State the law of conseus.4kucln93j rvation of electric charge.

  Is it possible for two negative charges to attract each oth+ yw u-vghp)f0geb-r5 er?

  Is it possible for a positive and a negative cha obr.mbx 4,9ir)c;u e3gcon hio.c3t0rge to attract each other?

  A glass rod is rubbed with a piece of silk. During the prougbwz v /1lz4-cess the glass rod acquires a positive4 -luwgzb1z/v charge and the silk

  A proton carries a

  The model of the atom s q62y.z/thg g :j8iv1/yfwbnnhows a

  A neutral atom always h hi2xc4aszdryo5r2 69 em 32xfas

  An atom has more electronsakm 2* zop)h+yurw7y j2 +6uke than protons. The atom is

  Materials in which the electrons are bound veryn;6 row crgz m674c*ow tightly to the nuclei are referredz4* o6c7rorwcgnw6; m to as

  Materials in which the elect*ik1k ru:9b 3 nu8sgcyrons are bound very loosely to the nuclei and can move about freely within the material u*cugrks31by9 n:8 ikare referred to as

  A negatively charged rod is broumlnw:qbf) )fu bjf1-7bv4k)zght near one end of an uncharged metal bar. The end of the metal bar farthest from :f4wu7q-v)n fbkzbfjlm)1) b the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neu,k -ceak9y 5g(tj .yyetral. They are placed near each other on an insulated table. Sphere B is briefly toucheye, yck5j e-yka(tg.9d with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posipck uius-si7s).cl .lqm19(y tively?

  An originally neutral electroscope is briefly touched with a positively charged +at(5z/ 9ztntwx2twif / c wqt;vu4-yp3ow;l glass txt3az4tnv9 o+cfwut w;t lzq;yiw//( p2w -5rod. The electroscope

  An originally neutral electroscope is grounded briefly wv0v: n+0nhl2p9l udrb +rjh4rhile a positively charged glashdbrjvh p:2 0n4 vn++9 0lrlrus rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral ele1700wkw qvp24cyyxf1a5m o pnctroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not tq02ma5fwnkp1v1y pc x o 7w0y4ouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutl,f c2 x79mwm6gsd +acral 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 touch7lmc sc,wdf 9x2gm6a+ 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 t+w9dz 2rh, r(*vrli hog.;ewt he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated bybzdly;k3j 8y-z : z)8 izbxz-f a distance d. The first charge is larger in magnitu lk --z)jzf zzyb3y;8 dz8b:ixde than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed bqzg fuf,b ,(;zo3+kpnear each other on an insulated table. Which statement best describes the electrostag bu+;f3fz q, zb,kp(otic force between them?

  Two charged objects attract each other with a certain force. If the cjw- 7d hi1,cjt u2uhw1o3sv,kharges on bo12cu 73hoisv1tu,k-hw j wj,dth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracth9 c9usmuvw3bj)u 8s1a tt /860qag7 levw-tdive forces of F on each other. If the charges arevm/8 awhs 8uu qgt v1 tde)7buat09l3sj6 wc-9 separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each od1. doi 83dze otwag,b6jn8q6ther with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separa1e 8qdiwg6,6z8oo3 t .nadbjdtion 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 buy:wxx :-h6eue qa5 m0c 7xz)iy a distance of 1.0 m. What happens to t)5zc 7 qua0uweei:x:m x6yx- hhe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W5fyv peb 0y6ceru rpu9j;h4 .9hat happens to the magnitude of the force on the firs ehp 9bvcjy.0e65 9ruy4; pfurt electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to smb4dnx)u1 ,x the size of the force on the proton if the electron is moved 4 u,xsdnmx1)b0.50 m closer to the proton?

  A point charge of +Q is placed at the center of az/e dtc96cd o9 +vwctsxe+b+ * 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 o*c+cbe+ /6 sdo td9x+twcvez9 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 cenbbe dme59zv,: troid 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 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 othe,d 5bz:mv9ebe r vertices?

  Which of the following itsls:o jjbd;p.p 1/r* s not a vector?

  At twice the distance from a aq koi -50o68f hqm1*1pawfgvpoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negu 4gdr1x;o* n1e.fkjdative and positive charge along the line joining the two cjxk1e ug.4o* ;f d1ndrharges?

  Is it possible to have a zero electric field value xe(/:lgxr)oz;o5nxkbetween two positive charges along the line joining theog xer:xzo(/xl5) ;kn two charges?

  Electric field lines near psitive porzd:i5 rek1*q int charges

  The electric field showrvf w+k,ll* sr)p9,m yn

  Can electric field lines intersect in fphzds* jm *g6;ree space?

  A solid block of metal in electrostatic equilibrium itnalaj 7;z,i w nr;29zs placed in a uniform electric field. Gz ,r2nzja9tla7i; ;w nive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere w1c rwix63n-oof equal diameters are each given the same charge, the elecn 3wx -wri61octric 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 unife0)p hdhn jf:oq: .h-aorm electric field is directed straight upward. What can be said concae.d0ofn h j:h)hq p:-erning the charge on the block's top surface?

  If a conductor is in electrostatic equij8 (t:a;t5z yrw- cjpoalh/9 n1ln8d hlibrium near an electric charge

  A positive point chakzj)9vbk 5s+f 2db 0yyrge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poinkfvy25 )b0z ks+jy bd9t directly above the hollow sphere has

State three properties of conductors in *e *j wse; jnyxbhy3 d0q6jvf52t ub*85gsl )vstatic equilibrium.

State Gauss's law.

  The charge carried by onyr g2nz*4l ;:i vojb;f5xx+ts e electron 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 *vp tjib7p+mqnw d032zy.jz * more protons than electrons does this piec*3+pyjjnq i 20pv tz*wz m.bd7e of plastic have?

  What is the charge on 1 kg of protonsksc hs7m(g1, c?

  An atomic nucleus has a charge of r );a+*g/xmpqk7plt xkl3wi3 $+40e$. 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 -4.0 mC:m-cyi6ezf:d -n7w f t* pd6pg, respectively. What is the magnitude of the electrid *i-:mn6 zye76ftpc- wgf:pdc force between them?

  A 1.0-C charge is 15 m from a second mg, u; do*k,.alb- gvzo4ro my(leq3d7ip ()fcharge, and the force between them is 1.0 N. What is the magnitude of -f. (*uoymdll7v,kq ,or o b( p;3amd )g4gziethe second charge?

  Two 1.0-C charges have a force between-524lah3y v b tizznu5.k+mrt them of 1.0 N. How far apart are they?

  The force between a +me 3sznq)vx;mk)in6* pf l6f$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial8c/ss e tau1e5ly 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 elec/aeutsce8s15 tric force between them?

  Three identical point charges of 2.zzkj r3kti51xc a9 h;x0v99si0 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 and direc k0az9srij;xk9ic x zt13v9h5 tion of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed) -z6 q(phu sgvwyy34i on the x-axis. A charge of +2.0 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 magnituzg6(iv qy -hs4wu) 3ypde and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at thezof3;o g.q jzfua79 y(o;xm1 bfl,fo5 following positions: 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. What is the magnitude yxufj ; 7gm.f1 fo9;z,of 53 (zbqolaoof the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, nm yfp*i-i(0 oand 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 iy- o0*pnfm(ithe lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC if - :s)rwgufs94j/zqfs at (0, 0.10 m); Q3 = 5.0 nC is at (zwqs) /j:ug-r 9sf4 ff0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0zg7w n44vs)01aohf;q+ 0 l nbeh 5hean); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is atn1qw 5eb0an7 n hl+0hfg;hsa4v4 z)eo (0, 0). 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 ahpzc d1z67c(fn equilateral triangle which measures c(hf1zpc7 6dz30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qxww+s m 3: oxl..bry8gkfn0f:, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chas38fomyf. :xxl.0 w:krwbgn+ rge 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 = lrd. wjq-h( 1v4.0 m. Where on the x-axis can a third charge be placl1-dqr.( jvh wed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at 3 4mvjd.ck( r .njgi;yx = 2a. Where can a third positive charge +q be pgd y.nk.r;j43mc ji(vlaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total8p4fv1hs foz7 dmdqm, av*f *5 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 foro9uj*6 zm vc,gce of gravity by the attraction of a fixedoju*z vgc,m 69 proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres arm8w p0hepd b2- es 2za k82:cg,;ljefne hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion f2bf8mgza:2e n2;8pe,- es jpdwkl0h corces 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 the magnitude of the electris; :lmezmd)j/7j -bl(kfft* wc field at a distance ljbffet :wlms(mz-kd*)/j7;of 1.0 m from the nucleus?

  What are the magnitude and diretffo31u re5ac7j b2.iction of the electric field at a distance of 1.50 m from a 503oif7u1.re 2b tfac 5j.0-nC charge?

  A 5.0-C charge is 10 m ff1vu-s( 3oenk(i d0narom a small test charge. What is the magnitude of the electric field at the location of the tekn 13 - o(efd(0ianvsust charge?

  A 5.0-C charge is 10bx0):v oza +6atdnp1c m from a small test charge. What is the direction of the electric fiel nbzo )datxav0:6cp1+ d?

  A 5.0-C charge is 10 m from a small test charge. What is the m/o k7z/mskn;dbyia g,*lp(0n agnitude of the force experienced by a 1.0 nC charge placed at the location ofn,klids gm7n z0k;py( / oba*/ the test charge?

  Two point charges each have a value of 3.0 C and are separated b)st p://9 a 4gnnmpjir gilxd(x m, 6m/kz//wqy a distance of 4.0 m. What is the ele sm/w/jnx6rmg,)m(iigalp np tz 9xq 4//:k d/ctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm maa tq4m,x1n8ch rk of a meter stick and a -4.0 mC charge is placed at the 8 c,h qt1na4mx50 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 me9 v. aqbm+ f7a:tqa h1hg)vee*k2x:rqter stick 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 elecveqx1rfgqq7 t* :kv:mha2ae). +a9 hbtric field zero?

  Two point charges of +3.0 mC and -se1 8kdb.o/f0k up p*5m4vq0e ogkv2s7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude0epmkp.o ss1eu 4*vv2 8gfb 0/oqkdk 5 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 i94hrze tknykr2(q0ry,8 /xv m. The last corner is occupied by a -3.0 mC cha9x vkry 2zt 4rrnqh/e08ik(,y rge. Find the electric field at the center of the square.

  Consider a square which isd92xy82nx yh c7zsjw 1ap+vk( 1.0 m on a side. Charges are placed at the corners of the square as d+x1vsjkh(n za x7y2c82 p9yw 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whzvfz6wpt7 xo+nh m7 ; bufs58:en it is placed in a uniform electric fielm+:tf7nhzs 6xu7o8v5b zfwp ; d. What is the magnitude of this electric field?

  A particle with a charge - dn9 fzaffu4:u0u1maof 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 mass 0.120 g is placed in an electric field of 6000 N/C poinu maq7 x4jx3*m- 2zblif8.9v juerb9 qting downward. What charge must be placed on the ball for it to be suspend2e8zl9f4j u3ma .qujb r *q mx9xb-vi7ed?

  A foam ball of mass +mdy )kiqns1*1x+0,m vbw mhx0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electrm1i)k*ybhx1dm qxn+ w m0sv+,ic 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 charge of +xo f- sxis3.8xlr zh)odspuxb97c9 1 .2.0 mC. What is the magnitude of the electric field 5.0 cm from the spzfl)o9 x3o srds1s.ui xc9-x8b7 x.hphere's surface?

  A metal sphere of radius 2.0 cm carries aj ljiv1 3t;6mgri.0kms ag+)z charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?g;mjki)z a1l3m isvr j t+6.g0