State the law of conservatiq j5nkc+i u:bdxg k(*f-+b7l zr 39wywon of electric charge.

  Is it possible for two negative charges to attract each otherxnym,r xb(, ,u?

  Is it possible for a positive and a negative charge to attract e-adhga.uu0lr2 0vra2hce o),9h .a77s zmrhfach other?

  A glass rod is rubbed with a piece of silk. Du k-rrh7, ewq8tring the process the glass rod acquires a positive charge anr87k thqw, -red the silk

  A proton carries a

  The model of the atom sho58.a v6i cv914bqhgz4v mxkfiws a

  A neutral atom always h6 lm9dtjv9 sw8as

  An atom has more electrons thanyoieuo9 c6:2t+a 7ajw protons. The atom is

  Materials in which the electrons are bound very tight *ldce ;cd5)i.5vr js cp915ps7rymws ly to the nuclei are referred to a*5 c.l) wem9isdvyrc 5j csrsp1;7p5 ds

  Materials in which the eft. 16czag (z1ov y9dclectrons are bound very loosely to the nuclei and can move about freely withiz(gf tvc 11adzcy9o.6 n the material are referred to as

  A negatively charged rod is brought near onepghlo 6j 1sgmiem24:; ,(pfi m end of an uncharged metal bar. The end of the mspl:2( h gom6 jmmg;ifpi4, e1etal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere )c jw v szq:sx5:drnev kr4+:1B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundedwj:n 5s)+: v v1:eq4dxc zskrr. Which statement is correct?

  How can a negatively chargaz66mvp4/w/p b9t wg5 f6o xored rod charge an electroscope positively?

  An originally neutral electroscopf0q vl9h7set z;d7ho 3 4qi9tme is briefly touched with a positively charged glass rod. Th q7zs7hhd4fo;3iettq99lm 0ve electroscope

  An originally neutral electroscope is grounded briefly7k9u wr g01tz*o*zt d18yycul while a positively charged glass rod is held near it. After the glass rod is removed, the electro0* ogtu9tw8kcry z7 d u*yzl11scope

  A positive object touches a neutral electroscope, and the l+v;q w:vhyajc6bgax*,su l l 6x)n +)beaves separate. Then a negative objxbayv:*cbq) v,j)agsl w6n x ul ;h6++ect is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargedlf9l/2o b q1r x/my7we 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 touch the negative object.e y9lmwo2/1 xqrb/7fl 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 conwpl cwzsro d ctc)y81l9 w(2,7stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lal0p ze li .pxk3+z: j14f/yrnorger in maflex 4zno :l01 y pkij3r+./pzgnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. l c; drdvz c-74x*iy;hThey are placed near each other on an insulated table. Which statement best describes the electrostatic force betwee-ivddh4cc* l;yr7 z ;xn them?

  Two charged objects attract each other with a certain force. If the c.z2)zqck mj/yharges on both objects are doubled with no change in separation, tm. yzq /zcjk)2he force between them

  Two charges are sepap+mi)z 4y cd8wrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutua8pwdz i+c)ym 4l forces?

  Two charged objects attract each other with a fpd0 5bj9fnp(kwy c28 borce F. What happens to the force bet(wb8 jdpk pcbfy29n05ween 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 equal to

  An electron and a proton are separated by a distance of 1.0 m. What happp dk+i4spd 8v,ens to the magnitude of the force on the proton if a second electron is placed ne4dvi d+8 sk,ppxt to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W,k1+o p klvq+h37jmk qhat happens to the magnitude+ j, 7 1kk3hqlkmp+voq 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 1.0 m. What happy k7k-( jdww.dpp 0o(: th8vpsens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton? : .(jw-w0ts p(dhvdkkpoyp78

  A point charge of +Q is placed at the cenh t)v.st njh4w5z zcc f8ompi1(;9 8qfter 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 of the net electrostatic force acting on the positive charge at the c1;w f5 q4h98z.(nfos tvtjzmchc8p i )enter of the square?

  A point charge of +Q is placed at the centroid of an equilateral s;emn -0un3aw 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 magnitude of the force tha an-mw;sen0u3t acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is*.ksv16szw cor hb,oy- ck :n/. ;cozs not a vector?

  At twice the distance from a point iv.ar1q y1hob 50hlpl :4kr;rcharge, the strength of the electric field

  Is it possible to have a zero electric j rx/eam)m .zrf tmibn1a/+)kl. q/( f*doj4m field value between a negative and positive charge along the line joini ma*/ fkd)ex/ iz. m+r btf )amjml4jq1o(/n.rng the two charges?

  Is it possible to have a zero electric field value between two positive cfg+u1v*slyazn4ta wuqs0 0+ 7harges +a* 4slu fsuz+qv y0 a17w0ntgalong the line joining the two charges?

  Electric field lines near psitive point charge32a9ubs u :/lbrmce5i s

  The electric field shokwjw gv3od +a;u 2:7wvwn

  Can electric field lines int-mw0ntr(opv j)oc vun 6 /d0:gersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a8+ dgm3rajpc 2 uniform electric field. Give a statement concerninpc 2g83armdj+ g the electric field in the block's interior.

  If a solid metal sphere andeh73 7pmipeqar 3u. /y5h0c ge a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the e cha 3ygp 0.qp/7hem7rue 53icenter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unizg/g8h(w l7/bz; ja, 2 iwgzhxform electric field is directed straight upward. What can be said concerning 2(a/g bw,gw l;jz8 hz/7gxihzthe charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charvy8yx oni3ysg ujyixbj c )1+.1qt)24ge

  A positive point charge is encloh*irw c1 kuqlyl):zdxi 8 i7,*sed in a hollow metallic sphere that is grounded. As compared to the czic,lwqid)* rhx7l*ik 8:uy 1ase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors+c( otlhgy.*c in static equilibrium.

State Gauss's law.

  The charge carried by one e i+ hy85xyl+sxlectron 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 mo*4 -utydoz zh4re protons than electrons does this piece ofz4 z*utohy 4-d plastic have?

  What is the charge on 1 kg of 8gxp5 2oh0xh)s sbtm 5protons?

  An atomic nucleus has a charge ois1*urt;c u wv ro)vdjzd;((r yyb*((f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cytbp; fx zam;nr+ -;t/m, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the;bxf+ ;nmy ; ratzp-/t electric force between them?

  A 1.0-C charge is 15 m from a secode qs60(5fib 5vqnc0e -c0xelnd charge, and the force between them is 1.0 N. What is the ml5c 5exvid0ef bqq e60cn0(- sagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How farg zkh93+ zg,f0gzvb 0s apart are they?

  The force between a 5c7-a9 u g wkj71fbgotvrm48rlm o (x-$30 \; mC$ 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 forc1l)y qnwxnjew1 l6ic y8i/)jk7 1b1aze. If they are moved to a new separation of 8.0 cm, what is the electric forcecx/kj 1 ji7ew8yy 1)zlwb 61aq )1nlin between them?

  Three identical point charges of 2.0 mC are placed on wh( :r,.+nmeb+qbbp w 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 directiow+w,.qnbbr + e(hbm:p n 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 4ij ,w3tqxw8,ctug7 r placed 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 andjq ,4tci8uww73r,t xg direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are l k,djlh aor2 h73w;g0se x)pd,ocated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC a;k j,hsre7 x,dpld0oawh2 g3)t 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 square, and a second point chg 9*gnyo)ww c6arge 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 a9g*n6cw gwy)octs 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 ze k1 qb)l9o/g= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of tz)e9b 1gl/kq ohe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)9 f;gjx 0)soel; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What 0;olfxe9)gjs is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of annxrd9p*; yee w,.h8ay equilateral triangle whic p, r. ya8hn;ew*dx9eyh 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 separate3,dondh2 pqlaas5+ mgtg+ u7+d by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forc7qaud352+ msdp+ +ao gtln,hge acting on it would be zero?

  A +3.0-C charge is at the ombx600tpgf jj jze. 69rigin and a +9.0-C charge is at x = 4.0 m. Where on the xjb0e.9jpgtjx 06 6fmz-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the; w f39d.wylap origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plpw.a9;ly3 fdwaced so that the force on it is zero?

  A copper penny has a mass of d,f3v2: oab+lsme l a0mzj(j8 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 gravity by the attractionr4my(apdir 4i+(2nddkk 6 g2g of a fixed proton some distance above it. H4adkg(dg4ny pir2m i(d+ k62row far above the electron is the proton?

  Two 0.20-g metal spheres are hung/mzzd. +w*f 2 ebs2ei1(5/tl3 bc gtptj)tati from a common point by nonconducting threads which ar 3 2 2bt*gifel )/etz(tzm.at5ct+d pi1 w/sbje 30 cm long. Both are given identical charges, and the electrostatic repulsion forces 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 +40.gwww ulv 3i86zn l-6pe. What is the magnitude of the electric field at a distance of 1.0 m from twg 3wzwl-l 6u pn6i.8vhe nucleus?

  What are the magnitude and direction of the electric field ats i wr8fp:c+b 9jd:h)h a distance of 1.50 m from +h:wb9i cs:p)hr jd 8fa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wlw6.2oa ilc r.c)wi 1ehat is the magnitude of the electric field at the)w.r i.lc1 26ioalce w location of the test charge?

  A 5.0-C charge is 10 m from)1a goyg4s(v;e ars7 m a small test charge. What is the direction of the electric fimsa r(ea)g;v y1os74geld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofb14y e6 djncmpf7o8l0 the force experienced by a 1.0 nC charge placede l6yn4j0cpdf187 bo m at the location of the test charge?

  Two point charges each spurb7 46pr9 w9th3 ji ileq/3have 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 between the two charg u l9r63 79ri/pbhsqt4 3jpweies?

  A 5.0-mC charge is placed at the 0 cm mark of a me /u4( eq, xxcjot/sfv.ter stick and a -4.0 mC charge is placed xse/q. cvt/ ,4(fouxjat 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 -4.0 mC chan1r8bz 14fbx srge isbsnxb 18zr4f 1 placed 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 ) hhwqdp.pu 2f+k:z3smC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poisf3k+. :uh zdp2hp) wqnt midway between them?

  Three 3.0 mC charges are at th jc.6tdh7q,ui e 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 thj. ,q76 thcuide square.

  Consider a square which is 1.0 m on a side. Charges are o z//d, t 88ebdkti6xxplaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC atdxb tex,/8ot /zd8ki6 (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 cy-21xqp9ynf9r xi(sj harge of 5.0 mC when it is placed in a uniform electric field. Whafsp(9iqn 2 1-yx9ryxjt is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass vmyyz 1n0z.. r(qc ii*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 ele-90fl; wlv48t1seluxz 4g/ u t5ez ofrctric field of 6000 N/C pointing downward. What charge must be pglfz/wu o5;4x9s0ztlue t8f4 e -lv1rlaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chzamhu8. (o: wsarge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magzus : a8mhw.o(nitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +8 h gzt8hbcv l3lp:,lo6o13c u2.0 mC. What is the magnitude of lllu6z hc3 ,o:8 b1ohp38tgcvthe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charg 9/zwqq+* pup)w xwh-5fu.eble of 3.0 mC. What is the electric field 6.0 cm from the cu h.x/pqqe w-w )zfwbu*l9 p+5enter of the sphere?