State the law of conservation of electric iuir:/wi1g :aboy *4;ozi 24vtx6 wlmcharge.

  Is it possible for tw2erhkc;+ o t:zo negative charges to attract each other?

  Is it possible for a posivz9ofz i6,8g ptive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During tw,j( fmkbus (6x18 mtjhe process the glass rod acquir k (utj(jxwbs6fm 8m,1es a positive charge and the silk

  A proton carries a

  The model of the atom shows a p2qj8 veev1voaz8 :9wwh*a :u

  A neutral atom alwaymf +*ygkcqikrws)/t)l /-p )ns has

  An atom has more electrons than proto5uuf0.o,zrm3g t zbkl)+vfj/11g mp wns. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refer)llzyrl8tv k6b5s 1eay;v:4h red to r56l 4hbl vv1l)s y;z8aek :ytas

  Materials in which the electrons are bound very loosely to the nuclebk: 8i0 v:ez3vvwl5rv )iqk4 hi and can move about freely within the material arkq: 3 kv08 z:w4bilivh e5)vvre referred to as

  A negatively charged rod is brought near one end of an unch-e/ytqb v+ q3x-e.lyn arged metal bar. The end of the mybe./-xq neq3-+vy t letal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and y:pn45k ajh5e8/z h :vhiy pr)sphere B is neutral. They are placed near eacpeh5i5h v)k48nayz j r/: :pyhh other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargl06/ ltihs l*jed rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a p-::yb;lnq ck,c-d5eb7+iz pbzf je2z ositively charged glass rod. The electroscopfckc7nz:2y:; izz,5ljq -b bepbd +e-e

  An originally neutral electroscop2cnfw+ ai 3,/.ml j3 jvo7yn )z pwj+w/sxr)ere is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electro33ci+j oz.f2/jjnr, p+r ywwnxmwl) av7/s)e scope

  A positive object touches a neutral electroscope, and the leave qxax /7re7:d. *c;mb k+brcs /ja8bwes separate. Then a negative object is brougxewjdxab /mr; 77e:c/ bs *cb8.rkqa+ht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insuhs3t) mk3w4 mrlated 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, ts4mkmr 3h)3w 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 Coul1 d xdu9yzd1.somb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fjw+haum9kup4fpw:+/ uf ia, +irst charge is larger in magnitude than the se +pp+/w: wijma,f a 9u+kfu4uhcond charge.

  Sphere A carries a net +im6 c+t t mqd-k+fhy,charge and sphere B is neutral. They are placed near each other on an insulated table. Whichiy6ct+hkm++ -m, f dtq statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on 5hk6m a 5emqh+n+bfo 0both objects are doubled w0nao5hfehbk+6m +qm 5ith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivezhu5k -4g+ow- y/etnx forces of F on each otherke/h+zy- n4x-w gt5ou . If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects ate 8 q-com/l+y/ kx8ymvgtv 51dtract each other with a force F. What happens to the force between them if on-mxq dy m/t/v+y8e15l8gko c ve 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 zoqu(.vcqk sz):0 li6m )bq5uhappens to the magnitude of the force on the pro 5qkv:o)0lbu() szqu.zi mqc6ton if a second electron is placed next to the first electron?

  An electron and a proton a88jcr mfl -g+mre separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second egc 8j+lm8-m rflectron is placed next to the proton?

  An electron and a proton are separated by a distance of dxi6 ,meg0ay2w 9sf cq;g i,g;1.0 m. What happens to the size oicmfsg i , 096aygde;w, xq;2gf 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. Wr:eu:bz:,zz4q b h9*wh.sn axhen 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 ox4e,b z.h9wb : u*q:rszanz h:f 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 an equilater+odt w4u9/ o,5*elf (rbiu okmal triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 k(romo+btufl,o i95/ d4 u*weN 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 notbpd4(vslqb(y q d. n)1 a vector?

  At twice the distance from a point charge, the strength of the electric fieldyebz 6ctaf3:g/y)r(d

  Is it possible to havevu-4uzyw2o p lf(a33n a zero electric field value between a negative and positive charge along the line joining the two chargeso3f3z4u(-wv a pluny2?

  Is it possible to have a z+ 8uke9. )nlmeqt ls0 ,gpme7rero electric field value between two positive charges along the line joining t9.kq0lpt)e+er7m u8 m,nels ghe two charges?

  Electric field lines near pcfiv(nm5r:rc p +*c0v67 kcp rsitive point charges

  The electric field shoel2* nww0kla* /qe:c)a 4r pzswn

  Can electric field lines intersect in free spaccrkw trw/qu 3 (svy(r (;9ciy.e?

  A solid block of metal in electrostatic equilibriuqb i(8j b h7-rceha;pabu+4q-m is placed in a uniform electric field. Give a statement concerning bhu rj(e-p+qb 8 7ahqcbia4;-the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet;qahf) acqg+ kd3ux6 864gf2rnh/ t saers are each given the same charge, the electric u/r);nhha 862dqgfa+tf k64g a cxs3qfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unif wvzja*68(lj ynzk* )jorm electric field is directed straight upwardzany*w*ljzj)(v 8 6jk. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrz9iw6xcmd ,3x6lu 9av ic charge

  A positive point charge xaxk.9aw n31mm)d 7w vu9(b auis 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 d1xwm ax.au9wvn mb()ak3 7u 9sphere has

State three properties o p(.bi) k7 .jso6.vgr6 vbjdrxf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one el. 9fuk1o-z;qs 1fipxj*urx u( ectron 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 te deo7g-yhq17c)ykl)han electrons does this piece of plastic c)17eogq hlydy-) 7kehave?

  What is the charge ohzw (zk2+ 3 zgzk)q4htn 1 kg of protons?

  An atomic nucleus hasxr w1z9 4fu(ew 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 cma2v;5 uvsgt6v, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of theavvgt 62 usv;5 electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between,s 1ard -j/(coiwiph-v 9v5cz them is 1.0 N. What is the magnitude of the second charge?vpc1z/iwv s5- i(-crh ,ja 9od

  Two 1.0-C charges havjjm 9vndb( kw3 .bq3,+sr1gw w )wm5xte a force between them of 1.0 N. How far apart are they?

  The force between a g laiw1u;9 2p.6lc jpi$30 \; mC$ 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.5 js;1 dezok/1r8wkfw If they are moved to a new separation of 8.0 cm, whfw dro /1 1zs5j8ekwk;at is the electric force between them?

  Three identical point charg msh)nn1pw0j s31z3 vdes of 2.0 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 andwsvm 01p3s1n dnhz3j) 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 placed i u r9h;84aftxmj;5c,mpaj y*at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 cj; 5ytr;9u xa if4a,mmj*h 8pmC 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:v ifoi88i)cm/d*hx k- 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. i hc*-km8ivd8fiox)/What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a s+bhwbii ) uzum1m-)p( quare, 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 t)zimmuu+ 1i()hw bbp-he 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 cx6jih1-xr;s= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of t-i 1;xjsr6xhche net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.301ryg++ahrl1 pcije* ; b4tp 4f m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force y ti;a1r+c4 hl1pb4jgp f* +reon the 5.0 nC charge?

  Three identical charges of 3.0 mCp hq*wzsj 8q)e .,abm, are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the mapeqm. s)aq*8,,jwbzh gnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q brc*h - mz+ 0vq-s5wpoand +4Q, which are separated by 3.0 m. At what point, on a line between the two charges,-0pqvso*chwm5-+r bz 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 ar/s * 08fssnmkt the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is*m0nks s s8f/r zero?

  Charge +2q is placed at the origin and chargen:gm5tq .co(w -q is placed at x = 2a. Where can a third positive charge +q be placed so that tnomqt5:wg c(. he force on it is zero?

  A copper penny has a mass of 3.0 gobsj*a:6vg 5qksma97. 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 byp7e7el/ x/bg -wwfh5)ykewd ( the attraction of a fixed proton some distancep7k e )w7/egf hy-dbx/w el5(w above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconfiri nyzq/;:7 ducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsn7r;ifiy /q :zion 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 wg7o:k q;+xv0b4d:.laktu/k(s u9pjnlv ca5 charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleuvn(ptlaku ::ba 59 k0d u4wq7gj.vl+/s ;xkcos?

  What are the magnitude and direction of the electric field at a6gjn6 ewl3. tcrl-p v0r9 ;if/qas5tr distance of 1.50 m from a 50.0-nCfe.6l3;09j5 -tw6nga rt lqvicrps/ r charge?

  A 5.0-C charge is 10 m xh:xu *gq5uhs130qjufrom a small test charge. What is the magnitude of the electric field at the location of the test ujx0u3h qgq hu51:xs* charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dxnc x,br1s+ (ac:d fq qk+f15h my11fbirection of the electrimc dx5: 1nq 1 xybfr(c bkf1,+fhas1q+c field?

  A 5.0-C charge is 10 m from a x2r ogn1sc7*3 lt9ht6cuyu2dc d-v)q small test charge. What is the magnitude of the force experienced*x9ro nl2v-32 d1ty7dgcus qu) t 6hcc by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separata:+/cg5 rj ,fbgfh :axed by a distance of 4.0 m. Wha/ j:+ arfag:5hbcgf,xt is 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 meteh5yq )h3z 5g.8lxcdo2j oo ul2r stick and a -4.0 mC charge is placed at jl h2cugy o5l32qdz ) h8oo5x.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 mmi on+3rr9v;e z2yq e7wot+ 9eeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two che+o w79 3 t2+eiv;qm roer9zynarges 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. m p*6)voyi(vp 5dte )p What is the magnittvvp edi6(p)*mp) oy5 ude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50-tr,xz 3 d6khb m. The last corner is occupixkt zbh,d6r3 -ed by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sv 4 e3un)prce:ide. 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 (1,3nc r:uv 4pee) 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 (ad:ch: rc2d.e:a tumin a uniform electric field. What is the m2et( c:m:c:dr. hd aauagnitude of this electric field?

  A particle with a charge of 4.0 mC q,p v:9c/zstvhas 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 eler6 e z;/ga2oiey/l,+lfn nv8tg c:+skctric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?:tl gycgi/fzv;ne2 8len+ kro/as,6+

  A foam ball of mass 0.150 g carries a charfa o ipz0,/:eq1oj5p cge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitz:/ qp i10jeacpo,o 5fude and direction of the electric field?

  A metal sphere of radius 10 cm carrxin (2oz*2.7aztt qewies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sueaz.2( zton7w*2iqx trface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What isd8f+mn-t5eoy w;h pr ; the electric field 6mr 8df;+5h ny;wtp-eo .0 cm from the center of the sphere?