State the law of conservation of electric charge.pn k/zoy l .j,q7h3mwu+,pb 6n

  Is it possible for two negative charges to attract each1d0 yd1pr 0rlb7t5fg wm7its8 other?

  Is it possible for a positive and a negative charge to a msu1smc;i j(5ttract each other?

  A glass rod is rubbed with a piece of silk. During the process the glas8jrvso5.3 qeds rod acquires a positive charge and the silke o qs.5d83jrv

  A proton carries a

  The model of the atom sk +icu2c(v :qjhows a

  A neutral atom always hajf wa(a7w7v.l8 j1hmms

  An atom has more electro-s9p n4sokkk-ns than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei a;a( yr:zzq5+o4t ffo8ki8z hcre referredro 8: f8+; 45oyh ktiafz(zqzc to as

  Materials in which the electrons are bound very loosely to the nuclei and canfiw n;tq(5 6vf move about freely wi5v(nwtq f6;f ithin the material are referred to as

  A negatively charged rod is brought near one end of anz*ur7uvnx30 6 y5h:eg slug 1y uncharged metal bar. The *: ug0y x uh6zyg17srl5nv3eu end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar;1a rr( b(s+nqroez m2e placed near each other on an insulated table. Sphere B is briefly touched witnzsr(bqo2 a; m+1 (rerh a wire that is grounded. Which statement is correct?

  How can a negatively charged rod c4p: 9gz zvypf mrd./7dharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiij-m z ,it) rjm1h.qw9vely charged glasw.tmj9, z-)h1r q ijmis rod. The electroscope

  An originally neutral electroscope is groun-fr zj.n( t)pjded briefly while a positively charged glass rod is helpf(zj) .-tnjrd near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sevm0 +xolis713 eogqk4 parate. Then a neg01q+go7ovxem i3s4 lkative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabld+-z (ex * :oqd6zntfne. 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 dz+*qt zo (d6-x:fnenrolls 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 Covmupv+*hl +p s)r*lh-ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distw :dyw7 cpkw/) ;tiw1bance d. The first charge is larger in magnitude than the second ch7wiyk bc;dw)p1wt :w/ arge.

  Sphere A carries a net charge and sphere B is neutral. Thebfwhn2jh 87 ,oy are placed near each other on an insulated table. Which statement best describes the electof h82bh,7j nwrostatic force between them?

  Two charged objects attract each other with a certain force. nkr jey;6+7ss If the charges on both objects are doubled withenrs 6 yjk+;s7 no change in separation, the force between them

  Two charges are separated by a distannj i mpd oiscb*p0+br/ 64fm**ce d and exert mutual attractive forces of F on each other. b*dfop6r/4 *i0cm sn pim+*jb If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each o8 aan+cimz /6,i*rnp yther with 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 one-fourth its original value? The force is now equal to*acm/ipza6r n+i 8n,y

  An electron and a proton are separated by a distance of 1.0 m. What happenz 8(c2d;y4a bp7tu yuas to the magnitude of the force on the proton if a second electron is placed next to the firstuu47y z8(b a2py atdc; electron?

  An electron and a proton are separated by a distaxo w*v5xu;rb5nce of 1.0 m. What happens to the magnitude of the force on the first electron ix5o brxvu* 5;wf a second electron is placed next to the proton?

  An electron and a proton are separated by a4xv1 yqha2 -bw7o*.hjzsma1 v distance of 1.0 m. What happens to the size of 4v7aymaz h-x1bv wh1 *so.2jqthe force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q i+evu1,;ku68jl(rka -pu jhe ts 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+;lkt jr8k u u,e1a-hej(vu6 p acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Whp2npx7 zg r-g-en 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-p2 znrp7g- gx to a third charge of +Q placed at one of the other vertices?

  Which of the following d u*rllr9jfh+wcq: ;9is not a vector?

  At twice the distance 0s6 )xd,kg7sodzco a+ from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value -c)htlx) 9 qj rganoc6+i4+isbetween a negative and positive charge alongq4 a+ i-9hj ct+s gnc)rx6oi)l the line joining the two charges?

  Is it possible to have a zero electric field valueap3y abvrez0 7b0aiqhm*5(e7 between two positive charges along the line joining the byia *(7earzbmaqp3 hv7005 e two charges?

  Electric field lines near psi-c kf.jnyvy; ulct6-izve*g y )3k 7;ztive point charges

  The electric field shown b kra2)1cfod;hz6,nb

  Can electric field lines intersect in fr*-k grpe 5umy3o hm10)-wvguuee space?

  A solid block of metal in electrostatic equilibrium is placej(o/crk py) .ud in a uniform electric field. Give a statement concerning the electric field in c.uyro /k(p )jthe block's interior.

  If a solid metal sphere and a hollow metal sphere of equxg(m*(u kg7/8 wlhyk xal diameters are each given the same charge, the electric field (Ewx(u*kg/ 7mx (lyk gh8) midway between the center and the surface is

  A cubic block of aluminum rests on a woodf,+mc2 frcch ((onw:ts.evd -en table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's to .2cc(sv+wnfhc of dr-,:e(mtp surface?

  If a conductor is in electrostatic equilibriumxcbng w ald(u;hi/; lr4lrsae* 4,4k6 near an electric charge

  A positive point charge ii xy)fokzt 4d )5:d;h- jpkxxm/ eh7(is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow se )idm /yx4 p:t;(-kz7xxdkjhoif h )5phere has

State three properties of conductorbgv2rb6 u0om /pn4mczyu q1- 5s in static equilibrium.

State Gauss's law.

  The charge carried by one elecdiea:* (yaa zzs3f p+1tron 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 than elejq jcl-m7faogpd n7(bp u6-ub(o5 :k +ctrons does7 (p7m fu-gnpqocb-lajk5:6( ouj bd+ this piece of plastic have?

  What is the charge on 1 kg of proh,bk cy ;s22oe7e/mgwtons?

  An atomic nucleus has tgju,y uao,(i/+cd -r 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 and -4.0 mC, d mkrm7 tfo w:b1+y-5j;,d-9zdp bn;bvq2gxirespectively. What is the magnitz1-b+r9b 7dd-godb :t;vmjxqnk ,yfpw;i 2m5ude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forvpa*lt(u9yd( i fls9v2va)8hce between them is 1.0 N. What is the magnid*alf tlu89p( 2) (vs ivahvy9tude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Honl p)+qd6lk-zxy5 8i lw far apart are they?

  The force between a y;9 qd3te*x,nt1roy j $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2f) j82sj aufdqpf ;0+d*/ opmi.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is th pfam+ dq)p/8 *ojfui2sfjd0;e electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first fq;03klv kapdd1 8 t3acharge 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 v;d18kk0ldap3qt a3 fwhich acts on the charge at the origin?

  Three point charges are; fc(6li;d; hhjca :dd 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 j;;fldi;h(6ac dc h:d mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges myyg+k3 u:nnwic7hog6 fk7t* r- c1c, are located at 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 i7kch-un*t:g 3 fny c m yri,o1g+k7c6ws the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center orktea2 quj ,x+ 8:hc3c7; 45xmu ysnyrf 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 third charge of -Q is placed at the lower-left coru87xe;j+5 yyqtca4,h 3rucr x2 mn:k sner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = zo+qts/q ) rr1-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is t) q/tro1zq+rshe 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 n;9n ;ig*zog7i0ktqy80l xqoat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wh9i otqgl0kqxin7 z; 0og;8 n*yat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC a j-yeo-x6hks 7re placed at the vertices of an equilateral triangle which measures 30 cm on a side. What i - os-xehkyj67s the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sew3rv: lz9uguzrsbp7 -i. v *:uparated 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 electrostatic force acting on it iu7l-vz v .w*9r bpr3:zg:usuwould be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at.a /0,:rr 54prmmt sxll r:0vw kmitn) x = 4.0 m. Where on the x-axis can a third cha sn:lpv4mawxrr/0.t :tl ,rki) r05mmrge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge c2.,wlxhg capi3,pr 0-q is placed at x = 2a. Where can a third positive chac.wic a,x,pl r23 h0pgrge +q be placed so that the force on it is zero?

  A copper penny has a masuk83c3vm6r g rs of 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 attra jshgl/d1xp18duj b65 ction of a fixed proton some distanc 5 pulj61b sx8hd1j/gde above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a co b+,7iluhnep7f5/nkommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion /lk7,5 pofnue ni+7bh 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 ett4z/- r;vpx the magnitude of the electric field at a distance ofet xzpr4;v -t/ 1.0 m from the nucleus?

  What are the magnitude and direction of the hywu9s.(vez *electric field at a distance of 1.50 m from a 50.0-nC charzhwv9 (y.u*e sge?

  A 5.0-C charge is 10 m from a small tesi8kubv8 szdxq4 ta9 ab w:(0a7t charge. What is the magnitude of the electric fiel b8 7xaz uw:(4ai8 0vsbdt9kaqd at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction * f;d-x9qqlrr of the electric fi lr;r9d*fqqx- eld?

  A 5.0-C charge is 10 m from a small te --.rvcye 4 q:noy+;eq7hd.zobrth*e st charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tesr q-o*e4ebcv y.7:+;r.eyh- nqtzhodt charge?

  Two point charges each have a value of 3.0 C and are separn ggc 8+g(*nsu1i,8wap(sf9g u1e c miated by a distance of 4.0 m. What is the electric field at a point midway between the two chare88w9 1nascguc* , i(ggi1(fs g nmp+uges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stix/d hgy1,qqh( iv9t(hck and a -4.0 mC charge is placed at the 50 cm mark. What is the electricq x1dih(hh 9g/qt yv,( field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a g;q8s hut6 jla+j4 e0e-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the el8uqs; t6l+0ee4ajjg h ectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at c)s71o5wyii f o;h7h6 9 jsuqes4hiw.x = 0 and x = 0.20 m. What is the 74 w6hu.s)s9y5cs i7hwfo ;hq ieo1jimagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners o4-e*ttr50 8nmfy jwopf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squareewt*r 8ynot04fj -m5p .

  Consider a square which is 1.0 m on a side. Charges are placed at the corners oj z+(tqwap9v+f the square as follows: +4.0 mC a+ajp9z+ v q(wtt (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 placed in a uniform ele 1y,:zo:y padtctric field. W1z: yo a:t,ydphat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of :e -cl7ua4, jgn-aj lw$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g ir4fag4onh7x) s placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for4o7)4fxanrh g it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed in)ifs:w(z z5 sqside a uniform elecqws:f z5(s)zitric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +o 9r4+qjoou5a 2.0 mC. What is the magnitude+o orq5ja49ou of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriezeh4l q1r2mmck ,u5w 2yj aqp/d2 yk6-s a charge of 3.0 mC. What is the electric field 6.0 cm fh 12p2/-qyrum5c6 zjke2y 4aql ,w dmkrom the center of the sphere?