State the law of conservation of electric cop/x)q8 ya zw +y9ed-x on4r 13g:ytneharge.

  Is it possible for twsoi x)3e 8kr q:7o*w;mets)ixo negative charges to attract each other?

  Is it possible for a positive and a negative charge )mzu/))hwqfjmr t.7xi+5t pyto attract each other?

  A glass rod is rubbed wit3*cuu62*qhfmq bgq g p6.cti0h a piece of silk. During the process the glass rod acquires a posit6pucqhi qb .g26fm0*utg qc3*ive charge and the silk

  A proton carries a

  The model of the atom showq,yv x 5gqy (9yxdt.dz9df9h-n0f: jys a

  A neutral atom alwayhj3h-j+k,t*; -rcwc fp rnz u9s has

  An atom has more elect b ecr2y7,voe,rons than protons. The atom is

  Materials in which the electrons x1 r;5shrq3i0 w ainyxc)/1ssare bound very tightly to the nuclei are referred tos3ssyq xw5c/rna );01rx h i1i as

  Materials in which the electrons are bound very loosely to e lc87a7;kl- szp lavhpg;(f( the nuclei and can move hz8sf 7va7(; llp ec;lapkg(-about freely within the material are referred to as

  A negatively charged rod is brought near on8/.vht nhrb+ rlld3 w)jwi03m e end of an uncharged metal bar. The end of the metal bar farthest from thv r3t0wld 3h 8m) rjn/bhwl.+ie charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are nk biz2fvw/d +-xz8 u42i z:ppp/f ,cr fvz(8lplaced nea:/iz2zc4(zz rp/8k-+8lf x fpw b2finpv,udv r 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 m.a2 sf:bb7ivan electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged qmmi6 f;narw.:u yx m2e.ig.- glass rod. The ele.fmaiim eq .rnxym2.wu: ;6g-ctroscope

  An originally neutral electroscope is grounded briefly while a positively chargcw/bq *qm+yv +bmhr3 +ed glass rod is held near it. After the glas b q /++*vwmmr3bhcq+ys rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thxk4aj bo3v -/hen a negative object is brought near the electroscope, buovb hj3ak4-x/ t does not touch it. What happens to the leaves?

  A large negatively charged object u +vv++roxai-5jrk+*g 0 nditis 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 cu*xoavi5g d- +j n0+rvkr i+t+harge on each ball?

  Charge is

  What are the units of the Coulomb const9ut*5f;hk iv; /9pq yz;zeh mvant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is i90 q7agtskcxm i16.olarger in magnitude than the second 7c 0i1gx9tm.q oak si6charge.

  Sphere A carries a net chavfjd3 z9l4l+vnm;*t) c1fe bgrge and sphere B is neutral. They are placed near each other on an inle vnb *gcdm+4t)v3ffl ;zj91sulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eac/; c icc(kk+ w*yb-fuvh other with a certain force. If the charges on both objects are doubled with no chkc u;fcb(c+-wik*v y/ange in separation, the force between them

  Two charges are sepa;.z s*brfnz1x rated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the*.zb fz1xn;sr new mutual forces?

  Two charged objects attract each other with a force F. What happens to pmwonxs4-5 ijrnu )sp uomf37zc 63z9+2n: bk the force between th 65u3ofuon s rj49 zp23ncp7kw-x:m)bnmzs i+ em 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 to

  An electron and a proton are separated by a distance of 1.0 m. What happens to is tr *0l2x vr:cru3w0the magnitude of the force on the proton if a second electron is placed cxv3 r2 r:0irwls *tu0next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whao0bzuv08epv :9w) cp0drixy 7t happens to the magnitude of the force c7zvovprw) i0eu080ybxd:9p on the first electron if a second electron is placed next to the proton?

  An electron and a pro5d./ ugbk1b3tikef e3 ton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is mov/u3e5.3ebfd tig 1bkk ed 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a ss; iv/jihr waiz/k5 39lgj5g 8econd point charge of -Q is placed at one ii53s v8jiza9g/jrg ;l/kw5h 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 square?

  A point charge of +Q is placed at the centroid org zy) eobue. 9c3+an)i3ydt:f an equilateral triangle. When a second charge of +Q is placed at 9e e33rn)zgu b+c y:t)iyoa.d 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 one of the other vertices?

  Which of the following is n53t u3l5zz/rv 2dcy/7ocnhbnot a vector?

  At twice the distance;ynwn)y a) ;bdw bbzv)vr;;6z from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posis8n tix,8l,phvx as. 5tive charge along the line l.xpa85,v 8s xtinh,sjoining the two charges?

  Is it possible to have 8p kwncu 5 h3ax,)xyh0a zero electric field value between two positive charges along thenh5ha0p )xu3yx, wck8 line joining the two charges?

  Electric field lines near psitive point chn( i5+ d8u3 aug0e ddjxtuif9,arges

  The electric field shownwo svm 47ze4w:

  Can electric field lines inte9 wjuy2tnh*2jpn( ld.rsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in diopp7qi( c1o1 ft;9 aa uniform electric field. Give a statement conc ; ifp9dqoac117( toiperning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere oahz 4wh8 */l ;c0mwwyjf equal diameters are each given the same charge, the electric field (E)ahmwl8 0zcy *hj4;ww / midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tabledtpgs ;wklr0e q/t fh2w907 bregvyg3,b0z*. in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top ggyt0 gbre l 30qpz7ew w,ksd0;/9h vrbf*t2.surface?

  If a conductor is in electrostatic equiliz-poy;- rcc :hep31 nbbrium near an electric charge

  A positive point charge is enclosed in a hollow metalx1 : wvbet4j7) aevcw)lic sphere that is grounded. As compared )7)4aevtjwc b e1xv:w 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 static equilz nf ,i2z()svhie 4rl*ibrium.

State Gauss's law.

  The charge carried by on.l e9h2 wmjef9e electron 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 tb yzqyf* 7wz n,y0x(60pyet6ons than electrons does this piece of plastic ha6w0tyzypf y6z bx* tn0(y,qe 7ve?

  What is the charge on 1fy *+n* czm*r*0z zdjf kg of protons?

  An atomic nucleus has d-vj zpyqq62;fgiom 7 rg0;+ua 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 ansn91+/ sxlbra9)v g5lh jn3m sd -4.0 mC, respectv13 )x9nm h+s g/n9asjlslr5bively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and thep )b sqzmu:c2. force between them is 1.0 N. What is the magnitude of the second char)m:2.bp z csquge?

  Two 1.0-C charges have a force between them (vjmu* l0:o-rd.pd syof 1.0 N. How far apart are they?

  The force between a 58pf l,l4l84xd m8oyr wpxuv,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience c(e t7 3kd6auf 6uqx,na 1.0-N force. If they are moved to a new separation of 8.0 cm, what is 7ft6du ex3qck( n,u6a the electric force between them?

  Three identical point charges of 2fmaj :v6xy .a4; zv*ob.0 mC are placed on the x-axis. The first 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 electrosta*fy4: 6 xb;vom.av zjatic force which acts on the charge at the origin?

  Three point charges are/i9richnnis(. )v py. placed on 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 cm mark. What are the magnitude a..yr vp /shiin(9c)ni nd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Qxi7 /5*) nihyjsg qrq21 = 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 foji hq rsi7n5)x*yg2q/rce on the 3.00-mC charge?

  A point charge of +Q is placed at the cm3f4 cudjz 62lm-fz ,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 is the magnitude of the force that acts on the center charge if a thiucz6 3 2,jzmm4lfd-cfrd charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC isrr*gu4l9 xv91fra4,qe eil ;m at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thexmv4 e *a9, r ;lref4q9uirlg1 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 is aicm1( p44oe aet (0, 0). What is the direction of the net force on the 5.0 nC char ap4i(me4 e1ocge?

  Three identical charges of 3.0 mC are placed at the verti, kxokg)r/a c2a*;p4h5tnz onces of an equilateral triangle which measures 30 cm on a side. Whacn 4/;g ahraxt )pk2zo*,nok5t is the magnitude 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 m. At w44havdpw0, h jhat point, on a line between the two charges, would it be possible to place a charge of -hd ,4pjhaw04v 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 is at x = 4.0 m. Wherezju*148c d bmjiz+:hx on the x-axis can a third charz4*bdz:j1j h8ic x mu+ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q rx,0m3mr *w0.c17jxlghah vape y1, 8xgc 9oois placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerhgrx9 ,e.h7wlgap,xm8mva1o1o*0cy0j 3 rx c o?

  A copper penny has a mass o2lla1nkvb7 s i)6 c/qi jm3ff/f 3.0 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 abrmi u, 3,.cjif:5jjn fixed proubjj cj5:,. ,imn3rf iton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a ke up64ydv3 3:pefd+dcommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and e3u4 de3pvk+:pfd6 yd 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 hapnt 3v 6w pvz3/(puj0ts a charge of +40e. What is the magnitude of the electric field av utn36p vwpjpzt (/30t a distance of 1.0 m from the nucleus?

  What are the magnitude an 2h(+b7sow vohd direction of the electric field at a distance of 1.50 m from a 50.0-nC bvo7+2 (shwhocharge?

  A 5.0-C charge is 10 m from a small testb2i2ei sv63dzuj h5p. charge. What is the magnitude of the electric field at the location o ph3us52j6iezb2 idv.f the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of tw2kb p0798pu d icufm)he electric fieldm)8ib9f0k7puc2pw u d?

  A 5.0-C charge is 10 m from a sm5;g x-bcjrb/y70sgmcall test charge. What is the magnitude of the force b;0byj/-ccxmrg7g5 sexperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of(dh (an96vh0zwmuy ,i 3.0 C and are separated by a distance of 4.0 0 dihu6,nm9w(( zavhym. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mazxsi* ;b*t 41qnmooox*b ty3j2(x4+jdhkt 5 erk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm marnih t;t1tq kbm2+3sb4y*xz*de *o jo 4j(oxx5 k?

  A 5.0-mC charge is pl;l b- 1x h.zfumgq4j2faced at the 0 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 is the e; 1gfz4b.l 2 huxqfj-mlectric field zero?

  Two point charges of +3.0 mC and -7.0 mCp7ppy- q(v) gycx kmn )+54dc.rkwa/i are placed at x = 0 and x = 0.20 m. What is the magnitude of the el m ykpc5vdq+i/rwg(- ca)7 4xknpy)p.ectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarebn(((od s5sa,7g4/lh g au did of side 0.50 m. The last corner is occupied by 7d4agndb5(/ g,l (soiahdsu (a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 yu-vk a)qi qco8ga4qxpv,*4 b+hpi / :m on a 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 mC at (0, 1). What is the magn4v *4+ /gq,vihx b iu)-q ypo:ckapa8qitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC man b,de. r--yd/v lx,3rcie*y0d 4muwhen it is placed in a uniform electric fia3bx ndm ,, ydme-rvc*4.eiyd/ru0l - eld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC havctbz1 (u w:8gs 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 6000 N/C dmg:sst*wo u+j43f 9 ejr;rd 1pointing downward. What charge must be placed on the ball4 rd:; *1orf+sw utsg9d ej3mj for it to be suspended?

  A foam ball of mass 0.150 g djiyl 9 g.)a4,h)zudh carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agadg4i uhl).dayj,h9 )zinst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge oib00 akww6gbgx h+ho7 r *d5-of +2.0 mC. What is the magnitude of the elect0kowdxggaor-6 b ibh057+ w* hric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whatt- hj9k0d0g nl is the electric field 6.0 cm fro00 tndlkhgj-9m the center of the sphere?