State the law of conserd.-);a wess -vcmrmi;vation of electric charge.

  Is it possible for two negative charges to attract each+4e( xx,5 hg (:imlwjowgv;et a4baxelg7o4 4 other?

  Is it possible for a positive and a n18z v+ hzsanwx6 ;r9zlegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ur/t yd p7:du+acquires a positive charge and thetuyd ud7r:p/+ silk

  A proton carries a

  The model of the atom shows uqx4w)k66:1s bgzh tc a

  A neutral atom alway;uhl9v k(o f1as has

  An atom has more electrons than protons. k7ynsb +t c; :h*y7uzobp/i6m The atom is

  Materials in which the electrons are bound very tighto(c/saoyr+c5l .bm +zly to the nuclei are referred to asams/+rcy+bo5 lzo ( c.

  Materials in which the electrons are bound very ll14c9x hw:b;,(zgsvi kwc m+loosely to the nuclei and can move about freely withc9 himvb, :; w(scwzx41gkll +in the material are referred to as

  A negatively charged rod is brought near one end of an unc etw 8d 8-+n(yogcpx6eharged metal bar. The end of the metal-wnc8oe+8dxp gey(6 t bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphevs ,u. bq4qiwfu)+7s e;iwah :re B is neutral. They are placed near each other on an insulated tablasw. uf 4qi:siq+bw)ev,h7u ;e. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopnsqdzuu 2:8y3 r z6io;e positively?

  An originally neutral electroscopelxc +dzo9mc+594 hph,dg (zte is briefly touched with a positively charged glass rod. Tzg dx+t5 lop+dzc,hmec (994hhe electroscope

  An originally neutral electro 5(po/qx1(x, aq *uhlgd7m bojscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod 1xx,5 qa(g j(qou/ pbom *h7dlis removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separrmyr tg,;8( ezate. Then a negative object is brought near the electroscope, but does not touchr8;m,yre(g zt it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. 2g+:;lmv(kx aqmfyw* 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 neg;:f(*m2yq mg lx+ kvwaative object. What is the final charge on each ball?

  Charge is

  What are the units of o n0a)efg .sf- jw.gc,um+0cu5c to1dthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by 0jj:a uk3n uk5a distance d. The first charge is larger in magnitude than the second 03:5ujjkn akucharge.

  Sphere A carries a net charge and sphere B is neutral. They u; h)l1uo/t kbare placed near each other on an insulated table. Which statement best describes the electrostatic fhbuk )1/ou l;torce between them?

  Two charged objects attrauvd)biuz:(1i ct each other with a certain force. If the charges on both objectzi(bui 1u) d:vs are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracti iuwu6-9c 4jh2ue(yq kve forces of F on each other. Ifj huieu624-k(w9cuyq the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wier0gi2x wqu80 lpt6-q(bc)d c0bik l9)q uiv3 th 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 ce qibv kd906)cg(p8elq2qr l00iu)- t x 3wciubnters 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 1kro2) x t3skqaw4majhw q8 +6/.0 m. What happens to the magnitude of the force on the proton if a second e6 jo+ qhw3t/q4ka kx s8)2wrmalectron is placed next to the first electron?

  An electron and a proton are separated by a distance of rxgwyjyw:-:r 2kud )(1.0 m. What happens to the magnitude of the force on the first electron if a second electron is p)w xd: y2jgkr- :rwyu(laced next to the proton?

  An electron and a proton are separan o6c )*bjt4hmted by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is tb6n m *cjoh4)moved 0.50 m closer to the proton?

  A point charge of +Q qqw7-uw8b5 58wd 8hnfncsl/ m is 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 others- 8dq qch/lm n8uwn5w8wbf57 three corners of 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 2y qieeu*g;yq s;b:f/at the centroid of an equilateral triangle. When a second chgqy2i;;be q/uye *sf :arge 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 vertices?

  Which of the following is not a 7a*49f qabdu xvector?

  At twice the distance frox,b61 qpd2yuom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative a9:1ghjhr o)ak,f2 jllnd positive charge along the line joiningljha1g,jk2: hr) l 9of the two charges?

  Is it possible to have a zero electric field value between two positivejiy 9eucl:q/4 charges along the line joining the cu9l i eqy/4:jtwo charges?

  Electric field lines near psitive point chargey6 05ddzk *yxtt va7-ds

  The electric field shonj 63l1oh abgglmgl,a -k8 g,,wn

  Can electric field l8k8 phfy pj-m5d -bh(kines intersect in free space?

  A solid block of metal in electrostatic equilibriumrbp (hd5j t-gke5 a0c(799phhfpee9l is placed in a uniform electric field. Give a statement conce 5bh(rch9ep5k0lajd9ep -et(7pg9 fhrning the electric field in the block's interior.

  If a solid metal sphere an k 0axq)dwraj0j5v;3ri 5wv(gd a hollow metal sphere of equal diameters are each given t;3 )rgi0 (xrqwd550avjjvw akhe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unfxrz) dtu, yd/107fkl iform ele7d lt10 d)y/,urfxfzkctric 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 vcwi3(ue skll k+6 8x:electric charge

  A positive point charge is encloge 076i q4j3hj cyz+jysed in a hollow metallic sphere that is grounded. As compared to the case without thge jjqj6h30 yi7+z yc4e hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static e7l;t-epjt)*3vp ixtlquilibrium.

State Gauss's law.

  The charge carried by one electron isifq 2wf u74h 0/bowa( lz6xr3w)ye2had.k 8wr $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net c *fm+4eb0vbj4))aaesj5ujdcmtaxdp 8 /f o84 harge of +2.00 mC. How many more protons than electrons does this piece of plas) 4up4djs*a8e5txe)/d b0vj48 bfc+m jofamatic have?

  What is the charge on 1 k /v,ezr9,do+ utzlcp-g of protons?

  An atomic nucleus has a charge of b-och4bqf ,w9bdd3/e$+40e$. 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 al;f)liba3dmr+ ,oa-2whsn ).0 mC, respectively. What is the magnitude of the electrhosa d)f lrm-; ,)+aw ia23nlbic force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 N70cyo: /a, d-tn gcm 5u,89emmoef ede. What is the magnitude of the second charge?/c-7dd8 tmeee: o,no , c5my9a0fumge

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thl6hvq 38g8dehey?

  The force between a tm g5-3qssnfl:qc36s $30 \; mC$ 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- onogtjccml./*p4w (fd8pfq:0b i) b( N force. If they are moved to a new separation of 8.0 cm, whacio(:0(8 f. 4f dqpjc tb /pl*on)bmgwt is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fiu- f 3.0goja(4 uqzejdrst charge is at ta .4(gfj o0d3uqu -ezjhe 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 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 at 7a7mv;vm ym8 gthe 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 act 8ymavv7;mgm7s on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 kc2cv nk ;: :efrua,5amC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What 2 k;er:vfuaan,5ck: c is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is u 2f gmv, tjj: mg-p+g0xo*e*mplaced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic xgem f+2gp,*mu*vg -o:jm0 j tforce 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); ihhqp5ec6w.7+ whs3t wrv*g5 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is ath7.t35ww ve65c i swp+hg*rqh (0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0./td 6ir.tandn/;ke w 730 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 oei7ttd6n/;wr /a ndk. n the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the klxiunat(x x ) c+-sx1vg o/5-vertices of an equilateral triangle which measures 30 cm on a side. 5-sv xucxo)ax1( n-i+l /xgt kWhat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bi8nwj12g 1 x7 nlwfa7py 3.0 m. At what point, on a line between the two charges, wou2waxi 1n pw8l n7g71fjld 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. Where on8))cs pdpb; (lbrnerote9b 2 96qafn 8 tod 8annb9p)9f b 2e(pqb)6 trclr;8 sehe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge r0k) zm,g 8fx2h2r1 ybcp: pkt-q is placed at x = 2a. Where can a third positive charge +q be placed so thkp2, zxp0fy8k)1:b2rm t hgcrat the force on it is zero?

  A copper penny has a mass of 3.0 g. z)wiq pu2ay ,vd:k*+o:i8 ot2 vmrcr4 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 okh/08 :1gbz s3m- ep zlotn:aif a fixed proton some distance above it. How far above t :og zz:-kbetislp8nm/ 1h3a0he electron is the proton?

  Two 0.20-g metal spheres are hung from a common po/ mglsgswvjqv*26wcpd o,706int by nonconducting threads which are 30 cm s ,2v0lg/cj*gv 7m6qwods 6pwlong. Both are given 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 charge of +40e. What is :lp , +wh3bd(;knmt0dvlp k+tthe magnitude of the electric fieldlwbkv pt (nhk3+:m+dd 0; pt,l at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fh5l + lgp,uc(pield at a distance of 1.50 m from a 50c5 +hlg, (pulp.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wh9,xin6i(g f 2tuo c,prat is the magnitude of the electric field at the location of the test char 2,xco6n( pf i,ig9truge?

  A 5.0-C charge is 10 m from e7rr lf :r )57duejpvh*tu28e a small test charge. What is the direction of the electric ee8 pu f:dr5 2tjelhr*v)r7 u7field?

  A 5.0-C charge is 10 m from qtlxm p 7jk463a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargexq6 t7 4kljp3m?

  Two point charges each have a value of 3.0 C and are separated by a distance of 4r/z h -3huczz4.0 m. What is the electric -/hcz3 4zhz urfield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark olhxzs/h 9zd tu;a80 8qf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thelh/8x9q;s08 tauzz hd 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ofz9h1 8wyh) yxasy5e1u 4dss2i a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point o)4xzy 1hyys2iw5 ues98s1d ha n a line joining the two charges is the electric field zero?

  Two point charges of1,0yo xrez z+lt2yoxw.t gi 98 +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field0yi1 tx 8r,yotxze9+.wz 2gl o at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sw3nk3s xwsg2v/ 79y vn)p nx/zxg* c5aquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cente/ 9 v7kn w xnx*52g)pwx3ysc/svnzag3 r of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thk -(o:ua2s 89p0 e( uhukbzigfe corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); u0a8:o(bi-(9h2k s p uezufgk -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 uz; cy01 w3ohy5i- mrmjniform electric field. What is the magnitude of this electric fieymcr 1 ij0wzyo35m-h ;ld?

  A particle with a charge of 4i2v-71wue2(zkk b )f2 q qeihomj(k, )asyr7s.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 mass 0.120 g is placed q2w1ser8 dqa: tcu*bs 4.rhu4in an electric field of 6000 N/C pointing downward. What chargesqr42awt srdquc: h.*b41 ue8 must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a / +ac5jsgugx2 charge of -2.00 nC. The ball is placed inside a uniform electric cg+jux25sg a /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 ca )7 rdv5nyn ev gr5nma4c5r8)zrries a charge of +2.0 mC. What is the magnitude of the electric fi ncyrm)dnv)n748 r5a vg z5e5reld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whaty r(w4ahxstun(-y; sus ,i;(x is the electric field 6.0 cm from the center of the spherwxhsss( ;iu4(- t;nuyry,a x(e?