State the law of conservatiy*; khl*8m4lmsnz 5pjon of electric charge.

  Is it possible for two negative charges to 63 afaf bz yqvr792d0zattract each other?

  Is it possible for a positivenqqo2zc l3*. midud-* and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk zevsnci;/(t7fr :0lj. During the process the glass rod acquires a positive charge az0; c7: vseifnlj/(rt nd the silk

  A proton carries a

  The model of the atom showonqve;p:z m(lq r;68m s a

  A neutral atom always h 3 n6gm-bbvx7 1vcauu8as

  An atom has more electrons than pl1;zz-v e(cvkp3 r/m iuj;6, l *ynmxcrotons. The atom is

  Materials in which the electrons a,. jvnmyc44hs/gj l/c-d6.usq hsla- re bound very tightly to the nuclei are referred tmdjal/ s-vlh/un 4s4qgc..jhy,-sc6 o as

  Materials in which the electrons are bound very loosely to the nuclei and capu 9jwa,q*w p/jf 7pv;n move about freely within the material a;w,pv *af q/9 7pwpjjure referred to as

  A negatively charged rod is brought near oneoc */ a* .ycqqk3*dzlp end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be c k*3zpldaqc. c /yqo**harged

  Sphere A carries a net positive charge, a.ttc-vrpqmv 9: me0 ;: n2dlx fo c.qa;+btt,ynd sphere B is neutral. They are placed near each other on an insulated table. Sphere et;v::p.c . +,cttn-;a xmrmfvqqy obd92t l0B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopsbvu(4,pn;vig h0mj :e positively?

  An originally neutral eox+.c /w.zplf lectroscope is briefly touched with a positively charged glass rod. The elect / f.wol.px+zcroscope

  An originally neutral electroscope is grounded briefly while a uu srestw9d.,ciby494*( p dbpositively charged glass rod i*i,.4 dys u9c 9twbupbsr(ed4s held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leg7uh,w8b6q-m hm 5hofaves separate. Then a negative object is broughth f56mq,umbh8w7go -h near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placewd2ug(z);7b( y bufn sd on an insulated table. A neutral metallic ;ufs ubyb(dw)g(nz2 7ball 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 final charge on each ball?

  Charge is

  What are the units of the Coulomb c+pj / (;kupn85yqe;7 j znclwbonstant $k$, which appears in Coulomb's law?

  Two charged objects are separ6b(paspl e,n8 ated by a distance d. The first charge is larger in mp e6(ablp, s8nagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. 32,xhd ij jx4rThey are placed near each other on an insulated table. Which statemenx h,d23xj4 ijrt best describes the electrostatic force between them?

  Two charged objects 4jwc0gi4es0:m)yzn j attract each other with a certain force. If the charges on both objects are doubled with no change 4mgy jj)0:0eiznw4 csin separation, the force between them

  Two charges are separated by a dis,0p9 wm.x nh;oieie*ytance d and exert mutual attractive forces of F on each other.o nepxih,* ;w0ei9y.m If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects a(w 8 sink78bve7dcb.qttract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the s7qcd is vk.(n8eb7wb8eparation 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 auv)5 hku,h k+k distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first el) ,kvh+kh5uku ectron?

  An electron and a proton are separated by a distance of3 gltke6ymg47a eh,ql*hl2 m7 1.0 m. What happens to the mag*h 73lhl6ggtmke 4 ql,amye27nitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1yysf-w8ud z r -) *5mcx4mjw8j.0 m. What happens to the size of the force on the proton if the electron is movedj* y s4 w--jm)x5m88wzuyfdcr 0.50 m closer to the proton?

  A point charge of +Q is placed at the2yeem*5 sj)no +m8.fql op1 at 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, identiqeo+ml1 .yp)t mf*jaso52 e8n cal 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 centroi(to mpqe)gch kp, *ep0x o t(xum():f4d of an equilateral triangle. When a second charge of +Q is placed at one of the t)kut, c q *g()hepexo(tp oxfmp(0m: 4riangle'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 i ayi4g/ 9q5(+6limxa ayii:vc s not a vector?

  At twice the distance from a point charge, the strength of the electric u-(prh -/q5v tfowx(3k*r 2/mabol fjfield

  Is it possible to have a zero electric field value between a v3jes)yc)30au /tpop negative and positive charge alcpy33p vja/e ts0o))uong the line joining the two charges?

  Is it possible to have a zero electric field value between two positivtyq wp l(qr1f.9-zd(6lzf n8ae charges along the line joining the two charges?.ly8 9lqptfqz( z6-w( 1nrdfa

  Electric field lines near psitive pointbkq.r 9 opqm-hzw5q77cdt i/. charges

  The electric field show(vhj3 ge;bi m(n

  Can electric field lines intersect in free sp-ml+mv1if3j mace?

  A solid block of metal in electrostatic equilibrium is placed id/ys hvawi09-x3q7 awn a uniform electric field. Give a statement concerning the el-w wv/ siq3xh0yda97 aectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eqiimuf2m )t;. ob.ok7j ual diameters are each given the same charge2o.) ;iimmb oj7utf.k , 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 where5x vzpo,eq+q0 a uniform electric field is d zo5p vq0,ex+qirected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrr4ibs447stw s -cx,fk ,vt(41sycdpj ium near an electric charge

  A positive point charge is enclosed in a hollow g:42f ,suf*:ia g vm/mxmci8fmetallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollowm82vs:g fuf4ci fia,:* m/g mx sphere has

State three properties of conductors i2hs 9+gxbg fp5*ta:n qn static equilibrium.

State Gauss's law.

  The charge carried by one electron isk7o xrf*)d957 zxlh qf $e = -1.6 \times 10^{-19} \; C$. 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 2)l x9ou rngqc,v6c4i*hfz yyjc1 )tw +mdu0 1protons than electrons dhdui0+wo9)cmv1*2rqj 1ux c4z6f t y l)n cg,yoes this piece of plastic have?

  What is the charge on 1 kg of prot s: ,l)yod0yccons?

  An atomic nucleus has kh*3fk *cce cmm5s9(g a charge of $+40e$. 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 chargez(cz2yo3ci 68xi 1oqe6svdf 5 values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric sc1 cq2(6ev8iozyd6f53 ixoz force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.y*f mz o.v88;ga2fbrk 0 N. What z2yfm; 8.k 8brvog *afis the magnitude of the second charge?

  Two 1.0-C charges have a force between twrn w;njf f,)9hem of 1.0 N. How far apart are they?

  The force between a n-f hum/zke(se8h5 n6$30 \; mC$ 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. If thhm-g.ky)wwv. l2*)y.o:+ rsnh roa yewl8lg0 ey are moved tl l:y-o. 0rolhvw*ww8asy g. gh.ey+mn2k)) ro 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 x-axis. The firstv 2/jj uv*gxy0 l5hng0 charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm ma0g n052ghy vjj*/vlu xrk. 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 pw loe 5 ,e5und7uxzr f3/t2vph8jm-6 tlaced at the origin, -2.0 m C to the rig-52mfpzj 6ux/n 3hwtdvre 5t 87 leo,uht 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 positionsrz:h1n(ak 3 zc/en4u f: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = e c:hzrk3(1uznaf/n40; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a8vjnn+e/bupz+5.h0l l fl8 pb 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 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 cojl/l+pn5b hf+zn08u. p 8bvlerner?

  Q1 = 6.0 nC is at (0.308 6l0v ip,2qzltm 6)9q faf)lisr.kuc m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC qfl8vsipra). kl6q,) 69tczf02ml uicharge?

  Q1 = 6.0 nC is at (0.30 m, 0); d,ac 6dq1o; tx6/ded-z cp ,guQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net foqddgpcu6eo6ca - t,1/zx;d,drce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the)5mkb/hwfs k:f9 r69lfy ac 6y vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostaticfs a ml9wchy6 :r69ybfkkf 5)/ force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what bb(9ff3 fbh+apoint, on a line between the two charges, would it be possible to plab9 b+fa3( fhbfce 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.5s:7kx wy4vw ktct :geev m1/- Where on the x-axis can a third charge bx e:-7cs ktevv51t/m k w4wy:ge placed so the net force on it is zero?

  Charge +2q is placed at the origin hft( k5v b2: ygr0q3eaand charge -q is placed at x = 2a. Where can a third positive charge +qk2f a35:0rv(qb hteg y be placed so that the force on it is zero?

  A copper penny has a mass of 3.c71 p/kw3 qriw0 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 gravity by the attraction of a fixed* c.k vxuo/2:. vhvnte vx v e.vn/tc*.2h:uokproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres ar4z dxmc1dph29pz ;g s6e hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fozgh6p 2xcd;z4md 9sp1rces 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. fi f p-tjxf j*t2cf2 (.2ofu/v What is the magnitude of the electric field at i2t2tx/*f-f .jfpcoj vfu2f(a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of t vt88 e 6c-m gb4zl9t/nuk7qlahe electric field at a distance of 1.50 m from a7 ntql ac-/e6 kb4tmzv8lu8g 9 50.0-nC charge?

  A 5.0-C charge is 10 m from a smp6scl z2o9hl: all test charge. What is the magnitude of the electric field at the location of the test ch:ll6c2hsz 9poarge?

  A 5.0-C charge is 10 m from a small test charge. Wha b4 qycq.(y x/lrwzg;w36,qhxt is the direction of the elez(qrxl4 w,x chyq/.wb 3;6gqy ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the x u .h r)ngu(*jfxo);:rvidu( magnitude of the force experienced by a 1.0 nC charge placedx.)(i nr(dxv)*fuu:r h;u jog at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatxbn:u 2cb lv02osx6n y(dga4 3ed by a distance of 3yb (22u l:d46bsvgx ncano0x4.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is p dt.ha f3 b5fut i;9k+c),2 )o0t7ewtghm yuzjlaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at t30cikb at. )utd ,u5f)+7tjye9f m;gzho2wh 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 and a *525khch8zc,z3 omt mkkerot31i7v a -4.0 mC charge is placed at i c1h tz2ko kme 8tkav,3o 3ch75zr5m*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 are placedqa.9v*khf;mfv r 3m b;uyqt5( at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between t .;ym3 v;v aq5mt*kh f9ubqf(rhem?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 ma+ql x-p 1m80bkfp*t t. The last corner is occupied by a -3.0 mC charge. Finp qf+-k a*1tbt8mpx l0d the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Char ju-ed4;vhbm,kkct)1w9 e m)uiz)c . uges are placed at the corners of the square as follows: +4z)c)-u .id 41;u),ewechmbtvkmuj9 k.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 chfk7/ur d8w.se arge of 5.0 mC when it is placed in a uniform electric field. /7 fe8dr.sk uw What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a massq3lthu)p1 q7h l oha-1+uf2br 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 isx a:wt*6zsaw4,syjai:k*z * g placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspg *azw*:i awz:y j,6*x4sktasended?

  A foam ball of mass 0.150 g carrietr.c1q(jws 2u a.j i2ws a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against.i w2(1tuq.j cswj2a r 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 mC. Wh4rho 1ffh 9elp .m6nd.p95ql 73rlztp at is the magnitude of the electric field 5.0 cm from the sphere's suer959d hzofmn6 p.37 qll lph1p4 .tfrrface?

  A metal sphere of radius 2.0 cm carri;zb: jk; i-gewes a charge of 3.0 mC. What is the electric field 6.0 cm from-zgk iw;j; be: the center of the sphere?