State the law of conservat+//pmn19fftq0 w9n irbg i;h, gf7 .pvcgz(vrion of electric charge.

  Is it possible for two negative charges to attract each 5.d8 jcizt-2ac ad za+other?

  Is it possible for a positive and a negative cew m8mv-8slu( yeg64 k,0glk kharge to attract each other?

  A glass rod is rubbed 9x7 w8(a ps) 1 pa6ncxz6j0ibmyup3ss with a piece of silk. During the process the glass rod acquires a positive charge a ix(31up p689) amn0 cjssb6szp7 xwaynd the silk

  A proton carries a

  The model of the atom shows ed) ai b )pyoo3.7psmii5 cv1v-ii: i+a

  A neutral atom alwaysk xr73wf anekq p/982r has

  An atom has more electrons thzb1 pf 3lyt2,tan protons. The atom is

  Materials in which the electrons are bound very tightly to the nucff44escalt 668)/ p7 upnrbnxlei are referred to r4eu76/pbs)fn ftcpx86n 4al as

  Materials in which the electrons88jmonb1f,9dxiy hi4 are bound very loosely to the nuclei and can move about freely within the oh81bin,f8m j yxd i49material are referred to as

  A negatively charged rod is brought ne en)v,y+yrq 6g6+nyevar one end of an uncharged metal bar. The end of the v+re) 6+qen6y,gyynv metal bar farthest from the charged rod will be charged

  Sphere A carries a net poiz7 r209xy 9ti1pyn cdsitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B ii72nipct09 y1drx9 yz s briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positb3 s(2pw9 ,suysfw 7cq.-guo jively?

  An originally neutral electriku5 d 3f6xi:r.cc4 4vde ha-xoscope is briefly touched with a positively charged glass de x:6 a4uhi-5c3vkxf4 d.icrrod. The electroscope

  An originally neutral electrot+n ja6,at p6rhkd:: bscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the el6rntka,aj tdh+:b:6p ectroscope

  A positive object touches a n)fh.w -lrl .sseutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to.lhw. f)r s-sl the leaves?

  A large negatively chav)cv ;o2 :gkvprged object is 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;pvocvkv:g)2 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 the6nsvwalih: c(v3b). a Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first 0bp9 nqrf t68d e a4v5wjafbz,1l;8pdcharge is larger in magnitude than the jr 4b v 5 ;n8d86lpef,pzwa d90a1tqbfsecond charge.

  Sphere A carries a net charge and sphere B is neu5l(1 h,kb 3f3ip2zwyfnn 3lhjtral. They are placed near each other on an insulated table. Which statement best describes the electroslwk b3 3fp3y n(iz hl,njh21f5tatic force between them?

  Two charged objects attract each other with a certain force. If the charges oav,py;+ j8/dxy+s*nwtjh d k.n both objects are doubled with no change in separation, sdtd8k/+;aj+.yw*x pnvjh , ythe force between them

  Two charges are separated by a distance d and exert mutual a+8l 5lv46 rrcepb x9gdttractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual force84rl95xg+ld pc r e6vbs?

  Two charged objects attract each other with a force F. What happens9lzh4yc 81 * ,nxqqzms v*yhh- to the force between them if one charge is doubled, the other charge is tripled, and the separ l4zqnxs* 1 vhh-yz8qmy,9c *hation 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:rox(wz,g: gcbur v7* distance of 1.0 m. What happens to the magnitude of the force on the pro:(r ug r*gcv7w,z:obx ton if a second electron is placed next to the first electron?

  An electron and a proton are separateh2x9 v6;e:xv1x a jhbtd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton?hjv2 a9;1b :xv x6tehx

  An electron and a proton are separated by a distance of 1.0 m. What happenyk4mpo7id;h 0 s to the size of the force on the proton if the electron is moved 0.50 m clos; m704oipdyk her to the proton?

  A point charge of +Q is placed at the center n nxf 6t-.1m4dni *trxof 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. W f-ni *.d6ttnmx x1n4rhat 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 centroijh5qc izbm4; z*l (gw*d of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on ij;wm(c i**5 qlhz4bzg t. 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 not a vect vm 5ca4xee;3 4nenu2bor?

  At twice the distance from a point charge, the streng.s/m.b5v l -ig)bul cigue)o:th of the electric field

  Is it possible to have a zero electric field va2onj- ) p mli2;v/p4 k xo3+2ddarv-dmxa5nfmlue between a negative and positive charge along the line joining the two charged-;p2 lmiv-4 jmvaxfoxd 2r +p/a2nmkd5n3)os?

  Is it possible to have a zero electric field value between two positive chaw o1vz, 29cqrhsy ir25rges along the line joining the two 2ir1qs 5oy 9z,c2whrvcharges?

  Electric field lines near psitf.xp u44;t vuyive point charges

  The electric field shown td iah(c1z09 fo *c*qn

  Can electric field lines intersectp,o g1p hewcx 6e8+*kr *ywma. in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unsf8fq hsrv i0h08tui 71 e/y7ciform electric field. Give a statement concerning the electric field in th0q y7 rit/780c1sff8isu hv ehe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dbwd m81,wo+od8sv-br4f5ei miameters are each given the same charge, the electric field (E) midway8fi8wbmd4+re5 b1-ovosm dw , between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformu: can2m l/6 w3guifp- electric field is directed straight upwar/guwalc:ifn 6p-m 3 u2d. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eh44 z/xh mgk2-b3drl jquilibrium near an electric charge

  A positive point charge is encll-*ol2l cqj e;osed 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 sphere ;o-e* jl2lqclhas

State three properties of cond oomt bryf58 -sg0v.rh*c+zvk+ qcm3)uctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is k6m:ib(bo o9 b. jb,3si;*mhyf x)xsy $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge o+ kxxs 769ktyxqz3t- bf +2.00 mC. How many more protons than electrons does this piece of plazbt kkxq- s6 xt93xy7+stic have?

  What is the charge on 1 kg of e)lh k+u5aj9y protons?

  An atomic nucleus has a charge lvhvu:ew imoz +0)x55 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separlak9k6n8mbju1n , i.)oent y ,ated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the el)o ,jk lk,.nneubi8nm16ya9 tectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fr 9/pgk5 yozn1orce between them is 1.0 N. What is the magnitude of5/19ky op nrgz the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fh j/r;v/*n oifar apart are they?

  The force between a nyc6bu5:(xnfx t/fwoq q7bve ;.. s-b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiay2g0w(ncj/ 0q mrnzao )z.gk+ lly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between themg nr znza/o)qjc.2m0wk+0( yg?

  Three identical point charges of 2.0 mC are placed4xd1f.ct 7gp8 xb xewam(t8+ o 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 ma(7 o8f . g 8dcxttewp1m4axb+xgnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis1ws:ztdj4o c*. A charge of +2.0 mC is placed at thec*dzjwt 4:os1 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 electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.g9mt24-s 2k:y th (v4d.ap3nl pokllg00 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 force on the 3.00-mC2tl gth:o- (k4m3 2pl9k.lynp vg dsa4 charge?

  A point charge of +Q is placed at the centoi4som1c n*xwjpa22uw+135kmvt v , a er 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 -Q is placed at the lowpwm svka+at5v *o1i1wum 2,cx32jn4o er-left corner?

  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 at oghncq,d ,c- cqr5z0. (0, 0). What is the magnitude oqnzdh r-ccq.0c o5,g, f the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 bwh nt) j)nf8 5-t:l,ux xng)tm, 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 5h8unttbjgt) ,n-:wnx) lxf ) force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertic1qol ful7b4. h8o 8h6lcvbi*/-itrtu es of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts ob 81ioo h lb8 4/.lih6v-uu7fl*rctq tn any one of the charges?

  Consider point charges of +Q and +4Q, which are separa53 ahcqw end-t-wnt 50ted by 3.0 m. At what point, on a line betwencdtw a3hqt5 -0 n5-ween the 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 m. Wmhl v8/7wol h,here on the x-axis7lh/ v owh8ml, 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 = 2zcy25h- awu4kqv 6y:qa. Where can a third posc vahzuqkw-yq6 5: 4y2itive charge +q be placed so that the force on it is zero?

  A copper penny has am*k- 9dfnhs9sk0- bo .ma(jo d 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 attraction2tq( fqx;ruf9edo+ 1cz,;qws of a fixed puzq t,;fwce1 9r(oq f2;d+qx sroton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a ch. i9+w1vryx18g)ptexg p7r wommon point by nonconducting threads which are 30 cm long. Both are g.x1i9pper y7r1x +vghg)w8wtiven identical charges, 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( mqutajzz 0qq9o in0g94xjp 8q9p0 +w charge of +40e. What is the magnitude of the electric field at a distance ofj08(4 igqt z0z 0pxqa9wunm9q+9o qpj 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance o(rdr0z en ,xd1ow b3t;f 1.50 m from a 50.0- x nr1 edbzdt,(0w;3ornC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thew2awa t -b: 85jx;sll.c;yzh)hmsmz- electric field at the local.-;twsazx)2 w -:yca b;mm sz5h8ljhtion of the test charge?

  A 5.0-C charge is 10 m from ap3bikg9hj.h22noz/6 q ug)cs small test charge. What is the direction of the egns2u.og h zph)/b3j62ik 9qclectric field?

  A 5.0-C charge is 10 m from a svuk i ;whq w 00 4dxze1cns:.v6j(a(ytmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at thjnw0qt; v1(iv zc6d0yekahw4 u.s :x(e location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance n+ hsd5+ttwr)of 4.0 m. What is the electric field at a point midh+ 5r)t+ts nwdway between the two charges?

  A 5.0-mC charge is placed at tk8h/+c9r;) ur *gicnuhs4l-sxl-s ny he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. -x+hni *u k s8gcn9 y lu)4c-sr;hs/lrWhat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm.t+ k z;hxf d ;pkr48g8)rmlmz mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jo +rfzgkm8mxz)hr;.kd; 8t p4 lining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x9h eu)7rqp xhf9dv,n9 st*q2p = 0 and x = 0.20 m. What is the magnitude of 2 eu*, vx fn7ht qd9s99hqpr)pthe electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners ofulw-vqblf 2-tl7 8y 2m a square of side 0.50 m. The last corner is occupi 8bv2 qlft7--u yl2wmled by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whicadizps77u;6x f:cc,a h is 1.0 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 6z: di;c ps,xfa77auC 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 -69zxr:- *l*medxe;ic a dscdcharge of 5.0 mC when it is placed in a uniform electric fieldl*dc6ic-d* exsd x-9me r;:az. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of+5oyyw/chh 3 lflp8+ 3 8q7rrzwh(bqv $5.0 \times 10^{-3} \; kg$. 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 du9+7)fap4 ajxg 9zd ,zc7wba/C pointing downward. What charge must be placed on the ball for it to w za ad)+ afgjc9zbu79xp4,7dbe suspended?

  A foam ball of mass 0.150 g carries a charge oh 0c,fcxd 2*bgf -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against *cgdhx,f 2 bc0the force of gravity. What 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 4hq ;jc,g*c e57q)ip5 lnqglv the magnitudn4pgcje7 lc5l g,; i*q qhq)v5e of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge ofos: r/5 jwjs-c 3.0 mC. What is the electric field 6.0 cm from the c5rw:c/j sjo-senter of the sphere?