei are referred to ay y/v 1hp;l1rajhh34v s

  Materials in which the electrons are bound very loosely to the nuclei anw.5pss-kba4o -+z4j 3wplkt l+vu;gcd can move about freely withi-3 .uzp5jg+;tbwspw4al+ lk4so v-ck n the material are referred to as

  A negatively charged rod is brought near onexanq,kx *1e+p end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charged p qk1x*n,+xea

  Sphere A carries a net positive charge, and sphere B is neutral. Thelj(-e;trw . aqhy /k6+k4m 1m+pbbkf xy are placed near each other on an insulated table. Sphere B is briefl6erq;mb/ fyxk p(1b +hmla+kw j-t4 k.y touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively p; kzur*yu2.o;mkj 1j?

  An originally neutral electroscope is briefld7ob iy )fjg2*y touched with a positively charged glass rod. T*2g 7)ojf yidbhe electroscope

  An originally neutral electroscope is grounded brpoipklu 6:*a pyh2 /j(iefly while a positively charged glass rod is held near it*yp2: /lk uo6i( aphpj. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leav c- pnsk2s/qa-es separate. Then a negative object is broug/ -s-nps2 qackht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insula,ag l5jfv ur13-4kwu0 hlg)xyted 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, b3xh)4l0r1ya jf u- l,gvwgk5u ut 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 Couloh:8/79c u.b av dx3jhwn,: v zbarxwu+):zxlgmb constant $k$, which appears in Coulomb's law?

  Two charged objects aos,cs6sl)7 rhm;(zf6c ivq(y re separated by a distance d. The first charge is larger in magnitude than the second chargy( co)76ls ir(v,fq zs6 s;cmhe.

  Sphere A carries a net charge and sphere B is neutral. They are plax4xk*n dhi(9q 7hgn s3ced near each other on an insulated table. Which statement best describes the electrostatii nd*sx4x3 79k qhgn(hc force between them?

  Two charged objects attract each other with a certain force. If the charges oodnp+ g.bi;8q+k0 tob n both objects are doubled with no change in so q;nk+tbod8bp gi+0. eparation, the force between them

  Two charges are separated by a distance d and exert mutual attrac( chnha);)r kprxf7: ftive forces of F on each other. If the charges are separated by a distance of d/3, whp;cf:r7hr)a( xh fnk )at are the new mutual forces?

  Two charged objects attract each other with m8)kwmes y*s:a force F. 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 m:k)*e sws8myone-fourth its original value? The force is now equal to

  An electron and a proton are separ,z1rg7 uwsl,okcg/ w 3ated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if sl cok3gw17 wr,/gz,ua second electron is placed next to the first electron?

  An electron and a protodyxzw9yd32d/ j1kx cb, k1;pbn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to zcdx kb/13kd9 ,bjpxy12w;dythe proton?

  An electron and a proton are separated lhii3 k it*+.+swk6fkik i97uby a distance of 1.0 m. What happens to the size of the foh+.*uktsikli3kw 7f iiik6+ 9rce 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 a aqb1 2q( ox,5ldhe+igk +1k wqiae ;g-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 iekb2xeq l 1agowi; + (5+dq- kaq1,hgof the square?

  A point charge of +Q is pla+xb*;:mw y ;33m)wb(y(ejum rt bpvpzced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force oe;3wt;* b:pu m(yb3j)mmvxwp(z r+ybf 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 not a vector?o h*3 1jqh+ykdm 3n3cqne)y*w

  At twice the distance from a point charge, the strength of the electric fielxvbxvd 4ovuv+1 u1/t1e 9 gin/d

  Is it possible to have a z56gdnh i++gvtgn*m cf/j bk893u nax-ero electric field value between a negative and positive charge alonb+ 5 mkhfvu -jng n g8+3/cdg9*tia6xng the line joining the two charges?

  Is it possible to have a zero electric field value betsn0e,k)d;sc 88zd eg-a1lc de ween two positive charges along the li ,c ds)08lek; -na1zdees8cd gne joining the two charges?

  Electric field lines near psitive point charg vckb*y *qi.)ces

  The electric field shown d6q/jsp 0x.gf

  Can electric field lines inteh)fxi cw 10a4crsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform w9* nbijh/ ub.electric field. Give a sn/ bi*u jh.9wbtatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ax9klg553t kkk4svz -ure each given the same chaku-k ltk9sxzv53 5k4grge, the electric field (E) midway between the center and the surface is

  A cubic block of alup8 fbqaim+u4 4 sw(wi0minum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the chargeqw0 + 4wpbum(8ifsai4 on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrij jt9tgb3ys*hzhw 4 * uup+q,/c charge

  A positive point charge is enclosed in a hollow metallic sphere that is gro*uxez,aih 7p.unded. As comp*7 e h.ux,paizared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sttmxd3p (3p3)qwfhng 9 .6dmdvatic equilibrium.

State Gauss's law.

  The charge carried by one electsw (pcz ak05/z)pvdo6 ron 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 prot; spg k*7*co2aua;ykwons than electrons does this a2ouk;w k7*g * cyps;apiece of plastic have?

  What is the charge onml9eexs/mqo,x:* 3 bdhw1d /a 1 kg of protons?

  An atomic nucleus has a charg0qgjjg: *lzt9ac9s w 5 uwp*q.e 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 cqvnqvz18 g; 7b n9;dchlst/( nm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electriczhn gq/ dq8t; b9;cnv1ls7 (vn force between them?

  A 1.0-C charge is 15 m from a second charge, and the force brc8bd yd)612-ymgwr*r)e0m /pu r ik petween them is 1.0 N. What ip- /wb0piy8rmrrc u )k)d2m 1*6 yedrgs the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 ) nz* e+gq :fliwj16hfN. How far apart are they?

  The force between a ,z)4o+r6.fpss alhit $30 \; mC$ 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 forc4 ko9hkpj8 f6be. If they are moved to a new separhobk4 j6 kp89fation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed p0a3se 7xy)k lon the x-axis. The first charge is at the origin, the second to the right e )p 7sxal0k3yat 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 chf61yda3t.iji arge 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 cm mark. What aretfi a163d jiy. the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located j- q(7ao gwni+n12 lzcat the following 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 macln(wq j-a7+i 2noz1ggnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a enx.dd;ci2m 0b teqb2l - 8no5second 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 nem bd.0l2t; 5iedbn2oq8 -cx 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);ybunid.em310 s(m hp:- vq qw0 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mag3q0 vui.b1: n es(hmdmwyp0q-nitude 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 a 5 7dmhr1zjw+ck4hji :t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha+zdmk7j:j 1ic45hr wht is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3. j ,jekul.qm360 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of tu 3j k.qel6jm,he electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whtab sie3.rcw/2f - xb4at poi c/axf-3 b4 sbr.t2eiwnt, 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 zero?

  A +3.0-C charge is at the origin and a njymvt.t1 pkp(7*6v 6 xw8gpp +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chvwtpx8 p 67npjm6.( 1pgvyk*targe be placed so the net force on it is zero?

  Charge +2q is placed at t1lo )vso6k:enox2l1o he origin and charge -q is placed at x = 2a. Where can a third p1lo e)o1ns6ov:lk2 oxositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.j)t slckg)5l * mxk(0t0 g. 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 * fe 771ht6po47yfl6/kkr*icwdhj ds a fixed proton some*d k/ji*fp1th7 f klhc67ws7rdoy46 e distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by jv:kj jp69 .e;g 2f -wgeigvqzqjr4 8-nonconducting threads which are 30 cm long. Both are given identical charges, and the ejgvv4g fr2 pjj.- gee;j6 8-kw9q: izqlectrostatic 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 the magnitude o;hufuqht/n -8notnu*0jkt 5c73eu( rf the electric field ar8e h*htcuoft73tu 5n/-n njuqu (;k0t a distance of 1.0 m from the nucleus?

  What are the magnitude anjo rr;vp/,qoxvex cq, ao(xo6 l--w-7d direction of the electric field at a distance of 1.50 m 6-7/e-lwox q qrvx arx;c-,, jov(poofrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from agcvj0gtw t)3a8y5 +acii4 o z5 small test charge. What is the magnitude of the electric field at the location53 tjgaiyo 4a5wcizc+tg0 v)8 of the test charge?

  A 5.0-C charge is 10 m from a small te y1 va 98-+pft 7d:+mzklcmcmist charge. What is the direction of the electric fizy7vtl-k 9++a8c : mc ipfm1mdeld?

  A 5.0-C charge is 10 m from a smaly-o)mwtu 20r4y ud6fzjks:;p l test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tes6mwdk ytuof4:2j0r y- pu;)z st charge?

  Two point charges each have a value of 3.0 C and are separated by a distan 9cl f+wp. fgy7i+6qtwce of 4.0 m. What is the electric field ap. lqw9+t6yw+7gc ffit a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of cxmudu;f06h- s 9zya/ v3pj0la meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thc6 u0m30y flv;pjhu9adxs/ -ze 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCfdb42; ztz,b1 +a boma charge is placed at the 50 cm mark. At what point on a line joiba f2m;bz abdto4+z1, ning 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 x = 0.20 m.: qqulh*5( eoy/ g:wvh What is the magnitude of the electric /welyuqv(:g5 h o* :qhfield at the point midway between them?

  Three 3.0 mC charges are at the three corners o m 05kx-jba3vff a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at tm5- vba 0j3xfkhe center of the square.

  Consider a square which is 1.0 m on a si(avf;upjnx,)w7ta5ck1 f3h x de. Charges are placed at the corners of the squar w,k(f)ufjxn;c7ax35 1av thpe 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 2u3)y wvqfl+b on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude ow fu)3byv2lq +f this electric field?

  A particle with a charge of 4.0 mC has a mq 7/:vkmi7k rfass 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 6000 N/C fsl: comq11gn 0,ai6n pointing downward. What charge must be plal:6 0qm 1s1nn,ocigfaced on the ball for it to be suspended?

  A foam ball of mass 0.150 gsq2pam ;ctr74 carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are ;atsmq2 p47c rthe magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC.gw (, c2ut96jb,ky itz What is the magnitude of the electri, ,6bjy9u( tzgk2c wtic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the yn 4) vs g7zg7qup,p1jelectric field 6.0 cm from the center1v p,7gpsg y74nuz)jq of the sphere?