State the law of conservation of 5 4kgpxg+ua x4electric charge.

  Is it possible for two negative charges to uyhl+,70irir j g0dn)wn,*tyn-7s r hattract each other?

  Is it possible for a zcl06l1ay( msxxj6b; positive and a negative charge to attract each other?

  A glass rod is rubbed with a pien..tmfmec7 z ;ce of silk. During the process the glass rod acquires a positiveze.m;nc 7t.fm charge and the silk

  A proton carries a

  The model of the atonp2e u c20sd:zm shows a

  A neutral atom alwaysgsbfgy,8 er-xw0-(,d a qte4a has

  An atom has more electrons than protonsilug-du+7b athf3la1.jz pqsr/ (e42 . The atom is

  Materials in which the electrons are bound very tightly to the nuub :8bm.urf payu;p)1clei are referred to aruu8f1.:u ypm; b)ap bs

  Materials in which the electrons are bound very loosely to the nuc5)gv 7rysyp5qlei and can move about freely within the material are refer gy5ysq5r7vp) red to as

  A negatively charged rod is brought near one end of an 9b4- m eruj8cf2f-mfsosw q2, uncharged metal bar. The end of the metal bar fartfr9s--j s 4fu8b2w emc,mf 2oqhest from the charged rod will be charged

  Sphere A carries a net posopb9 -:cf qt i3q.eog6itive 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. Which statemeng3qoc9 e.bp: 6 tf-iqot is correct?

  How can a negatively chargedg q pd-*t3-fy,2lhdxv rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiv)qwci.+yd*rarot- cps -y8c,c: 1 dj xely charged a8cdc)1dci-y s+ xtpyr o *q.,: rj-wcglass rod. The electroscope

  An originally neutral electroscope is grounded briefly whil/* jgzt7z 9beke a positively charged gkg7b et*9 j/zzlass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touchk2 9f rct7r8fies a neutral electroscope, and the leaves separate. Then a negative object is brought nea72irrf9tc8 fk r the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table0n9-sds: c/leecxwn o 336: h9 uonh:ec;hmwb. 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. :dwnc:0m39clhuee -:sosho h9 wcnex/3n;b6What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb consta-l 18jlu 6kyuent $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charr 1d v- ,w;y)q)jpqipo5fzv8 ys6gv9nge is larger in magnitude than thezjgsw;fv 1 qyy,pr9)n -v6id8o)qv5p second charge.

  Sphere A carries a net charge and sphere B is neutral. They 8ygjaby81+ hvs8u.e gare placed near each other on an insulated table. Which statement g1 888vjyb a+eg.h suybest describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the sw 29r3cfv/2 -ufdxhwppvn xy5x 2z*-charges on both objects are doubled with no change in separation, the force behw5v3z-v/y9xdp 2 *x2xff sc2wrpu n -tween them

  Two charges are separated by ,1g4 l0tfsn fea distance d and exert mutual attractive forces of F on each other. If the charges are separated by a d0el41 ntf,gsf istance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a qqv6/1i ;.ku n+uqbrnforce 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-four ; k6.qqv irqn1n+/ubuth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What(6 q 40 fxygnze85gpay happens to the magnitude of the force on the proton if a secn60gyy z5pa fexg 84q(ond electron is placed next to the first electron?

  An electron and a proton are separated by a distance7uf;0y2q jmi w 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 proqyw;0 u7imf2j ton?

  An electron and a proton are separated by a distance of 1.0 m. What happeny4r2i oz jz9x m0d1zm71a6m dfs to the size of fz9mryzi0maod2461 1z7mxjd the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. p iuz4m*kl))tzy c 51pWhen 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 square. What is the magnitude of the net electrostatic force acting onl ) 5tp)kcmiu yz*z1p4 the positive charge at the center of the square?

  A point charge of +Q is placed at thew v*, rn,il:nw13* :svufy fpu centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of :rvfi*pf,*wu,unvl s: 3 nwy1 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 followi9(w-unute. rg w-zsj9ng is not a vector?

  At twice the distance from a p*ffjtm.+7ub19mzvh t*knqi 2oint charge, the strength of the electric field

  Is it possible to have a zero electric field value betweegfyh (qz;- d8hn a negative and positive charge along- dhy8h(qz; fg the line joining the two charges?

  Is it possible to have a zero electric field value betgyr3fq2 ,oo)nxg2+hnn6 n x /lween two positive charges along the line joining the two charges?nn/lo6hgfo n xn3qg ry2x+)2,

  Electric field lines near psitivxw;l:la ; jo,ie point charges

  The electric field shvf0q)nz a/y8 wkg7eq:ky +;n qown

  Can electric field lines intersect in free 1bf tcioz08,h 6+d)j((o bm pin et)xnspace?

  A solid block of metal in electrostatic equilibrium yc; qfk3 bnkif7 /5sp6is placed in a uniform electric field. Give a sckqs6 3f7fby/;p 5in ktatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal die kjjtt*7wu*w5js 0s8ameters are each given the same charge, the electric field (E) midway betj ts7 s*uw0 t*5wej8jkween the center and the surface is

  A cubic block of aluminum rests g*g)*1fero le0 g4ipvon a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blofo * ge)peir01g* vgl4ck's top surface?

  If a conductor is in electrostatic equilibrium near an electric chsz2 g4(ss4 96vg: ro/jaccoefarge

  A positive point charge is enclosed in a hollow metallic sphere thatp*69hc eptd n. is grounded. As compared to the case without the pect*6p n.9 hdhollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equi1:g6+ svnu9 mz,ib) khxj5zbzlibrium.

State Gauss's law.

  The charge carried by one electron is ( swmy5.m 8gwe$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge 9awadhc9zlohn7e(s4 p /pepnn21i: ;of +2.00 mC. How many more protons than electrons does this piece of plas9p:lhed (n79p oa zpae s4n;ch/1n2w itic have?

  What is the charge on *se4rhs 7j(kp1 kg of protons?

  An atomic nucleus has 9mrole,: jyvniuoi 6qw70 v;3 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 charge values of 2.084oii2 jce19y a.g8: ifr ntjh and -4.0 mC, respectively. What is the magnitude of the electric force betwe1a89 y4ficejri. :no ijh82g ten them?

  A 1.0-C charge is 15 m from a second charge, and the force b3b lrj0nqiazn5-xsm6v)8 : ggetween them is 1.0 N. What is the magnitudq6rg igxnv j5: s8bl-a mz)0n3e of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far d8ni tqcqa 15+apart are they?

  The force between a qeizy0kb1ne mu 8 ,5p2j(f:e u$30 \; mC$ 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 forc spfh+ 388 (/*b/hqsz3m5nt3;wvudnzi oohlre. If they are moved to a new separation of 8.0 cm, what is the electric fzh(/sqb88 h rvupo foms5tlwdi/+3z 3;n*3nh orce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thw0hzb-9 4 r(ouv3 ktkde 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 w9 3 v4rthuokz- kdwb(0hich acts on the charge at the origin?

  Three point charges arey 1etb7 wxl-di, s25k1 ,l21ay jcdhdh placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 1bd1txwkd1j7 2lh 2, ,y5 aydl-hcesi 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 = 2.00 mC at x = me s*(kqci47 9bx5omy1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the fs5m4 7xme9( oc*bky qiorce on the 3.00-mC charge?

  A point charge of +Q is placed at the cen 0r:y0oljpwy + 15xvbrter of a square, and a second point charge of -Q is pl5:0ylo1 rvp+wr0jxybaced 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Qp,t bxsk*zw ;80r* zg vq.ebj13 = 5.0 nC is at (0, 0). What is the magnitude of the net force on txwkvb *pbjrg8;tq. *ze ,zs10he 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at4( nfp2bs9l6 n4z7ciw-gts 3eh u4tgy (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i tuh (9l i744n-z3g fpgny2csebtsw46 s the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placeuhj-k s6m okv8i7xa.:d at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude ofk :uh7o6. smv-ijx8ak the electrostatic 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 xx ;i/r :s0cenro gh6ial),w: point, on a line between the two charges, would it be possible to place a charge of -Q s, oswrxi6 cxh)an: /0lig:e ;ruch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C c3k(p; *nqodrv harge is at x = 4.0 m. Where on the x-axis can a third charge be placed sov * (dqn3ro;kp the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = mfo bcrkv1/1.v.rx:c . xbc7 b2a. Where can a third positive charge +q b 1obx/ k.cx1r rfbc7.b vmc.v:e placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A/-q cuiu k yfk/7(b3kk 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 graf5jv.e 4 +aglmvity by the attraction of a fixed proton some distance above it. How far above the elecgj+45 evl. maftron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads ya0*lt-i, lui51rpgv which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle p -1ul0 i g,talri*vy5between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the ejvialmig .y,8;o -eoth70s + +tcv5ftlectric field at a distance of 1.0 m from the nuclgtolj 5; 7ciiya+ h s v-+m,0o8tev.tfeus?

  What are the magnitude and direction of the electric field at)jvyxvgg rzsx;lx)t c 6- zl6 -n..:acg3yon1 a distance of 1.50 m from a 50.0-n)gc n; gxyo 3j1t6a.vzx.ycg) :-l nlzsv 6x-rC charge?

  A 5.0-C charge is 10 m from a +22c. /alpao au(ke sfsmall test charge. What is the magnitude of the electric field at the location of the tes+c 2/.p2aa(of seual kt charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio yze:biunew3) z9v y4lq3 w83r.6knkc n of the electrv9k3lcw.4be3)ykzi 368uyz nreq nw :ic field?

  A 5.0-C charge is 10 m d),7s1r 4gv8rldq cg u0eepa:from a small test charge. What is the magnitude of the force experienced by a 1.0 nC0q la14ge p,cuvr:e)rdd7 gs8 charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separateb*g9qazt :kgc;erb.q) 9ngh: d by a distance of 4.0 m. Wgzh:*tcr9b eaqn ;9qgb):k. ghat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm lm dst r7(m:;whi8g4pmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric;7( 8iw4dlmmg r htp:s field at the 30 cm mark?

  A 5.0-mC charge is placed at ) e i+/ .k;3, zekv4e d.k b1hqp*kpjsth:zuybthe 0 cm mark of a meter stick and a -4.0 mC charge is placedbk1h :b/ zps)+*,uyqh d3ek.z v4;e.kje tkip at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of 8;,t2bzl tvmnfudz7:r j+ )yq+3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitudeu+lqv7 ry z: mjn,b)2df ttz;8 of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sm fy43d:ilj-oide 0.50 m. The last corner is occupied by a -3.0 mC charge fm 3ldyo-ji:4. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thehc , ,886n6 o vc6wo3pw +pmxfwkbrf8dvt -nm6 corners of the n8xw6wfm-r +v h opv66d,c no8cf,8km3 btp6wsquare 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 center?

  A force of 10 N acts on a charge of 5.0 mC whe8wmqtc qd y+/6n it is placed in a uniform electric field. Whaqy+mt/q 8 dcw6t is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass gpk;mjme;* kwa+ hj;f ()b0+knwlb9oof $5.0 \times 10^{-3} \; kg$. 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 poi1sc.v j01fdkt 68xohnnting downward. What charge must be placed on the ball for it to b1fj 0o k86dxs hcn.v1te suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed s6hobt4;gd *i inside a uniform ei6b*st4;o ghdlectric 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 chavn flmg2 r+3 ;l;vveu-rge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spml -2;v;ue fl3vv +rnghere's surface?

  A metal sphere of radius 2.0 cm cashel1c3baxl 0*/huj ( rries a charge of 3.0 mC. What is the electric fljhsc1ehxaul/0 b* 3(ield 6.0 cm from the center of the sphere?