State the law of conservation of electric charg+- 0uk bzqwad4e.

  Is it possible for two negative charges to attract each otherg431bcrtku 7q?

  Is it possible for a positive and a negative chargez ,v.gr.q0k6ezs ws 4w to attract each other?

  A glass rod is rubbed with a piece w+l mfhwd,,u1 of silk. During the process the glass rod acquires a positive chargl+ m,wudwf,h1e and the silk

  A proton carries a

  The model of the atom show(pwat95osikp ,: v-qvs a

  A neutral atom always has3 ic20)m)d6h cohcybz

  An atom has more electronhz(9 fgzk/v piv(wr1f22390jhp dtop s than protons. The atom is

  Materials in which the electrons are boun ztmpah 89apwb. 103qygsm+4t d very tightly to the nuclei are referred to asa9msp081hat +pb qtgm3.y4wz

  Materials in which the electrons are bound very gg:vb:yi0cx 4s;1n ig loosely to the nuclei and can move about freely withinxg g0i ;gb:i14c:nvys the material are referred to as

  A negatively charged rof)p8j mr7owa* mm b8s2:yc+ wwd is brought near one end of an uncharged metal bar. The end of the :s w+ ma)8cm mp2jw8 y7wbfo*rmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive cha9d5( hrf 7zkfjrge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that9j df(r75fkhz is grounded. Which statement is correct?

  How can a negatively charged rod ch5v dtqdkh)60jv14 vooarge an electroscope positively?

  An originally neutral electroscope is briefly tou0 z*ilpa1mj;,dy 6g xxched with a positively charged glass rod. The electg 1 ,dj6;*ixpxzyl0 amroscope

  An originally neutral electroscope is groundeb v(r idb+0+dod briefly while a positively charged glass rod is held near it. After the glass rod is ri bvrob0+dd(+emoved, the electroscope

  A positive object touches a neu+pf jv8c mr1tyg7n4z,tral electroscope, and the leaves separate. Then a gc rv4 8j7,m1tfzpn y+negative 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 table. A neutralb8e4)x c tzyvh( 4 eb/rqnlowq( f(/-r metallic ball rolls straigh4(brez/- 8 obtrcylf4/v h w)(neq(x qt 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 charge on each ball?

  Charge is

  What are the units of. jcofxukkyr/m1* :9 w the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dise q,5h*r i5(j6hxqi jktance d. The first charge is larger in magnitude than the second charge. 5j5,k*ih(x6rjq qeih

  Sphere A carries a net charge and spprd, ,ly3zds*fai78e here B is neutral. They are placed near each other on an insulated table. Which statement best describes sepfl y*7ia8z d r,d,3the electrostatic force between them?

  Two charged objects attract each otheif *wpo-m9 239fgpyrlr with a certain force. If the charges on both objects are doubled with no change in separation, th*rf- owl9 ippm39y g2fe force between them

  Two charges are separated by a distat bht3bx2c 6x5nce d and exert mutual attractive forces of F on each other. If the charges are sep6bth 35c xtxb2arated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thet3j ;ztwa11 7k6o git;wm dza1 force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is1dji;3tzog 1 amaw6 k ;zw7t1t reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated d0ukteg,rkt34 7esp,m 0 w 5uxby a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fir0te wkk,xg5 7r e pu0t3,msdu4st electron?

  An electron and a proton are separated by a diiokz j.c)ttq5 xcu7l: k +l u1*6o)-krheujg3stance of 1.0 m. What happens to the mk- .+ci *7k)ke 3j6q1utut5xco: rjug)llho zagnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton fc*lu30a ym,y are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the p3*cu mfy0yal, roton?

  A point charge of +Q zl2 3;+ rn3-khrq9fqke .m vqxis 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 acting on the positive charge at the center of the squaq +;k. nf9qzhq 3m3-k2r relxvre?

  A point charge of +Q is placed at the centroid of an equilateral triangx wqel5v;vxyt z3q( x8h* .af5ethu6 ,le. 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 one of the other ve *yfvtw,xh(qz8xe ;65 q5v. t3ahexlu rtices?

  Which of the following is not a vectt7 4e7stw8h soej 19yhor?

  At twice the distance from a point charge, the strength of the e3qibioybc66c 2 cnnm,i1-x o2.f f kt3lectric field

  Is it possible to have m1 *1rr u3+emcj as(gma zero electric field value between a negative and positive charge along the line joining smu 1(ma+m*31j rcgre the two charges?

  Is it possible to havu d8eep85(p;h : ( fswcgha(cde a zero electric field value between two positive charges along th8 pcdd8scp((wfh ;:uha( ge5ee line joining the two charges?

  Electric field lines n5l; v,s/-zjlufcb cb2ear psitive point charges

  The electric field shopq6dre ccu dx :75c,ysi947dfwn

  Can electric field lines intersect in kh 19)pjwiddwh* .ccu1/bjl. free space?

  A solid block of metal in electrostatic equili/rk ik / .y8:r qb9uhazsl-lu;brium is placed in a uniform electric fie-.9r ua;iy/k/h:qz s klb8rluld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of )x2r5 bw/v nk ze(h86c vt9gyqequal diameters are each given the same charge, the electric field (E) midway betweeb tc8 hy vzeq x/96wgvn2()5krn the center and the surface is

  A cubic block of aluminum rests on a wooden table in3a,tm-h sn3q c.s/h mq4hgidh f3w2+5 0t hxwr a region where a uniform electr,- w3 /itfam .3qwx2h g +0r3sh5mtdshqn h4hcic field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elfcbzpo55 ,sg:w ecv:9 ectric charge

  A positive point charge is enclosed in a hollow pflk (ly-k z8f,6e+yimetallic sphere that is grounded. As compared to the case wit6- +l8yeplkzyf,k( ifhout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriujd)xyj rbs4 - yl-;2dfexe)f/m.

State Gauss's law.

  The charge carried by one vtgm3qyp jif w:dq1 2a-2+ 9gjelectron 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 mo*emv xb2q 5r jvx1rc:t31tzq*re protons than electrons does this1xb *cx3 r zqqmt2:e *vvrjt15 piece of plastic have?

  What is the charge on 1 kg of k y7j4:prq ;dnr 2x.czum71xbprotons?

  An atomic nucleus has a charh9jpn:41 mc c(b+rukhjdn0h( ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepfa3f5nhz ug 7 2uc 8omsj *3rs*lz/8kzarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweenkuno f8/lsz gca3*j*728s fmrz5z3h u them?

  A 1.0-C charge is 15 m from a second charge,kt.22ppa x ;fxdyhq90 and the force between them is 1.0 N. What is the magnitude of a2 px0qfytdxkp. ;2h9the second charge?

  Two 1.0-C charges have a force between them of 1.h26 4e o)0kcf9cycgot l+spw-0 N. How far apart are they?

  The force between a hp6 rhmnpm) y-5 -;(lqvidxd *,h t,e 5t1like$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiall y970vz j6pgxly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, 7l gxvz0 y9j6pwhat is the electric force between them?

  Three identical point charge, 9r-bh.msfday 6 i*nes of 2.0 mC are placed on the x-axis. The first charge is at the orii9 n-ryas6em. hbf,d* gin, 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 which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 av;n4v-) cj*b tpohf22 tz5uemC 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 and direction of4ta5;bu2 zecn2o-*hjptv ) v f the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = v4ktgfy;-e :aefb/i( 2.00 mC at x = 1.00 tbv(i g afyk -;ef/e:4m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. 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 square, and a second point chpoclq2* 0qira ie0,+6gdbz, marge 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 ap60izm+qbgc d ol ,re,*i0q2 -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -:gx9 2d(jyj x5nd3lmd1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC nd:d 5lmx2(gyjj d39 xcharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,stt, 8br)b myrat;.:bajwbm8 01r +ew 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the wt,m: a j+yb)abrt s8emr08b.tr w1b ;direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC h0hk7l3qyda2aa9 o+ m qads.9 are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What m dh yas a2a0k lqd9q.3h+97oais 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. x9pzzk8s/( /dr c xdnedwe*5) At what point, on a line between the(xw 8kdr s/)9c5z */znpddexe 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 is at x = 4.0 mi4m 954g )lp.gpe ,g9viur vqg. Where on the x-axis can a third chagm9g, vglpi4g9vui).4 e qr5prge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is /:e3 :hd0wh nhke zvy5placed at x = 2a. Where can a third povh k3hye/e0w::5 hdzn sitive charge +q be placed so that the force on it is zero?

  A copper penny has a+/r6*c b3ln-xt qq,rzb o 4h 0i2d fvhbomf6:r mass 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 attraction of a fixe 3h2az0r+qcqiyt bf)+d proton some distance above it. How far above the electron+0b)r3ci +tzhqfy2q a is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonv7 0ohmlzwr 64conducting threads which are 30 cm long. Both are given identical charg6 vhr wo0lz4m7es, and 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 has qjhwfs2 j / c729s1en9;vmwcya charge of +40e. What is the magnitude of the electric field at a dista;2 7 nj 9cwq/svj9 cmhwf2sy1ence of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fiel kg+,/n :wa,hmi9hlcf 0 qgfb25ndb /kd at a distance of 1.50 m from adg nkf:k /l q,wfm,h9cb+bih5gn/ 02a 50.0-nC charge?

  A 5.0-C charge is 10 m f y m ip*l)djelr,6q hm5dq.x/,rom a small test charge. What is the magnitude of the electric field at the location of the test charge,m*.im lehyrl d ,)/jxd6 qqp5?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of theqd; c9ikg6j6 y electric;cykdqgi9 j66 field?

  A 5.0-C charge is 10 m from a small test chr.;emf 0phhi as m52e2arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loc 2s2e hi;p.hmra0 efm5ation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dis2t5 hx6ec) g8guxveh1tance of 4.0 m. What is the electric field at a point mc8xhg)e g1xehu6v5 2t idway between the two charges?

  A 5.0-mC charge is placed at the 0 cm t.yxls2 tj)i h:;kto/mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is tsjxh/. 2 yottl; kt):ihe 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 -4.05g /h.jgdfa jq vf(:bb +qqn2k+,k)h x mC charge is placed at the 50 cm mark. At what a :+hf,.5jn g fjq/hdkq)+bqg(kb2vx 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 x = 0.20 m. a u wasjl974m6 What is the magnitude of l4jsa a6 w9u7mthe electric field at the point midway between them?

  Three 3.0 mC charges avyw/ d*+suwzu9b23a .( dawrwre at the three corners of 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 squarewru.sy2wbdza+/vwd 3 (*w u9a .

  Consider a square which is 1.0 m on a side./o o jaqs(7/:r,jqeyn 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 magnitude of the electric f 7ajos,/qoj re nqy/:(ield at the square's center?

  A force of 10 N acts on a charge of 5.ttae88va17 gzi8 / czu0 mC when it is placed in a uniform electric field. What is the magnitude of this electriizzaa8v/ ut7e88t c 1gc field?

  A particle with a charge ofd4paw7z1 f: -7vlrr yq 4.0 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 ma f8unydt/g: h2qme3 7nss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must beg:dtnf32 8nm7yq eh/u placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The b o/md2fj6 ua(aall is placed inside a uniform electric field, and is suspended against the force of gravity. 2d( 6jaumao /fWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnite7o/3 erg4h3 zr :laweude of the electric faegor/37:he3r4w z elield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 qpu 5-pof8+;xe kqf+ 9m6afup mC. What is the electric;p-o+pk9euaf q x +56p8fmufq field 6.0 cm from the center of the sphere?