State the law of conservation of elec/i dt1mbms x :r-ndt.jeqp8188( iorse q7le: tric charge.

  Is it possible for two negative charges to5.x f ujcplr * 0,hkqa0is6;jh attract each other?

  Is it possible for a p7 bm4 eq;d;u8(s8*fjcl6ouvzcj 1wbo ws 66xq ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of si pm1;6kbw eid-7dxgk-lk. During the process the glass rod acquires a positb61dmg 7kw-pxke;i- dive charge and the silk

  A proton carries a

  The model of the atom shows acm 7-x7h sbz5j

  A neutral atom always c8khiv2 j84 eghas

  An atom has more electron:h ruri*6 e;zrp +ljzy6+1atms than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuch up s*(:r nu8:lyywk*lei are referred to hly8krwuy*n :u*:p(s as

  Materials in which the electrons are tmlf aw 2e:ns3nc-s17 bound very loosely to the nuclei and can move about freely within the materia2an7 :3-s1mslfnetw c l are referred to as

  A negatively charged rod is brought near one end of an uncharged metalc u6rhg9r2s*h3,jj -nw5vt bv bar. Therg,2w3jjut*hnvv6b -rch9 s 5 end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positiamp b0 krdc63vg.1/lc ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B ilbpm a/vg krdc .36c01s briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargewgqxw q 2q:1k mpts*48 an electroscope positively?

  An originally neutral electrokwgdzrl nbzmn2/* cm28/ sb): scope is briefly touched with a positively charged glass rod. bdmz:kl bwg2c /n/mn82zr s*)The electroscope

  An originally neutral electroscope is grounded briefy :wuw5nzlqe-e, j e-0dl jw+9ly while a positively charged glass rod is held near it. After the glass rod is removed, the elecqnwwj9euz,:-y-dl e5 l0jw +etroscope

  A positive object touches a neutral electroscope, and the leaves sepae v;s6iqm9;b zrate. Then a negative object is brought near the electroscope, but doesz m;sqeib 69v; not touch it. What happens to the leaves?

  A large negatively charged object is pla4 wbhk4q ubyejy)+l3f c,ox/pg ok),1jm b3 l-ced 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 touch the negative object. At no time does el3mgbp4)4yxhkl +j-yq)b jk cof/,,oe1 wu 3b ither ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units oi oy+8vqtqxh g-1/9mxf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l4gxksm351 ,1 t+h0spvznohxr arger in magnitude than the secondx101 svhh xz,435n pstgrkm +o charge.

  Sphere A carries a net charge and sphere B is 3tgct0 j/ymz(neutral. They are placed near each other on an insulated table. Which (/z3jt0 gytcmstatement best describes the electrostatic force between them?

  Two charged objects attract each other wioxw/ wrt a8vqpa6 hotl )o laa-d31(:7th a certain force. If the charges on both objects are doubled with no change in separation, the force between theo/8h o7oalvdqw3rx6l-t apt1:a w)a(m

  Two charges are separated by a distance d and exert mutual attractive forceq0 zmymb+yv* 2h(i i(os of F on each otm((ymv 2ii 0yqoh*bz +her. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attr/9czn(tnayc8(g d bfx ,yvjcff8 bb7p;0l a.)act each other with a force F. What happens to the force between them if f vbc.( d/ ,pnxztabj y;cl8fb9) c80afy n7g(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 equal to

  An electron and a proton are separated by a distance of 1.0 m. What h0gg2di9ssq/yy . .dehappens to the magnitude of the force on the proton y90sdgideg q/ys ..h 2if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whatm51 dwkfti3c* obrn0 : happens to the magnrf d0m*o: w1i cb5tn3kitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton afs 31owba5m3tmc+ cjbk+ c e9i9+9o zcre separated 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 m cl35 s aztwcib+k+c9b+j o cmfe3om1c99oser to the proton?

  A point charge of +Q fgqa)zny,jf)7g 7l,b is placed at the 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 square. What is the magnitude ogq)lf7 b g,7nyf a,z)jf the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is p9rczbm zenwa).xv *; ,laced at the centroid of an equilateral triangle. When a second charge of +Q 9* zvrba zwxmc;), n.eis 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 nokmo) o:6;y .q( ezozxit a vector?

  At twice the distance from a zeiqvtyg9b3f i:e+ ma6 64+pk7v/iq ipoint charge, the strength of the electric field

  Is it possible to have a zero ezi07y)ir 6 nln:6 ccgglectric field value between a negative and positive charge along the line joining the two i nlz:y)c6r07gi ncg6 charges?

  Is it possible to have a zero electric fit;f.5eahs1-epf0r y hk8tyuo xw5 39geld value between two positive charges a1 ;e0yt5-kfs.g39hyewphu 5 fa8rt xolong the line joining the two charges?

  Electric field lines near psitive point chapv,w z 71hh)i0- 1yzm, 3ghjwd*ciyhirges

  The electric field show m7 gs,yv th19)hr0thdm v9h, v(yvy+yn

  Can electric field lines intersea ;,rotrmx8* sct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elecz4 /adpvp, 2ictric f/ d,p24vczpaiield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphe t 96-h j h.cv:w:s/pnqyoqo6ore and a hollow metal sphere of equal diameters are each given the same charge, the electric fiyqv /h: -. w9sohjqtco:6pn 6oeld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table inpes4128d4oso rrtg h0 a region where a uniform electric field is directed straight upw 1e0 s48r2thsg4 prodoard. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrichw:fyi 7/l da6 charge

  A positive point charge is enclosed in a hollousdc*j r( 2enrfh7l92w metallic sphere that is grounded. As compared to the case without the hollow sphere, the ele 2df c unrslh(er2*j79ctric field at a point directly above the hollow sphere has

State three propertiea94hp )aed1 ybs of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one7 i18ob+sw ;a:utib u31enci y f-du)r 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 ho,p78l di37 (qebgzc uas a net charge of +2.00 mC. How many more protons than electrons does thi bz (7ic,odq u7pe83lgs piece of plastic have?

  What is the charge on 1 kg of lymi+( m+m5d vprotons?

  An atomic nucleus has u8cw) bt 3*xt,rypan*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 chargebc7 t )bsv /dxfbrww:, w xlkm;r9;r2: values of 2.0 and -4.0 mC, respectively. What is the magnitude of7rkw rd:b9vc/tbw)sf l:x w,2;rxm; b the electric force between them?

  A 1.0-C charge is 15 m fromve7a 9bit,8mh a second charge, and the force between them is 1.0 N. What is the magnitude of the second cmh789av,ibt e harge?

  Two 1.0-C charges have a force between them of 6h2:mwo0jdqzq0 h rcvl/wv23 1.0 N. How far apart are they?

  The force between a 8nmzx:6 ex68g/oegc f$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart +pnwtd :j;3vzg g:k4f, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the+3 zgkp:w:;j4 ntdvf g electric force between them?

  Three identical point charges of 2.0 mC are plac jq)e la1y)5gw *a/fusewjd,(ed on the x-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 charge at5)jwg d1(use /)afja*w,ey l q the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is qyqt 2hb .+.b mrl)xm,c j*.*vcw fw9rplaced 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 or.blrmqjxc.)q ,wb fw*tc.y *92v+m rhigin?

  Three point charges are located at cti5+wxq h..4 d34 (jtcj,ireu3bzsfthe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC (i4.5e hj4+j3urcw x3siz f tq ,.tcbdat x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q ; )pen7 qe6ycopd. 7fd.97w mquky bp-is placed 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 acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a;77q kp6buq7e 9 opwfc)n.-mepydd. y 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);iwz 8;4uddly 6uo cq)d:b( 3bl Q3 = 5.0 nC is at (0, 0). What is the magni b w:d6)i4o8ly dlucbd3q;uz (tude 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.i hw6 l h),ug6t4r3dqg10 m); Q3 = 5.0 nC is at (0, )h6g ,i 4th3uwq6gdlr 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC a t9jg83k;lavn re placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatkl9 8ga3 jt;nvic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3nsdp3x57ne xj s dvkq*n,t5t+x .bts)z n7)j 4.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the j xb v7d)+5e4nnqsxsnkt z*pd3. ,n jtsxt75)electrostatic force acting on it would be zero?

  A +3.0-C charge is at theu b q5eqix;ckn 2e(1b1 origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charg1bn(u5 x keqc2 e;b1iqe be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chiz 4vgx0+1a woa(qi-e arge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it ixe4 +ia0a-i v1oz gwq(s zero?

  A copper penny has a mass o3p5;x, 0c1ngqwjc sqt f 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 gravitymmhq.ubo*: l o;hv-so,b;d .q ejw+j2 by the attraction of a fixed proton some distance above it. +bv;q obwo*j d m-q,e hsu.:ol.m;h 2j How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tnice/x )qbnfd1)u;/5o ob 2aotc(2h m hreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fo2q 5 u xnc/cbn afbot/;d()o)2emh1iorces 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 magnitude of the elec 9/byzqmne3 ;ctric field at a distance of 1.0 m from the nuc9y n/zm3ce; bqleus?

  What are the magnitude and direction of the electric field at a distax8 gi b b z te0i3p2k0l7asdi/ad2m(4vnce of 1.50 m from a 50.kd iib/d 7bi(2 eaz0ptv30s24xg mal80-nC charge?

  A 5.0-C charge is 10 m from a smalu; -apun0cz9bpf8 *qy l test charge. What is the magnitude of the electric field at the location of the tes - u0;*pquynap98zfbct charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the q peu)x*x e5lf0uy+ 9eelectu9xxeu0fy +*l) peeq5ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fx,+fsqm0t ly4 orce experienced by a 1.0 nC charges,t 0qfm+xl4 y placed at the location of the test charge?

  Two point charges each have a value of 5a2v:0jqedujn q-w1 s3.0 C and are separated by a distance of 4.0 m. What is q0svu 25dnqj1we:ja - the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at 6cx wh k*1m;y 2rpklu1the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 2w6mykp1kc* rhl;x1u 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 /n0c5b)peb v:sqbs w+ and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jcs :n)bewvps /q b5+0boining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placedj2lt3rny 9 uj6bfea0 ye*7:zs at x = 0 and x = 0.20 m. What is the magnitude of the electric f s2z*:uelyr9jy3n t0fj7b a6e ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a s2m5gxr9)k0zu n4rp mi quare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find tui)4 pr2k 9mx z0gnm5rhe electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at yy , s3-yh)6h bvhj-wfq;bbk2the corners of the square as follows: +4.0 mC at (0, 0); kb 6w-h;h ),yf2 bsjhyqvb3-y+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 when it is placed in a uniform el 1fegdw(egwp;wns:q(312 f6h+ fek w hectric field;(gg3fps 6 1ffk2dehw w(q eew: +1hwn. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a m(p*k xhc hn9f5ass 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 plajhbn+d;,dqe: xntm,t+ l2h/q z(; gjr ced in an electric field of 6000 N/C pointing downward. What charge must be pmtjdl;xnt,, z g/ne q2br;( +h:q+ jhdlaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a o01(old0x0g.ay ldgexb x +) zcharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspegbxaz 00 +lo)xd0ldegxo .(1y nded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charggyi 8v8 mw6yl:wy8jx8/ 6wk sre of +2.0 mC. What is the magnitude of the electrik88w ys6m8gi/vrlx8 yw:y6w jc field 5.0 cm from the sphere's surface?

  A metal sphere of radius4 4k n-xyr qoqz:x7uk, 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the :u4zkrkx q4q7oy-x,ncenter of the sphere?