State the law of conservation of t/41g1/zfhcl ,a0 somgmfd 2k)(ycidelectric charge.

  Is it possible for two neg +9;qtbtuxmdyq * r-w)ative charges to attract each other?

  Is it possible for a positive and a negative charg-qy;b .tnct+sq82xo wgn g;5oe to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a-4 t4l 0+hei-nhu ve)yujxeqcr:(a8mcquires a positiv):urqyvih4-0te c(l-xm a u hj+ee48ne charge and the silk

  A proton carries a

  The model of the atom shows am; 5ligc7nz,n

  A neutral atom alwaysf8 4yws+hib7 d has

  An atom has more electrons than protons. v6(;oh /jf2kfv f)hmf2rd0cm , pe (xnThe atom is

  Materials in which the electrons are bound very tightly to the nucl5hf *q xla /apqrtfi7 *i; rq7-84jktwei are referred rf /fkqaxat*7r-7i t qq*5 iljw;h 84pto as

  Materials in which the electrons are bound very loosely to thm.ft ..j mn gw;*gof*be nuclei and can move about freely within the material are referred tf jmob.t nmwf;*.*g g.o as

  A negatively charged rod is brought near one end of an uncharged metalaf65(bl rn96daq2o alm qag ,, bar. The end of the metal bar farthest from the charged ro l6q(arbgad,6 fn la5q,2o9ma d will be charged

  Sphere A carries a net positive ch. lm pslgnqg/ja-*8r4arge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wi*pma/-g4qn 8 rgj.llsth a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopem94 u)jy 0u;bpi8 jm/e,hbn fy positively?

  An originally neutral electroscope is briefly touched with a positively chargedlccx *dot f/i q;w9xo(dh)*) g glass rod. The electroscop)ch*9qd f /;lg*i cxtoxw) (ode

  An originally neutral electroscope is grounded briefly whil-fhjy3em.ohv 8t; nj 0e a positively charged gla-0jn jt3 ;fo.hvh yme8ss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sm 3qudzund 3)5 r47u6kn3uqeeeparate. Then a negative object is brought near the electroscope, buu543dzde nmq7 )quu36kr 3enut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on qj6gu+rn1 / e+)av w6xfocf 4yhw)j;fan insulated table. 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 negative object. What is the;61)ou nh6/yr ce+w)xf fv+4fgqwjaj final charge on each ball?

  Charge is

  What are the units of theqwgn2-v avo: 8 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a e.v:c (d5dao z/rq ,o9tnuylu2 y5ibij/*v; xdistance d. The first charge is larger in /xrjtce( d uu5 i ,no*9by./va: qil;o2y v5zdmagnitude than the second charge.

  Sphere A carries a net ch4b7a 9;xo uu 5zwian8warge and sphere B is neutral. They are placed near each other on an insulated tab5wbuw;ao8 zu9anx 4 i7le. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. I ;d7-y h(*3x9qtr yzillkcv*t f the charges on both objyil;dh *z-yr ktvxq*9l7t3(c ects are doubled with no change in separation, the force between them

  Two charges are separated by a distanc53v; qhi8w n/l b(qkgte d and exert mutual attractive forces of F onwbnt ;5qqi/l v83(hkg each other. If 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.cyvp6jlj9r39 What happens to the force between them if one chargy9l3rvpjjc9 6 e 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 to

  An electron and a proton are separated by a dista88; *2bo 6qx/7a4paiqulq -dlf yyyx pnce of 1.0 m. What happens to the magnitude of the forc2 ;4d y6a8y8af-qopyx/up * 7lqx iqlbe 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 hhws;ttlkk :mp *oitg46 4t-;oth a5 g*appens to the magnitude of the force on the first electron if a second electron is plt**hg gktkwst 6m:4t4hoo; 5api-t; l aced next to the proton?

  An electron and a proton are separated by a distance of 1.0 wyii7swbl1a 7 6r64lpm. What happens to the size of the force on the proton if the electron is mplwwlis 47ry176 ia6 boved 0.50 m closer to the proton?

  A point charge of +Q is placed at isp q5i v;nt gop(8-) 5mp/tsnthe 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 other three corners of the squag p5sni)ts/p m(-8t n;p oqv5ire. 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 centroi;to +tao*;vs md 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 other verto v;+;o*stt amices?

  Which of the following is not a vecto1 vu2i z15)j3/qz6x fuosscf;wo w2 blr?

  At twice the distance from a point charge, i;y/b *ja4 zcoi:g+fethe strength of the electric field

  Is it possible to have a zero electric fipzlz* of6w6 5lyv2mx7 eld value between a negative and positive charge along the line joining5vl2z xlmwf67 py *o6z the two charges?

  Is it possible to have a zero electric field value between t4qcvgx*f 5u3 )q7ftyhwo positive charges along the line jo cx yh4uf3 t*)5vfqgq7ining the two charges?

  Electric field lines near psitive point cpkt 4(m) xxr2 t x-hd1u5hq(w8owq9htyh, dm (harges

  The electric field shownv -z8v)axfb82idfp )k

  Can electric field lines v*0y6f:d*8fm r qsuhdqfgb , 9intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a u r4xva)xqsm:u tmq88 0niform electric field. Give0:v84rm)xq mqaxs u8t a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equaoyg+q eo (d,,jl diameters are each given the same charge, the electric field (E) midway between the center aoe, d,qgo+(y jnd the surface is

  A cubic block of aluminum rests on a wooden table in a region whereo h: y)5u-ezqigzs:d3 a uniform electric field is directed straight upward. What can be said concerning the charge on the block's toidhuoz :q5e 3)-zsy: gp surface?

  If a conductor is in electrostatic equilibrium near an electric charge z/twu-vbc3baf 6 7 lo5/jy e3;i0xygm

  A positive point charge is encllyyvreo p/2) 5osed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the elep y5)l yv/e2orctric field at a point directly above the hollow sphere has

State three properties of conductors ):sl8vu vj.xffv 9p7jin static equilibrium.

State Gauss's law.

  The charge carried by od- q uq/;aubh)ne 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 more protons thanmq-syef(n 5jdh xr g6:m;hhds( 7 :ag( electrons does this pie es- ;dr(mhmg(7(y jd:nfx5h:6ashqg ce of plastic have?

  What is the charge on 1 kgjwirf(sp w6 cpm (4rjx53 b45h of protons?

  An atomic nucleus has a charge ofe6ml(db49 g n7kofow:0k4v q g $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, 5xv3dc g) : ,hapb7se0gs;jvz/uim 9 jhave charge values of 2.0 and -4.0 mC, respectively. What is the magnitu s: bu )aivs305ep vh9,jjgcxz;mgd/7de of the electric force between them?

  A 1.0-C charge is 15 m from a second chat l3e, *o,rvwhg qe(12wqapjma 3-w)q rge, and the force between them is 1.0 N. What is the magnitud3om(w-h3p r,e)lawq1gewv, q2ta* j qe of the second charge?

  Two 1.0-C charges have a force between them of 1.t zj8 dg)2pcn273 uqahlo, lf;ak h;7c0 N. How far apart are they?

  The force between a )k v1j8crovjo)oi-,yk l (-o +cgsld /$30 \; mC$ 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-ces1/ mglqy eo+7l2 3zN force. If they are moved to a new separation of 8.0 cm, what is the ele/+7o y1 l2ezmcleqg3s ctric force between them?

  Three identical point charges of 2.0 mC are placed on the x-ibtz4;d+0ba w 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 direction of the electrostatic force which acts on the cha wd+aib 4b;0ztrge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 xp 6wgq-j0)ofew3 .hnmC 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 magnitude and direction of the electrostatic force which acts on the charge at the orig6 q0enxwpjf3)wo h-. gin?

  Three point charges are located at the following p p09ji/sv.vz nositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC a9j v npzi/0s.vt x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plz6mgysrh 6: 5t (e3cucaced 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 force of 2.0 N actsh(m6cs:ey3g zu5rc6 t 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 (0r+j f .o uikk-3ysvr marw.7g5*r t7f-, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is k7rj .fao vs7ki.t+y-r wm5ru* gr3 -fthe magnitude 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);i9 16: h7mrf uxdea.eqnaph)uu n3-l ( Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC . hqlmunue(ed rah79i-6npu x31a:f) charge?

  Three identical charges of 3.0 mC are placed at the vertice;r 6eqw7gq4 lp osh ql6bh+x/2s of an equilateral triangle which measures 30 cm on a side.o/h xeg7 h;q+lrwlsqbq 2 66p4 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 s0oouz (k t.xo7f l)u7uajc1b 4eparated by 3.0 m. At what point, on a line betweenka uoz u(fb4 1xo70) o.7tlucj 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. W 6oi5yc*(g0p3 prdnxi here on the x-ai6cxdo5prpy 0gn ( 3i*xis 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(+6qo vixn uf7he9;ss x = 2a. Where can a third positive charge +q be placed so that the force on it is zero uq(ie7fovh9sns6+; x?

  A copper penny has a mass of 3.0 g. A toyj8,-jji9xy w :lput7tal 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 .qzwb5 j jhi6.by the attraction of a fixed proton some di6hbiq w5.zjj. stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hunt5lj c i6sxa(/g from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forxa st/5l(icj 6ces 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 magnitu wttn x)2zf ghl50e5k)de of the electric field at a distance oh nexl)w f2t5)t5z g0kf 1.0 m from the nucleus?

  What are the magnitude and direction of the electriex v3y gc45j/ng d)oa,c field at a distance of 1.50 m from a o )4cvn5gy,3aex/jg d 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudr9j8+4 g/kkerw lzdw7e of the electric field at the location of the testzw r47/8 lk grdw+ke9j charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofxe:5+ dvxy*q;et x t(a the electric fiel*y+e qx5 ad;tevx :(xtd?

  A 5.0-C charge is 10 m from a small test chajs e3;1tcj9w6id9o8mqy jx f,rge. What is the magnitude of the force experienced by am 6jw3j isc t9x8e1d,qfo;9yj 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 sey4n rr9(: fi bpmu+5jey+x)aoparated by a distance of 4.eynyiojru+( fp+r ) b9 m5x:4a0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed a)cjmxpl57 .v3mxre )qt the 0 cm mark of a meter stick and a -4.0 mC charge is placed p mq3rx)xe).cvmjl 57at the 50 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 meter stick ml5ryy4l, y5mz a,*xxy5lxo , and a -4.0 mC charge is placed at x l4yryxl*l5 mzoxy ay5, ,m5,the 50 cm mark. 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 v05l+ pqh (+(+wmv rxad gqj,ij46fypare placed at x = 0 and x = 0.20 m. What v 6(y+l q,0 +4+rpiadh5 pwvqfg j(jxmis the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corne;csv2 :ihll*fu c.- ners of a square of side 0.50 m. The last corner is occupied. -vl;*ic cnlh es:fu2 by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a s h,2sa7jckry/ twa9bf-: l+pdide. 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 electriw:rs d t hal2-+ bfk9yjpa/7,cc field at the square's center?

  A force of 10 N acts j4rqs/sqnh4 x(gflc.lz, 2-h on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thihq4zf(/ l-qxl,h 4jc2.gnssr s electric field?

  A particle with a charge *:n1 nfb 3)-q fjs)cj wbkco)jof 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 h 9tn skq x,i)o9rv(lu;1*uhcan electric field of 6000 N/C pointing downward. What charge must be placed r 9ux, vtl;hq9 nki*sc1o)( huon the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chak9)rm+gz -hnmpxr 77qrge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. +rp7nqz)- h7gmmr9 kx What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2 n e:wcceu ec136+n3zu.0 mC. What is the magnitudwne:3ue+zc3c 1 unc6ee of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a char5fb0o ybcxzvm2 ,x b43ge of 3.0 mC. What is the electric field 6.0 cb05m ,obvy42z3 fbcxx m from the center of the sphere?