State the law of conservation of electricwr *dx38niuw7mai -s xu)7/xe charge.

  Is it possible for two negative charges to attract eachu u.a1 s 7ar2p-yd19mfgn zos( other?

  Is it possible for a pbp/i sdkxp k4(og t1;4ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of simdx9h u zmg029lk. During the process the glass rod acquires a positive charge z9mu2h09m gdx and the silk

  A proton carries a

  The model of the atoca58rsdw;sm, m shows a

  A neutral atom always h;z+77ki g *jc5loa;,g rdutptas

  An atom has more electrons than proto:+q dsywszz,al3gqdww . rd 4g90; d8vns. The atom is

  Materials in which the electrons are bound very tightly to the /.)mfxfzds8 q nuclei are referred qm)8 xsdffz./ to as

  Materials in which the electrons are bound very loosely to th:x l 3:2zcsl5m0t bmk fk:fq,le nuclei and can move about freely wizl0: t3cxk kql:fsmm,2l b:f5thin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.(c4f (fy0 d g0fqx(euu The end of the metal bar farthest from the charged rod willgyue(xd0((f4f 0 fq uc be charged

  Sphere A carries a net posi gf7,kb5ojfb(+og 4j j,l4ggitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. 4bk7gifl, oo5f4jg(g, jg bj+ Which statement is correct?

  How can a negatively charged rod charge an electroscope pb9x r 4,c)p:hms)g:fw biki,i ositively?

  An originally neutral el/*m h3q lw* f1cs1 trrd41zmmhectroscope is briefly touched with a positively charged glass rod. The 1sdhzhf *r m1m1cl tr 4/3mw*qelectroscope

  An originally neutral 4d)vabxofqs(b i/ :,y electroscope is grounded briefly while a positively charged glass rod dyqsbbfi /v( ) xa:,4ois held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves seccap 3x.jl87kxx 20d aparate. Then a nega 2xxkac378 .xjpd cla0tive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charge wrhiys r2o,ub m185(bd object is placed on an 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 touc b rh1sbw(y8,rm5iu 2oh 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 coc4p m3f;g.gcto+ hoh 5nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by 6f8.9 dkbcn, g1 uptika distance d. The first charge is larger in magnitude than the second charge.k6gc ik.fp 1,u8 tnd9b

  Sphere A carries a net charge and sphere B is neutral. They are placed near ev6wopm919. o bfg ,rex+w)( zvx k4sknach other on an insulated table. Which sm xpfbk,+g9 wkv1 eowvnr xs.oz9)46(tatement best describes the electrostatic force between them?

  Two charged objects attract each othemn6dn1 r0g nkgfi+.9zr with a certain force. If the charges on both objects are doubled with no change nzgg9rn6+kf1 0.id nm in separation, the force between them

  Two charges are separated by a distance d m1 qat3xp p.t1ns;6 bpand exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, wha;sbn3 p1ta .p6tp mxq1t are the new mutual forces?

  Two charged objects attract pdi)*,reb)io a+bv t4ycx.k0each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separro) ci*ibk +b0xyad4,e.t)pvation 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 distance of 1.j p7ihu3p -:2wui,g- 2ml 7ud hahftnpy/,a;w0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first eiw -u/p;alh3u7fwu22nyh,p7t j pgm,: -adhilectron?

  An electron and a proton are separated by a distancet : h8 88kl(tx9lpaxto of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the prot(a p: oh88l8txkxt9l ton?

  An electron and a proton are d z//zp8ygi 6xseparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 mxygzz86/d/ i p closer to the proton?

  A point charge of +Q is placed at x852dr0mxj -hwhk+ nnilj 4l8the 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 m 2dj-8n5jl i8whx4ln + 0hxkrof 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 centroid0p7( (d ybt rm4a,s 4xikeo4bu of an equilateral triangle. When a second charge (4sam4riu( 7 xebod t0yb,4kpof +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 vertices?

  Which of the following is not a vetuy 2w8 0 qnp(bamv-y8c4 ip;gi:e5ip ctor?

  At twice the distance from a point charge, the strength ax.vzg94y kndhh9. 6h of the electric field

  Is it possible to have a zero electric field value bely2k73 u3kh yetween a negative and positive charge alonghk3kuyy723 l e the line joining the two charges?

  Is it possible to have a zero electric field value between two positbhl8 u++p8:1l)c2y wum qdmus ive charges along the line joining the twb+2u +hsyul wul 1)d 88mp:cmqo charges?

  Electric field lines near psitive k q()-l- ojom+o,vt kgpoint charges

  The electric field showncsrc+fusyjp*-t;/l 9wh 5xj9oz;i8 d7h rv*s

  Can electric field lines inted)l)y2zti lj9rsect in free space?

  A solid block of metal in electrost wl1(ott(zmm48.odf z atic equilibrium is placed in a uniform electric field. Give am( .(fzt lzd om18two4 statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ztmune i*h/k (a1au)btm3r *+b -xdcsp:g8/r are each given the same charge, the electric field (E) midway between the center and the ss:g)mb 8-u*pxi tt b rr/ 3*+ encadk(/1zumahurface is

  A cubic block of aluminum rests on a wooden rhr 5;0wkqr29grcuk:table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the u rg9rw5rq r;0h2 kc:kblock's top surface?

  If a conductor is in electrostatic v+tu;u;:xd lzr1 ;cglqjx8b+vu+a4 n txn.r0equilibrium near an electric charge

  A positive point charge is enclosed in a hollwoz j;svqwi8pm 755 y,ow metallic sphere that is grounded. As compared tomowy87izvw,s5 ;qj p5 the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrq6izs ):hgnj- ium.

State Gauss's law.

  The charge carried by onlv; k2p vkhowgodqg6(6++/t2 d*k xiwe 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 moatqwk*f*2 g.0;b nzco re protons than electrons does this*fa.b2 t 0coz*;g qwnk piece of plastic have?

  What is the charge on 1n7-jvx 4b8qry kg of protons?

  An atomic nucleus has a chaorf5/:s8q(tmp3 s*-j xys kaurge 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 charge values of ls 0ye((6kg nq2.0 and -4.0 mC, respectively. What is thqn( 6eg 0l(yske magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them iz9nw6bk 6kjrs nw+w x9tf-w4 6s 1.0 N. What is th+nwbnwr 69x 4 swtjk9w6- zk6fe magnitude of the second charge?

  Two 1.0-C charges have a force between them os +/xuz7cfh 4tf 1.0 N. How far apart are they?

  The force between a , 5z(bchwh1 pt$30 \; mC$ 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 f-n 6uon5/:b(2rc*dmhgpc fl dks5waoe iz6:+ orce. If they are moved to a new separation of 8.0 cm, what is the electric forcfe ho5c/ :g56s2z6(dmrucd+kl* pn :- b iaowne between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fira-b:f cea/ /inst charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 /c a/-efina :bcm 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 charge of +2.0 mC is placed 9)ni nen* ;htxat 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 ;e hnx9*int n)origin?

  Three point charges are locateoozx2* khu m b;o2y22b5 lowaag13 +eod at the 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 zao2*o25 3 awl+ 2 m2yegku1oboxho;b m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center o +0f.b.3n0 wagisei u zxu0v s0oqu80af 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 acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a z x+ oinf083wau00ba0s e.gu qi.v0su third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m,nx 5a:fcesf .;fk/ ,56)w 4v czvngsnk 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 charge.z) fn;nsxkv f:45cg 6ws c5fakn/ve,?

  Q1 = 6.0 nC is at (0.30 ml1w u ipr,p-9 n c-22yzutwp5p, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What - pw,p yu-95p2lpntr 2i1cwuz is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plac9(ammcz u72 srap bco.-/i 7rned at the vertices of an equilateral triang a7 2-9pnb/cszmm (.auroi7c rle which measures 30 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 +4Q, which are sepdn(ezm ,)wk2 r1tv (ktarated by 3.0 m. At what point, on a line between the t)(nedvz 2kmtk( w1,rtwo 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 ijrya,u xv(,8r s at x = 4.0 m. Where on the x-axis can a third charge u a, 8vjyrxr(,be placed so the net force on it is zero?

  Charge +2q is placed at the oroo9/ /kcehi7 uigin and charge -q is placed at x = 2a. Where can a third positive charge +ok ciu79// ehoq be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t;risw. 3h+)zp zh+ncnotal 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 againsaep* wbfqk* w83 r-hf-azu)+q t the force of gravity by the attraction of a fixed proton some distance above + zw8f)uf-bhekr p*3aa- q*w qit. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point byjavw-vz 0fwzr ,43kp, nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces w vr-zw j0k,z,av3f p4them 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 magnitu0 wd0pda +iy5ede of the electric field at a d0 wiyped5a 0+distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fie 2l:rtxoo (d jx6zv7xifw3 7r*ld at a distance of 1.50 m from a 50.0-n *rzx2trx7ow x6i7l(3 fdovj :C charge?

  A 5.0-C charge is 10 m from a smaxdade3v50 gq;ku3 5x, yknbz wf4u55hz:bx8zll test charge. What is the magnitude of the elek 8q x xy45 zhwn:ugbzxv55;baz3f,d0d5ue3k ctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the 9prbsnglr xx-b 0(2i6direction of the electric fierb sp(ni-xb902 lrg6xld?

  A 5.0-C charge is 10 m from a small test charge. What is thh1v( / sx,uwjse magnitude of the force experienced by a 1.0 nC charge placed at the l( js1s uv/wxh,ocation of the test charge?

  Two point charges each have6r ki)zptkjn( a bv:y1jjd4;9))conv:m zj8b 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 betwjzj (bt);n6i):m cv 1a)4yjbk nv: opzkj 9r8deen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter z3*ezg9rld-qj(t :o a3pz u/wstick and a -4.0 mC charge is place- :zqtgu3pe 3a9/rd( zolj*wzd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 c 4 qom 6+wj9nolemvd w9/5/qwpqly ;k8m mark of a meter stick and a -4.0 mC charge is placl9 +qo 9/k;qm8j ydm5lewvq4w/ p6nowed at 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 placed at x = 0 andgo 6wbn6 ;p5vst*4 iwf x = 0.20 m. What is the magnitudw5snb wt i6gp o64f;*ve of the electric field at the point midway between them?

  Three 3.0 mC charges are 4v xkwb++m nxtv14sl,at the three 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 squarv4w+xlx ,k1tb+mv4 nse.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne jo.h 4 lb:lzo, 0lsoy4lq43pprs 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 llb spqj:.oyol 4zp4l 40ho3 ,at the square's center?

  A force of 10 N acts on a chargrvvp7h 1r.rc1 to)2br *f(lan e of 5.0 mC when it is placed in a uniform electrn rov hrv 1(rpaf2* l)rb.ct71ic field. What is the magnitude of this electric field?

  A particle with a charge of-)o7z b dx3hlb(dhs7v 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 poixq.bd u7jfq(2nting downward. What charge must be placed on the ball for it to bqjd.2xufq7 b(e suspended?

  A foam ball of mass 0.150 g carriesyd mvt+oy/b 72(xwxnm-e 0:advbgb,3 a charge of -2.00 nC. The ball is placed inside a uniform electric field y bd: wb,(ao +xm-e/xvm3dvn b720ygt, 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 carr1 7jbc;nhxpknm4(:y sp; kf.0dh9tz uies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the s;ysjpzhp 7tkn(fdhm0 ;. :k4 ucx n19bphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of j:.y 9buui 7dg 8d.,jj9mkake 3.0 mC. What is the electric field 6.0 ujjg,m j. :ebkydu 97.kda8i9cm from the center of the sphere?