State the law of con jmj*v8r ,jyf0servation of electric charge.

  Is it possible for two negative +gc4qeb,yay) charges to attract each other?

  Is it possible for a positive and ap*59ipz44 t joz3r tht.qjdq5 negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process thn5wpmzg+* q tjo1 0s 4+jk8pnhe glass rod acquiresn4 0joj+8kpgzh*wt5s mnqp1 + a positive charge and the silk

  A proton carries a

  The model of the atom sei;z/a ,lu *zoy)v no7hows a

  A neutral atom always h2) c2p6g hu ;vh .yjhol9u)szsd83ma mas

  An atom has more ele3lchfg *c u kyg+-.cz.tk/f 0ar5+n wvctrons than protons. The atom is

  Materials in which the electrons are bw*:jn krs 0(wgj0x,vlound very tightly to the nuclei are referredl0vwjsg,x* (rjn0w k: to as

  Materials in which the electrons are zi: hi07td 00(t7viate (a xidbound very loosely to the nuclei and can mo:v ei(0xaiz7t 7h0 i(adtid0 tve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal q:xt bdelqlm+as7 -:b( 7 u1)wkk :rlsbar. The end of the metal bar farthest from the crsa l(q7d t:+b:kl-m)ues wk 7qb: 1xlharged rod will be charged

  Sphere A carries a net positive charge, and9h 6e b*3zronp sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that ish6rz*b3 p eon9 grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos6bj6,e- zv crvm 6/t i+fexeq+itively?

  An originally neutral electroschx*07 jf nk p.7dfu5gklx0 c6oope is briefly touched with a positively charged glasf70kx j o6l07 fpgdn.h*xuc k5s rod. The electroscope

  An originally neutral electroscope is groundeduz.)jjb7issyr65bb00u- cm c j/3b al briefly while a positively charged glass rod is held near it. Af5cbaz/ 6bujsiy-)rum7j bcl b.0j3s0 ter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and quo:ng8 6 a.vnthe leaves separate. Then a negative object is brought near the electroscope, but vqo8 a n.gn6:udoes not touch it. What happens to the leaves?

  A large negatively charged object is plac. rol5f,7 hi(gohw44fc3ut dned 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 fi3w ,fguhdni5 (tfco.7 lr4oh 4nal charge on each ball?

  Charge is

  What are the units of the Coulomb c0+nnm3t*ym v5y-5 p a 6jszqwlonstant $k$, which appears in Coulomb's law?

  Two charged objects are separat0jmx5qo- g(n9;) kxtft) mym sed by a distance d. The first charge is larger in magnit(sxnt tk9qx )0omfjmy-)m5g; ude than the second charge.

  Sphere A carries a net cu- 1wllj iw18uharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic wl i1 jul-18uwforce between them?

  Two charged objects doj :, dus.ui.,z bjp;attract each other with a certain force. If the charges on both objects are doubled with no change in separatioz,sdubjd iu;.:j o.,p n, the force between them

  Two charges are separated by a distance d and exert mutual attrlitazc 0v6oqm 3 ng4t j;,fd9.active forces of F on each other. If the charges are separated by a distance ;3mjtdzano,4c fivgt 6q0. l9of d/3, what are the new mutual forces?

  Two charged objects attraco8 cqx;puk5jsay(4 rel-s dt.+50vie t each other 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 origs58i tl4+yps-c0jd5rkqox a. ueve (;inal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happews:mjp;x-0 e7qt+(5, fl wi+ f.idl5kayud j xns to the magnitude of the force on the proton if a seldap5eux 57fq,i+kmw l(ij ;x+-d 0.yw fstj: cond electron is placed next to the first electron?

  An electron and a proton a* 0wpx qu0*bg qdtpa7/re separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second wx7pd t*0 g0/pquab* qelectron is placed next to the proton?

  An electron and a proton are separated by a distance u;iy uk93 q(pb5pzrd5of 1.0 m. What happens to the size of the force on the proton if5q r;3kb5zi yupupd (9 the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. 86ma/nrh dq vx ,vkse3 *qde:v7 k o5+az6wyv: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 emov /nyv+:se kzd h8 a 6qk :rwv7qd,35v*a6xat the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle.vsi; sb4gyd8*utb5n. When a second charge of +Q is placed at oneb*s.s d5;giu8btny 4v 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 -gqr2czzzwi 11 mw) )hnot a vector?

  At twice the distance from a point charge, t9. /wab:e8 yj5eak uwnhe strength of the electric field

  Is it possible to have a zero electric fijx;; :mamk;xield value between a negative and positive charge along the line xj;ik m:am ;;xjoining the two charges?

  Is it possible to have a zero electric field value between two posit( md xdjlw9y*be+;c1;4pcd/d j -ttku ive charges along the line joining the eudbctd 4/tc-p l*;ymwdk9(j1dx;j+ two charges?

  Electric field lines near psitivel /n.i ltp0whh0bp* 3s point charges

  The electric field sbzhg5;2 etopfdv(- * zhown

  Can electric field linest5 w75mcd.rtkrb9 j8d intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform.ta*i o,9x jy.-s ksaj.eg 3iu electric field. Give a statement concerning the electric field in o .ja9j-*. 3ysuk seixt,.giathe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamef(3ku-t rln cno4+m1cters are each given the same charge, the erf u3nl-o 4mc(1kntc+lectric field (E) midway between the center and the surface is

  A cubic block of aluminu9r32glhy+ epglo -e-qf ()k ufm rests on a wooden table in a region where a uniform electric field is directed straight upwarf)g kel- 23gfyl(o qu+hpe r-9d. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr luj0/*)im4re sxp.piic charge

  A positive point charge is enclosed in a hollow metallic sphere that is 0r3nhr9 xv)jg9 e:giogrounded. As compared to the case without the hollow sphere, the electric field at a point directlo v9i9g ):r3xe ghrjn0y above the hollow sphere has

State three properties of conductorg:x4 lifpv0p(53t bi gs in static equilibrium.

State Gauss's law.

  The charge carried by one electrosruol( u8 w8b-n 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 hatgkx-luooi dc7nq0vpq9 f 20+:5 8f sis a net charge of +2.00 mC. How many more protons than elect0oitkl0qsop ngd:fv i5cf qu 28x+-79rons does this piece of plastic have?

  What is the charge onjy( n9z6 2*tw*tfkw1 dlk0 2je 7xsbu .pwxlm2 1 kg of protons?

  An atomic nucleus has azv7 l299f a9js: gotthaq) r(a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se1n abif ;k m,ut, 6m08xzs81cospgr0fparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitn,0bt0k uo;8sa81gcsm zi1r, 6ffm pxude of the electric force between them?

  A 1.0-C charge is 15 m from a second iz9eu8r9.h o,sg7 hs*fjh0ad charge, and the force between them is 1.0 N. What is the magnitude of the seconof.d9, he*a rsjh78zg0isu h9d charge?

  Two 1.0-C charges have a force between themroi 5 f*+2qmes of 1.0 N. How far apart are they?

  The force between a vp4pvm 2x; g3d$30 \; mC$ 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. If thr.p1 x7ot9x wekficz2(vyco:8x+x w6ey are moved to a new separation ofr veto . :6ix 2o+p9c87c(x xxy1kwzwf 8.0 cm, what is the electric force between them?

  Three identical point chguzm lt( y;stm710d 7warges 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 w tmyugl mz1;0(7td7sis 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 6f.lab4edc*h 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 and direction of the electrostcelbah .46f*d atic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC ejr*r6bc (+isn3i,xo8 riwh2 at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitudex i2ibe +jci*( r6hsn3ow8r,r of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the - 9uo5*;aqk5agbjg s ;dg5rpwf6u7au 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 third charge of 5uu *gwo dq;6gr s5jua5 p9kb-gf7aa;-Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1o *y6gyc/ c()jwn(hms 0 m); Q3 = 5.0 nC is at/g cyj(m(s)y 6whcon * (0, 0). What is the 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 at (0, 0wxwdojrkk :5 a v(l c70se,f;3.10 m); Q3 = 5.0 nC is at (0, 0)sxoa 53v l 0;rc,wwej(:kfd7 k. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of a)fcspp 1(,ziw1vy7d +ywsuz6 n equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of p siw1yv7(c+pfzs6ydu1w) , zthe charges?

  Consider point charges of +Q and;ll.yy (2 xhxbn nv1(m +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, wouy1(bm2( yl nh ;nxlx.vld 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 dp; 4 c jet+ ei6hxzm),d1axu81sh -yna,*qbqat x = 4.0 m. Where on the x-eac 6q, eiyu,sp4tdahxq1z-)jdb*mn; 8+ 1xhaxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2zwch )oi43xyt,pi) 7ca. Where can a third positive charge +q be placed so that the force on it is zet7 3ci i)hw cop)xyz,4ro?

  A copper penny has a mass of 3.0 g. A a9zy3jq gqnwf24k8u 5 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 agaipw1fotk;8n1 n7hd / jlnst the force of gravity by the attraction of a fixed proton some distance abovenlptof wd8 ;n/ kh11j7 it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commov7+jt zk iiwq f(ypg*ba 1rd,nk., 5n,n point by nonconducting threads which are 30 cm long. Both are given identical charges, * gpi,win 7, jqt5+(v1y b,zdfrnakk.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 a ct* hr219p4d cxcnsv;at1sa 7kharge of +40e. What is the magnitude of the electric field at ssnc4t*9;acxh7 2d a1 krv1pt a distance of 1.0 m from the nucleus?

  What are the magnitude yv1w d7r6/0euo fn+u band direction of the electric field at a distance of 1.50 m fd/ 761n 0e ybovwr+ufurom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude -g+j8jn 287l8 vlgus,rntlcuof the electric field at the location of t7ns2,l 8j ggr+cljnu-8l8u vthe test charge?

  A 5.0-C charge is 10 m from a small test charge. Whatt*9d+qk q3gmk is the direction of the electric field?kdt *g+m9 qkq3

  A 5.0-C charge is 10 m from a smoe0od(xz a1 -fall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placaf- o x01d(zeoed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a diszytd.w-0-ub3- sbq qx ba)mj )tance of 4.0 m.-bu0s qy t--ab )wzqj.d)b3mx What 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 k 1rt9bnn;-nd meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c nr9dknnb1 ;t-m mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stmzgygi,kw6 8r2r3 yu8ick 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 electri, u6mz8k3gywg 28ryri c field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =-5yqwphjlp r(m* 7mzr odo)+3 0.20 m. What is the magnitude of the electric field at the point midmol )mjy*h( 3z+ w dq57rp-orpway between them?

  Three 3.0 mC charges are at the three cornebl-5hignx.* s rs of a square of side 0.50 m. The last corner is oc-s bhxlig. 5n*cupied 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 side. Charges are placed at thf6pfd-7d26yp ((zsm eh y z5jk3gfmo:e corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at ( z p(s3kdf6m -2hz(p7eo mjgd56:y fyf1, 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 ele6+i n2w*pfjsm ctric field. What is the magnitude of thisjwpfims n*62+ electric field?

  A particle with a charge of 4.ydq 7a8 qvsj /..q+mbu0 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 mass 0.120 g is p0:gpd/ha s5 u7 eqza+zlaced in an electric field of 6000 N/C pointing downward. What cha eaqgsd+zpa /5:zuh07 rge must be 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 ball 0 0awivkgh e22is placed inside a unifowheva 0i220kg rm electric 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 cha g(m txppz,whmlk kc/k449 ;o6rge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfa(wkx /h6,lp4ommc9tg 4kzp; kce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is s:dv)7*f2ghzjvp +18q rj+lvm p v-luthe electric field 6.0 cm from the -lz 1vv r2 7 js*8vhdppju):vg q+fl+mcenter of the sphere?