State the law of conservation of electricgy/ogzuo :4hg, 33ldo charge.

  Is it possible for two negative charges to attract e8; pr8o x0ezxlach other?

  Is it possible for a positive and a negative charge 98,gekeddhm / to attract each other?

  A glass rod is rubbed with a piece o/we *: e+hrrdhf silk. During the process the glass rod acquires a positive charge and theehr/d:+e *hrw silk

  A proton carries a

  The model of the atom shli:trmhyeg 5mzowe9(f++j2n7mq.p -ows a

  A neutral atom always h9fj1vpz*fa0l b iq,n +5un)oaas

  An atom has more electrons than5ywyp6g c5bvfx h2 f6tdq9 41s protons. The atom is

  Materials in which the electrons are bound very tightly to 3rtt.err5tft2uo. eg7qg;e 3the nuclei are referred.erf g 2ure;5t 3. 3eoqgtt7rt to as

  Materials in which the electrons znnu8 k 9isfgldpbl.:hb7* ,3are bound very loosely to the nuclei and can move about freely within the material are referred to b 9ni pl*h., :kgnb8ufd3 s7zlas

  A negatively charged rod is brought near c(jscnw+ kzjrs2he osrfh-h59l 4)2;one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod chkrrof; 9zh-jsn 2lh+wjsc4e5 2 s)(will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.i 2p,netmd qb u5n7,zk1i(kv : They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is coruii2b:pv enk1dm(qn, zkt57 ,rect?

  How can a negatively charged rod charge 6(p6 vyuu rk*u/mf6lcl9v4fban electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged tgcj*7fb /ir0/ayc 1lglass rof7i/rgc/ c1 *0aylbtjd. The electroscope

  An originally neutral electroscope is grounded z-r .ltit +2igbriefly while a positively charged glass rod is held near it. After the glass tli- g+z2 tri.rod is removed, the electroscope

  A positive object touches a neutral el-g -q;o;al,t. voh-dsskm +vkectroscope, and the leaves separate. Then a negative object is brought near the elg amv;kv;k- .s+-qdlhtos-o,ectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated t+v dwl(d 4) 0 yvie)3mzqx(ikrable. 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 thvii)4 dvyklmz( x0drq(+) 3ewe 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 the Coulomb con/b9bq c:7js.+ x mcsmur:6yfwqft18rstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance 3h )nyy59x7axbwia(rd. The first charge is larger in magnitude 9h3x an b a)iw(7y5yxrthan the second charge.

  Sphere A carries a net charge and sphere B is c, ixf0a,da,o neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betweeni , x,ocafda0, them?

  Two charged objects attract each other with a certain force. If the charges 9n*sf ::entm1drs t2son both objectf91 2t *t s:nsesr:dmns are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mut5ckd .u5-7hn i 9nnohxd *2zb56pozlvual attractive forces of F on each other. I6p5nhbd-h*52.xn nkcoluv oid 59z7z f the charges 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 for c9vj)6pjl;qp ce 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 is now equal topljqj) v6;9 cp

  An electron and a pr cu,k v)h gn1wq(jdc05oton are separated by a distance of 1.0 m. What happens to t ,vgwuj1c h) (ndcq5k0he 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. What happens mg *nefjh6e:8x*4 mu nto the magnitude of the force on the first electron if a secjne*: g 4u*mhexfn6m8ond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happe:g hrhjxtx/fg )z9l.8,c0aw l ns to the size of the force on the proton if the electh.wfxg, )l9:t 0jaxrgzlch/8 ron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a s695t;a:tjd yryj b6fequare. When a second point charge of -Q is placed at one of t;trb6y6y jft:jad9e5he 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 triangle. Whunqqv: :1r h n fisd*sf/*0eilh(bg9) en 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 th : rvig sn91l suqfhe(dqf0*)n/hi b*:e 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 v 4g9fmh .4i)n zekhgkuj.j+d5xhz 4w)ector?

  At twice the distance from a point charge, the strength of the e61)gn l8c3 +t dll2rci vuzg+plectric field

  Is it possible to have a zero electric field value between a negati)*,mr7t vwqaeh ,(cm* kl xxb;ve and positive charge along the line joining the two;x)kwmr h c t7,*mxb(,*qlave charges?

  Is it possible to have ab/e/ ilylef4e a(z (d)tqt2c) zero electric field value between two positive charges along the lin2tiz/)c)ybl( (ae t/ fdee ql4e joining the two charges?

  Electric field lines near psitive poif7.f e9t+ fg8.zr.tp p-nf 0jzzjztz-nt charges

  The electric field s o7+x 5wxw)n6: 9 wn:qsjczucehown

  Can electric field lines intersect in free spap2o vumwze o5g183g ma0s vh/h.1lm-gce?

  A solid block of metal in elecj9ie azti ) 5bwvqo f+2kkxeb:r204 i68 lycd-trostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in tr z0xkcl2a ov df68iee42w iqbtjk):95 by- i+he block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacq4 /+jin23 hw g2lma5d*dhtjeh given the same cewnj52g jdm h/t dl423*ah iq+harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regi+ ql jkgp frx8kv3tf;k6x8,n7on where a uniform electric field is directed straight upward. What can be said concerning the char87;+fnkqpj k 6 t3fg ,rxvklx8ge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an emh 7mo0;zk jtjqg2q)*lectric charge

  A positive point charge is enclosed izv54mdk/ ndhewcw-*1-8pjvh n a hollow metallic sphere that is grounded. As compared cd hj k*-d1whv8wnmz45 e/p-vto the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductoejsk .zr c -r4co;xk6 mp)k6t0rs in static equilibrium.

State Gauss's law.

  The charge carried b*cr,d; qgxq5rh ee+r f xmu*45y one 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 wc8jih5rr *. vmany more protons than electrons does this piei 8vwrcr5 h*j.ce of plastic have?

  What is the charge on 1 vi(h5wrv e31lkg of protons?

  An atomic nucleus has a charz lt9s/zd, /yzge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sefw9t.mx vkse-w a25 / kpb3gy+parated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f2.wy et93bx skwf5kmpga v/+-orce between them?

  A 1.0-C charge is 15 m f0msv57q4pagw -5;by h (zzt-uz msdn,rom a second charge, and the force between them is 1.0 N. What is the magnitude ofqmzvd,-75ssz (5tgy0zhmap4;bnw-u the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fafhe qb/p: upej; 73y3jwmqw4 ;r apart are they?

  The force between a o9s wfh/cwa6 ./uc/ck$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi2b+ercu.qkxt/2) t dr s e.0cdence a 1.0-N force. If they are mo .x 0/.k) ecbds2ec2d+tqtrruved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the xbu5in*cmezrvzult 5 (29 m/f3-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 markzc(/fmu2u 3rbenim5 z*t 5 v9l. 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 immm j 9dky,8.5pgzpo +s placed at the origin, -2.0 m C to the right at x = mm+ y5zo,.m k89pjp gd50 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 = 2.0ov5 ladou e **i;6f6m rf,o0nq0 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-mC 5o0vrdia*lo qunf;*, m66o fe charge?

  A point charge of +Q is placed at the cb dkri,h/+i1eenter of a square, and a second point charge of -Q is placed at the upper-left corner. It is obse+eid k1b,h/rirved 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); 3snyfha,0wi53i9b np mm -y/m Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of th0b9 mmi,y3/m3w a i-p5nnfyhs e 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 m8t *psv uq/.94eqdqm e); Q3 = 5.0 nC is at (0, 0)4m8* etqpv9use d./qq. 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 an equg6ei ;gbvm6g5ilateral triangle which measures 30 cm on ag5e 66givbg m; side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separaq;vx2t)z87bm;e+fq ryohq c4ted 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 coy+;eqt x7q24v8; m h)bz rfqthat 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 = . ;bbeh5fpk;kbkx4 k8 4.0 m. Where on the x-axis can a third chak.;p 8 be;4kxb5hkfkbrge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pl; t.vhtjzwj ()aced at x = 2a. Where can a third posizw )(;tjthv j.tive charge +q be placed so that the force on it is zero?

  A copper penny has a ma) 7xb3z -r nxjhlga)g;o,me0 uss 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 gravif ta1- htj61 8(sgcnyyty by the attraction of a fixed proton some distance above it. How far above the electron is the prot-s(61 f ytt hjg1acyn8on?

  Two 0.20-g metal spheres are hung from a common point by nonconductiv7 wh:,kfv67;diswl 5wgu t:mng threads which are 30 cm long. Both are given identical77gm uwi, s5k:;6w htvdfw:vl 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 hasy,*rvdtr,y)nc 7k g 2s a charge of +40e. What is the magnitude of the electric field at a distance of 1.07sgy2* ,k,ncytdr v )r m from the nucleus?

  What are the magnitudlxamk:. x xh fzc+5 z11s5cj+pe and direction of the electric field at a distance of 1.50 m from a 50.0-nC char5x51pajs++hkm lxzxc:.cz 1f ge?

  A 5.0-C charge is 10 m from a small test chargegs zjn/0ec 3de n:ao(7. What is the magnitude of the electric field at the location of the test char(073sja:de z cgen/no ge?

  A 5.0-C charge is 10 m from a small test chargdmvanyg l 5(t1jwmr z++x5d0/ e. What is the direction of the electric fiev5xr m/j (atm+ dyglz1 5d0w+nld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of o4n)5+uqan rlthe forna 4roq) n5u+lce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance 0.hl fx.epx5fxfh. ks kc;,o ;- fwts-of 4.0 m. What is the electric field at a point midway between t0.-xxc;lhk s-s ,. fwfefh 5p.kfxo;the two charges?

  A 5.0-mC charge is placed at (:hr szg. 3t q5 qptk-x23s)n9nahymgthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is tn t)g2s35ayth(mp39.rngqx kzh-sq : he electric field at the 30 cm mark?

  A 5.0-mC charge is plak)1-zwb b2( o:4ypuk hmwwo4qced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining qzh: y4 k 1op)k wwwu4mb-2ob(the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0hy ,4,tvpavt(h;x 4kt and x = 0.20 m. What is the magnitude of the electric field at the point midway betwhvv,x p(t k4 ;httay,4een them?

  Three 3.0 mC charges are at the thrg dh; cg.qm nvxsv w*pu*q72m746fcm ;ee corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squ7 ;ms*mcw6dvnq;. fuqhm2*vcgg4 7 pxare.

  Consider a square whickco thvv62s 3j2 :ss wvt:3a. q;vdn+x-(lgbch 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 at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's cet+wkt3vsdjq 2g;hxln-svc 6 vo:v3a:c. b (2snter?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform0bu7uk:h 1utn a(4jq m electric field. What is the magnitude of this electric field u4(q t7bhjm:1a0u kun?

  A particle with a chargk-hk d2wl0.o6q egzpx;g h*3te of 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 ix :ffq/a9 buj//qm.bj s placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to beqxfa9j. b b//m:ju/fq suspended?

  A foam ball of mass 0.1z7c -py47wweb 50 g carries a charge of -2.00 nC. The ball is placed inside a 4w -yeb7zwpc7uniform 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 charge of +2.0 mChra1 xq/-9 r0euhbuq 84gi -hy. What is the magnitude of the elect 9y1qr-hhu-/ 4hbue g80qiarxric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. pwd-v- oy0aa yph/1bmw/6fl4 What is the electric field 6.0 cm from thep1-/bpyaa /w ho0yfm4 l-v6dw center of the sphere?