State the law of conservation o1 rq p qprqldnk,45 2t9g(xlsdu31 48nxm*plhf electric charge.

  Is it possible for two negativ muy syt3s;0 pc4waa-9e charges to attract each other?

  Is it possible for a positive and a negati+dxvhkoo 1(.kpn .7iove charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a,co mgdd nv8 *frkurs2,5fa;8 cqui,;8r*gkvs8fnud ao, m2cf 5d rres a positive charge and the silk

  A proton carries a

  The model of the atomh,:xr +hu 2*ofbwfi+j/di f3h shows a

  A neutral atom always0fnof/9fhvck6y: /bua/ k4uu has

  An atom has more electrons than protonsty* 5g le8.uky. The atom is

  Materials in which the electrons are bound very tightly to(3 u)5xyd df aplhtau mti)r8f/z3.pacs.t*5 the nuclei are referre u8m5 a*(c).tp)apz5h yrsxa.dd/flu 33tt ifd to as

  Materials in which the electrons are bound very loos -xo1 /(,3vv 9ahgoznbdb -lfqely to the nuclei and can movo b vnh/-g9a( x1q3l,ov-dbzf e about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged0klb,6 prb3mq 3 :w0a/ anbhzr metal bar. The end of the metal bar farthest ,nh0l/w:brma q ba3r3z0b6p kfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sp/q+v4gqysxuqfj 75l3 ,qibqaro89/ phere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thatgq8p aq7ox9sq//lqrjb,3uyv + 4i5 qf is grounded. Which statement is correct?

  How can a negatively chl drgfl9zz u,88l 8rw* ,np:lharged rod charge an electroscope positively?

  An originally neutral elec/zo a6+q;k pfdtroscope is briefly touched with a positively charged gl; + d/6opakfqzass rod. The electroscope

  An originally neutral electroscope is grounded briefly whilwxk +r5e1 :hmcy2ep+fe a positively charged glass rod is held near it. After the glass rod is repf+5ry+k: weem c1h2 xmoved, the electroscope

  A positive object touches a neutral eleczk i9eq8m.9n ktroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavese 9m9kiqk .z8n?

  A large negatively charged object is placed on an insulated -mjt0;vn62kd.vsev3zh 2 t kqtable. 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. Th;3.qdk6-she0k nvvzm v2 j t2te 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 tk4 ,lb9bcu v0aub 7d:ihe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by apof28j/ v(i-o,bk/xndxuz ygh+8,wu distance d. The first charge is larger in maghw8yo / dvjpxkizof u+ ubg-2x(, 8n/,nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near1ljxtnh3+ zbcj /*w8 kj+ek5n each other onnjkchk 3++e t5*1 8zjlnwx/bj an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chhzdw2t0 3 yno0arges on both objects are doubled with no change in separation, the for3n yw20htdoz0ce between them

  Two charges are separated bzwggy- 9.i1r;tpb fx4 y a distance d and exert mutual attractive forces of F on each other. If the chat.rw 1zgyg- if9bpx4;rges are separated 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 the) xy e nd lfzn,02f)d2ah7n /,ehh7whn 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 original value? The force hwfya) ,,fe277n /hn2hhd ndnxlz0 e) is now equal to

  An electron and a proton are separated by a distance of 1.0 izj/ rws(,fuyp34 iah)wb6n8wu ))m mm. What happens to the magnitude of the force on the proton if a second electron is placed next to ahi,ww8)ufwm4 u zijbmr(6sny3 ))/p the first electron?

  An electron and a proton are separated by a distance d,(p6*o wd*g+ 0s.iunuydde yof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plac0i+6g*. udw*ey udpd sdn (o,yed next to the proton?

  An electron and a proton are separated by a cgbr84;+*9zthhb5 xei qvi. ndistance of 1.0 m. What happens to the size of thrgb+;5.ii4zv 9nb8e chtx*qhe force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When z a ee(vauj/:1a second point charge of -Q is plv:z1u e je(a/aaced 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 square?

  A point charge of +Q is placed at the centroid of an equilateral t0fnjf0gl8( r .fx h,cfmn5a:wriangle. When a second charge of +Q is placed at one of the triangle's vertifm:a ,nn 8(fx f f5.hjrgwc00lces, 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 followin -fcoyzin/kmm(5c7,g1f q x 4qg is not a vector?

  At twice the distance from a point charge, the strength of the electric fie athzy6.546ht 7vg ixzld

  Is it possible to have 8j g efuffjqyby+.j-; -5 xs3ma zero electric field value between a negative and positive charge along te +sm;- .fq5bg -fx jyjufjy83he line joining the two charges?

  Is it possible to have a zero electric field value between two posit+ umnsw;a ((c,nr91;1lcgg+e aii fvr vvy d16ive charges along the line joining the two charges?ni16,vu d;yenw91gmvir1sa rl v; ac cg((+ +f

  Electric field lines near psitive plscd fjslxc5/.fb) 0x; ns,o3;8ek ff oint charges

  The electric field shown o3fuza* -wctwx zyar;yz*)tm+ j 81,e

  Can electric field lines -xz8-ffngdz.c;ya q3 c pc d/8intersect in free space?

  A solid block of metal in elect. mz/k/i-.8;bl 9bynv /atox ijxg)plrostatic equilibrium is placed in a uniform electric field. G x/y zbi.i/lko-8 /bjt9.l vg;mn )apxive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are e( *,n.j1(kmm.wupo0iyxnf3r t8kw(6 vi upl c ach given the same charge, the electric field (E) midway be*puy,( ..f m3k(1kwonm6l i8x i0jruwnt(pc vtween the center and the surface is

  A cubic block of aluminum rests on a wooden table inur d *l1/jmxm+ a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's1mmu/ xdr+l*j top surface?

  If a conductor is in electrostatic equilibrium near an electric -hmsorvu3( l9:u v9l9 d,zsw8mt9wcr charge

  A positive point charge is enclosed f **c-8sx a0(k psuc*v9arkkgin a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fia 9ccp-fs (8k r*ksxau0*gvk *eld at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium,3xqym0nwp)s0 - ba ohki*ws ).

State Gauss's law.

  The charge carried by one elec5w mqe; anow9)tron 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 q/*ykg* 6a6 ev7s0w4cij qzfuvf 7n9 la net charge of +2.00 mC. How many more protons than electrons does this piece of pcu* 4yjvfgzni/6eq0w vq9k7*sa 7 l6 flastic have?

  What is the charge on 1 kg of protonsvg4f+4fw1cc u*f sm+a?

  An atomic nucleus has a charge qwvn 7sn*-,arof $+40e$. 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 jbmi1 (misdugb4 61 gsq 0u1u5-4.0 mC, respectively. What is the magnitude of the electric fori1b0 gb1sq(4ugud mis6u 5jm1 ce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0d ab/efn+n ea)5zf/ n+ N. What is the ma)+ nen/ab fzf a5de+/ngnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0lqteaxm--+ukvc k.( - N. How far apart are they?

  The force between a 3r6 *rllo/rzh$30 \; mC$ 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. Iip -7722eetpzdceq d3o pg*x4d wkv/6 f they are moved to a new separation of 8.0 cm, what is the electric force betweenegdt7ieo4 -wxd6vk*pqd32 p c7pe2/z them?

  Three identical point charges of 2.0 mC are placed on thek .a d0j4 +dicumrs 5mn*t-(uc x-axis. The first charge is at the origin, the second to the right at xn-djd05cu (*aum +.4itms crk = 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 charg;s utmosa 3 1qw+ewyjl:e);v; f;la0he of +2.0 mC is placed at the origin, -2.0 m C to the righj w feah+mwvos;1l e)q;ts; 0auy ;l:3t 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 = 2.00 mC at ,):j e3m5t;fyhg(1k51uy)rll r s gdzwg.by p x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. W:)pmrygle.f 3y;hglrj 1(bsk55d,wu1) z tyg hat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is v iw3:5 c9u)yk6jrqtof lmu :x8u4c9 6ojwv4e placed at the center of a square, and a second point charg6uyo e5jt 8rvxlw394f : i ko6 wq94mvucc:)uje 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); 6qk+ h3crjpwug(g1(lQ3 = 5.0 nC is at (0, 0). What is the magnitjgh(cl w k r(31+q6pugude 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, 0.10 m); Q3 = 5.0r(ck15qd 2 rlu(wr 8uf8 hir(1zzbwm: nC is at (0, 0). What is the direction of the(8zfd1r r8q(21cuu lz5ikmbh: w (r rw net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCr) jn ne5mqw6n+ 9j+ 3c2f.pb4qlibhc are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of )i nb2h34pr+w6jqejm59+. ncfl bq ncthe charges?

  Consider point charges of +Q and +4Q, which,yjdf5fy aqlxee. /t6p s,g-evnp2l4t1- 8p d are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting ofl/dj1e edp,an2e y .pq64-5l s vx fy-t,p8tgn it would be zero?

  A +3.0-C charge is at the;x-ai1ro:dt c origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the:i ;o 1crxatd- net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x k4+n; ecdxa: zx v4,fk= 2a. Where can a third positive charge +q be placed so thatv zk;k:an4xcf4dx,e+ the force on it is zero?

  A copper penny has a mass of 3.0 g. dmc1bmi ;75pd 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 m +a5wmz5n-j dax ( +yv8wn,fsby the attraction of a fixed proton some distance above it. How far above the electron is an+d8a5 +xyjn5mswfz,(v- mwthe proton?

  Two 0.20-g metal spheres are hung from a common point by noncondugi8j mcdn)xo- vwa) /:cting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion )wxa n)ij8dgmv:oc / -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 d;3l*girfpgkwfkwm b18 8 q:qh( ,7skis the magnitude of the electric field at a distance of 1.0 m from the nuclffgs8;q83kmkqb1dhg(,p * w7: k wrlieus?

  What are the magnitude and direction of the electric field at a distanc5i; sn+ 6gyy2/ntiyjjd*vd1i yg5uc*e of 1.50 m from a 50.0-n5y5sdiji yuc12ygt*d;+6g iy vnj n /*C charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thmt ta5)l 5nxb) o*c4jxlv 1.f mxi9:ife electric field at the location of lvt:55 mnaxo.i9b4f jftm li)xc) *1x the test charge?

  A 5.0-C charge is 10 m from a small test wy lb k50yv2/* xdg77z6uwsxgcharge. What is the direction of the ely7y7wd6gxvzs k5lgxbw / *02 uectric field?

  A 5.0-C charge is 10 m from a small test charge. What is fjc06k/o d+k ei-,yij the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chae jic+o/ 0 iyd6jk-k,frge?

  Two point charges each h : isrps6e ptvz5l.;*wave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betw5 wrtzlss6 p:* p.vie;een the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meterg hhgabk i b5,:4rhpi8ce2 4/l stick and a -4.0 mC charge is placed at the 50 cmh 4gahib /r:b2i 5,h4kgec 8lp 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 meter stick and a -4.0 mC charv.jo)x/y- :jhhaw: q yge is placed at the 50 cm ).y :q-jwx:yvh ja /homark. At what 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. o6 2rdfqw6ct7 What is the magnitude of the electric field a6w 2o76rdc fqtt the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side uym 6 4kd5wihlo .n31f0.50 m. The last corner is occupied by a14nm i5.6okhl yd3wuf -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 a ;. ggg+lok3mr1y6c djt 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 (0g k;3+j1drg mo 6gcly., 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 i,4woo kgvc 1/ nub+w*n16izhwhen it is placed in a uniform electric field. What is the magnitude of this electric field?ginowv,/uno*i+c6 b4h1 zwk 1

  A particle with a charge of 4.0 mC has a mass obxv ( wbk;i93 wfst3u.f $5.0 \times 10^{-3} \; kg$. 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 602ttjllb9nms)13c5i b2 3 w4ctt v y,oc00 N/C pointing downward. What charge must be placed on the balnm21v b5i wo4 lt)tc2ccj39t3l,ystbl for it to be suspended?

  A foam ball of mass 0.150 g cat6a) qks1 /zwhrries a charge of -2.00 nC. The ball is placed inside a uniform electric f/a1kq6h tsz w)ield, 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 +2.r( ebz edk35x(0 mC. What is the magnitude of the electric field 5.0 cm from the spherzek(x(3br ed 5e's surface?

  A metal sphere of radius 2.0 cm carries a charge ofsxg* 2lf4h 4dnw ,m8lu f,hw4d 3.0 mC. What is the electric field 6.0 cm from hxn4d24hdw g wl,l* 8,fsfm4u the center of the sphere?