State the law of conservati b8k:o1z*ngkton of electric charge.

  Is it possible for two negati+ fyyr yti mp (2194.bq+yklvwve charges to attract each other?

  Is it possible for a positive and a negative charge to attract (e(f(pwkh, hf ,oh pw93g o7ieeach other?

  A glass rod is rubbed wik j1xz 1zoecy/k,t 3+qth a piece of silk. During the process the glass rod acquires a zxo ez3/1kt1kyqj+c,positive charge and the silk

  A proton carries a

  The model of the atom sh6 8napv4 zz.,tucyuy.j +1 migows a

  A neutral atom always h+vyrf1b ln/s- pu26qh as

  An atom has more electrons than protons. The atolsd)u: -qby,ym is

  Materials in which the electrons are bound very tightly to the okoli))d ,u1.h-:bg oz:eg vbnuclei are referred to ai,ebv.o b:d:oh)kozgg)u- 1l s

  Materials in which the epf 1mdl .7o8 epkua1 b6looq6xa::m3e lectrons are bound very loosely to the nuclei and can movlfd6oel be1:om o8:716x ak.3ap mupqe about freely within the material are referred to as

  A negatively charged rod is broug y0,qqbur, 81r6gz wgrh1wr/ fht near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod1wfz,b yw 8gru6g1r/ r0q,hrq will be charged

  Sphere A carries a net positive char iyrv9 ;)r: c0hmtfp7mge, 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. Which statement is corry7;r chif0m)m 9:r tvpect?

  How can a negatively charged rod charge9 kxde k*o9s uqosf)x4/z*u2x an electroscope positively?

  An originally neutral electroscope is briefly / p kr,vep,138mlchvv touched with a positively charged glass rod. Th1 erm vppvl,/k ch83,ve electroscope

  An originally neutral electroscope is groun3 hd60odccl -d*x1 afz/ g5gspded briefly while a positively charged glass rod is hel3 do*z ghc5dxgac 1ds0fl/-p 6d near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electbqm1 ghec,242rqthm3gt .f4a roscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to t a2 tb,3.q gerq4c21gmhftmh4he leaves?

  A large negatively charged object is placed rprc6q7((9 a ivu xp-ton 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 touch the negative object. At nr( 6-7 uctrapx ipq(v9o 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 constand( 0w 4x;kyepe) x,anxt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a doh odqg er16(0istance d. The first charge is larger in magnitude( 0ro6q1oeg dh than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed n7p)ng:tc pi ogi9)j: wear each other on an insulated table. Which statement best describes the electr)79 n jigiwgcp)o pt::ostatic force between them?

  Two charged objects attract each other with a certain force. If the chargeq4)edwx,dqmh0)e02oz .ps k ts on both objects are doue2hsd zpxt00),k .)demoq 4qwbled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesx8w3 ej p5 f)lyy;t8gr of F on each other. If the charges are separated bf; 8yg y j8pe3wrx)tl5y a distance of d/3, what are the new mutual forces?

  Two charged objects avk aba7);/2zkgo )lcdttract 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 separation distance between their centers is reduced to one-fourth its original value? The force is now equa)) 2c/bakzl kv;gado7 l to

  An electron and a proton are separated by a distance of 1.0 m. What happens to bo yn6ckw;qb79-prn1the magnitude of the force on the proton if a secb;r1wqp- bc6n o y9nk7ond electron is placed next to the first electron?

  An electron and a pro,+(8ubi9;1e*rsgb sxph l hrzton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a seconhgrxirubsbh 9l*( z,p;1+e8s d electron is placed next to the proton?

  An electron and a proton are separated by a distance vgxq b )wghw7+q1+wh4.uhb/hof 1.0 m. What happens to the size ohx h.7+w/wh vhquw1gbb)q +g4 f the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q cgfgv43g: u/th 5b4ytr-x b6zis placed at the center of a square. When a second point charge of -Q is placed g:v t4bxgb 56yz cug-3rhf 4/tat 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 equiledw-u5nqd +gbt nm 6;,ateral 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 u-tbngem nq d+;d6w5,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 vtjumd:/ /02nia 8kovbector?

  At twice the distance : (; nxowgb+1bpq.xnc from a point charge, the strength of the electric field

  Is it possible to have a zero electricsro5/icza f70 field value between a negative and positive charge along the/705zo fsci ar line joining the two charges?

  Is it possible to have a zero electric field value between two positive*rjd+pokl( tcc7* z:z charges along the line joincdrpz7oz * lk t*(jc+:ing the two charges?

  Electric field lines near psitive point chargemrxim( gu o0uef85k83hz1 kgbj(x ,u8s

  The electric field shavr.c+upirr1a sx1vj6+m + /vso 3xz: own

  Can electric field ly chd*baz6fw;g 32+k zines intersect in free space?

  A solid block of metal in exj+ jm4 asnh :8-)5i)l fymkpdlectrostatic equilibrium is placed in a uniform electric field. Give a+spkdjm lmn5 :i-h j4 f8)yax) statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spher)kyo.z:jun l hz gq)c406i:lhe of equal diameters are each given the same charge, the electric field (E) midway between the ce igkc:hz)j .4oy)ln0:lqz6 uhnter and the surface is

  A cubic block of aluminum rests oncqa 5 6yh*u )) .;q3dti- ukefoaxo5fz a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the c)ki5 udz c 3hafu*)fqa.6y5;oo -texqharge on the block's top surface?

  If a conductor is in electrostatic equilibri/z as5k) dedj0um near an electric charge

  A positive point charge is enclosed in a holloo u*knmt-x:9rw metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere txr:m*9 k ou-nhas

State three properties of conductors twy j 0):k,sr4 .amscmin static equilibrium.

State Gauss's law.

  The charge carried by one electron is *ydrpnq+3 h1s$e = -1.6 \times 10^{-19} \; C$. 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 prot6pfe7nf o+e 2i.x mda8ons than electrons does thinp. 7em6fa +f2o8ixe ds piece of plastic have?

  What is the charge on 1 kg oft(fjr1vec4)u 2w 7bxm protons?

  An atomic nucleus has arluy6r*,nvx 2 charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by yq+q ,r1tq+ k15 ocdw- mfrd7z1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electo+tqy15 mq,1-z7 crdqrd w kf+ric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 d dsce vm7cqc4p33 8th-+c8pwN. What imvtw4 3p8dhp c7+c8 ds-qce3cs the magnitude of the second charge?

  Two 1.0-C charges have a force betw(z y*: (o z/sr )uob+7:thzwf(ehdexeeen them of 1.0 N. How far apart are they?

  The force between a ir+,k+:knglrbbvj + 8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experie5lpo(6m)dn6x wmi 1fn 0q2qgsnce a 1.0-N force. If they are moved to a new separation of 8.0 cm)1(d l0 6fosi5w qmmnpng6x2q , what is the electric force between them?

  Three identical point charge s2.z vxv;fml89vb+ pqywy.o)s of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 v.wbv)y.l y8m9+ xp2o;fqvs z 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 ftccs 7121efux-axis. A charge of +2.0 mC 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. Wh7csfft eu11c2at are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges a /v*ipe4iz v3.laydd21f u(fare located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00ed(.a 24* /zf3diyluvai f p1v 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 charge?

  A point charge of +Q is placed at the center of a sqeyo.lsz f74)k uare, and a second point charge of -Q is placed at the upper-left corner. It is observed)zfo7 . 4eslyk 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.+6e h:up4pcbqdtpjd4o 147 tv30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at ( tdo e7441:+dbtj u4ppqp 6chv0, 0). What is the 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); Qi d)pbx 5p2qp+3 = 5.0 nC is at (0, 0). What is the direction of th) dp iqpbp25x+e net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertu8/lnb3/ h gszices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elgh/n lbs83u/zectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by ri xgf7y2l8 g.3.0 m. At what point, on a ig 2r8x7fgy.lline between 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 th 1a ye4ikczt+x/i 2e5xe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chargee4ae x51/ 2kx zt+iicy be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. f: o4d-aigq4 mmukbk *4:* rp84awxtg Where can a third positit kaf* opu44rk4m qg ab:*x-d:4gwi m8ve charge +q be placed so that the force on it is zero?

  A copper penny has a ma/bnb.h+py f. ek)0npcss 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 ds4kwqvn0l0m5 - xt9,yoo9fw gravity by the attraction of a fixed proton sof9t00oxn 4lsmw9 wkvy,-5qdome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pointg)yvzkw;l , *h by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them wh*,v );lkyz gapart 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 5j5 siwb99*boi p2phf is the magnitude of the electric fi5f9spjob* ih 9i2b5pweld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at d.zy/gbotrmy56x,v 4 a distance of 1.50 mdg z x.ry,6m/5bt 4voy from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude oq:i.aw gs4nupe as.02f the electric field at thensa ew s0iq4u2p..a:g location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is9u9:icwsp b/a h(rt;2jx3ksw the direction of the electricaw kc;3bi(9p u wx 2j/ss:thr9 field?

  A 5.0-C charge is 10 m from ar7ltp(5h0ev +qpi o*s small test charge. What is the magnitude of the force exp pr70qhesl + p*i5(tvoerienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value oftd-i6u v u, mlbwd,. pj,.cd7. v:lmbc 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two p,muwv.li6. lu7c m ,.tjv-d b: ,cbddcharges?

  A 5.0-mC charge is placed at the 0 cm marfie*t3w ;* zg o:g5bkqk of a meter stick and a -4.0 mC charge is placed at the 50 cm markbq35;fzeg itgow * :*k. 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 . wjol4yg*dk7p pq5 (na -4.0 mC charge is placed pp5w q*(g.dko4jnyl7at 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 bozbzn t:o* m5 /-)rotplaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point*zn) btoobtm5 o-:z r/ midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0dq3 l /q8(l.cpkff p8 oin, 68dt3kcnv-h(egg.50 m. The last corner is occupied by a -vge 8 8p 6q(nk c.ndfd kht(lgflpoq,/3-ic 833.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. 5us s8n *: tri-mlie.,azk7ao Charges are placed at the corners of the square as follows: +za:7reil-soai 8k*s ut.m ,5 n4.0 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 charq uiwr 2d*(oc/ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of or(i/uc*qd2w this electric field?

  A particle with a charge of 4.yw fkg c1,8d)r0 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 mas6f 0tgahzn-uh60mt r(s 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be6fr(n 0t6mu hzh0tga - placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0/ddbb(higtss 2*l.1 a0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dil.* sd gbtshba/21 (direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 oy78p7zxe2l,q4i y (0kvvbrcmC. What is the magnitude of thp,q4y8vk 2cr z(x7ylveb 7i0oe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cam5n7 ;4l1d95)qydx sntx4t*rt: rx ufy)y xzzrries a charge of 3.0 mC. What is the electric fielu )y)xs1 nfxr 7d xmzyr9l*5z:y tqtnt;x5d44d 6.0 cm from the center of the sphere?