State the law of conservation of electric chare lmu/s-+f:*yx ha6page.

  Is it possible for two negative cha laoc0x ehw)3ok ;5mp;m 8g)-cel/xd mrges to attract each other?

  Is it possible for a positive and a negative charge eni/t8l+xx t4 xaw28h to attract each other?

  A glass rod is rubbed with a piece of silk. During the processfr;x/+krz0ze the glass rod acquires a positive charge and the fzr0k/+; zre xsilk

  A proton carries a

  The model of the atom sho+bhkc) nz) ky+ws a

  A neutral atom always has viwuce7;aro+ j7/q6 l

  An atom has more electrons than protons. Ts yb-;,f0lcwd 1vt mr7he atom is

  Materials in which the electrons are bound very tightly to the nucleio94hqxcr1qjn. x2 d7mx0w) s s are referred tox2) 0x qx4q19cjrwsd .7n hsmo as

  Materials in which the electrons are bound very loosely to raxgq+) .mx 9dthe nuclei and can move about freely x.rdaq xm g+9)within the material are referred to as

  A negatively charged rod is brought near one end of an unc. 5d gyqk4d3avharged metal bar. The end of the metal bk.g d5q3a4yd var farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B wo/ kb4kd(g8 ois 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 correk ogodb84(k/wct?

  How can a negatively charged rod charge an electro am-+oyp dsfx e5u.j27scope positively?

  An originally neutral electroscope is briefly touched wit5*qv83;k.ddkmf-v dlss 1rp g h a positively charged glass rod. The elecd8gm 1sl ;3qkv-*k.sr5pfddv troscope

  An originally neutral electroscope is grounded briefly while a positively ch j-om3 c0faoj,d .i7vkarged glass rod is held near it. After the glass rod is remov3-a,0mokdfoc .jij7 ved, the electroscope

  A positive object touches a neutral electroli w3b*w*42 k01an,lgn u hgydscope, and the leaves separate. Then a negative obje hg3u2 0g 1ldwy ikbn**nlw4a,ct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged owm/jw7o6wyp -bject 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. At no time does either ball touch the negative object. What is the final charge on each ba/ -7y6pwjwwmo ll?

  Charge is

  What are the units of the dip t5ol5fw 6m n8ts7tc fu09;Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. xz 0q,)qqtr v07wx(md The first charge is larger in magnitudxx qd(0r7,v t)0qqmzwe than the second charge.

  Sphere A carries a net charge and sphere w n2f)icdon9 c:d9g5m B is neutral. They are placed near each other on an insulated table. Which statem:din9og5wnf)c mc 29d ent best describes the electrostatic force between them?

  Two charged objects attract)no ez*2ut*m u each other with a certain force. If the charges on both objects are doubled with no change in separation, tz em*ou)n2u *the force between them

  Two charges are separated by a d vi.5qn23*vbfk +q.jwofl k mv8aic uwx3+2r5 istance d and exert mutual attractive forces of F on each other. Iiwb +i52af 2of8 3v.k.x *ruc3ql5kmj+w nvqv f the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happefy*f qh- qp5ib cz)(;bhpux kr9m(xdw ;-ak ,/ns to the force between them if one charge is doubled, the othu h pr)d a*f- f5pxyxb-(9 /;kbcikmhqzw;,(qer 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 happens :-k)w2/u.6mqk mu lpqt1eas j to the magnitude of the force on the protwqje. -k)6mu tpmk2u/q asl:1on if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m.tin 9s4 .9xzr vba3r7e What happens to the43nab9v iz tx9sre7.r magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton ar+qlo0(sb7i:u7 n(ajc wmb5sb .rm/ nne 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 closerqb7nbsnw+ s: il n(cajo0 rb5m(m7u/. to the proton?

  A point charge of +Q iszv( no4g2.zki 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 of the net electrostatic (2kz4oz.nivg force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral trianglevk jrj-xi) a::. 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 thari-: jx) vjk:at acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following iswq*f06o yd,7jmgkfw ,g f*v7i,xns1c not a vector?

  At twice the distance from a point charge, the strw6+ b5oqte- uqength of the electric field

  Is it possible to have a/jvnlub(j 6r+ zero electric field value between a negative and positive cvu/(blj6 +njrharge along the line joining the two charges?

  Is it possible to have a zero electric field value betweetl/u; 81k our .id/mpwn two positive charges along the line joini;rkmt u d18/w u./oiplng the two charges?

  Electric field lines near psitive po9a rhssvbn7 5*int charges

  The electric field shownqh dt-f , s7hdt-ngnve 7(h4s+

  Can electric field lines intersect in free sparwd50f-s 7 nsace?

  A solid block of metal in electrostatic equilibrium is placed in a uniformx8h ze8 cv.thw2 (nkn;wzy13rbn:,v a electric field. Give a stz;hab y(nhrwn,v38nt wv8k x1.c :2ez atement concerning the electric field in the block's interior.

  If a solid metal spher lw :cr8ug-v8fos xb83e and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between flv:8bs3 8g-rxc 8uw othe center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where vo1qjef8cpejly,acvz . v; 3x0e/h +* a uniform electric field is directed straight upwar3qcec *+ x81;, 0ejvh.fpevvoy/azjld. What can be said concerning the charge on the block's top surface?

  If a conductor is in elee4qnu+qi:ais)b 9x d .ctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a d i1w8xdik1pd59j)buo1 +vno5:b j wk)c8x mchollow metallic sphere that is grounded. As compared:jcu 1jw5 8dbxi9kd+)v )5 p1owdkx81cbiomn to 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 dw2v + m6hcj:x*bqhj*equilibrium.

State Gauss's law.

  The charge carried by one e2sa)yaequ)zi /6pl 4electron 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. Hxti6 6)icw+ em52 gbe-hn ibl7ow many more protons than electro-hb i+lw5 ic emg6neixt76 b2)ns does this piece of plastic have?

  What is the charge on 1 kg of pro pgc6os+ nz6q2z d7q2gtons?

  An atomic nucleus has a cu vfwjw0p8blz79c6m xz n:5j.harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated b6yzmj: 6,ei6z. bil ncy 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themec zl:.j6i,6i mbn zy6?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 17uqjrx 0p7p/f.0 N. What is the magnitude of the second chargrxfu7 p70/pq je?

  Two 1.0-C charges have a fft/*9izv-wcj -b9 uba orce between them of 1.0 N. How far apart are they?

  The force between a ysz v5e06pvv)$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap. apf10rt 1nfcart, experience a 1.0-N force. If they are moved to a new separation fa 0tcfp.1rn1of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on kq olqh30i/2h 3lkc.qw;,aslthe 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 at the s.330qkhw2iqll c ,hkql a;/oorigin?

  Three point charges are placed on the x-yk;rks*y6 lnj;i)0i f cvem;.axis. A charge of +2.0 mC is placed at the origin, -2.0 m k;e0i s c.k6i ;ymr);v yn*ljfC 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 origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x eo *o*rcqd 7rwb.hu4fc9 l78siw5eq-pq 5lw)= 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the forclr*e 5 cc-slq 5.ierwq4 wwofp)7ohdqbu8 97*e on the 3.00-mC charge?

  A point charge of +Q isz0giwd. 9+qvn+da; yw0vu7kt 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 z++;agvwd.tuikv dn0 w70y q9that 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); Q30 v lzu4kjht ) )/;5spdij5 kvwvku9t2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the v4)/sk h u ;vtjd05 lk95piwjtku3v )zmagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, qs;f1him+o9ss*f t9z 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, smth+ioz9q*; 1s 9fsf0). What is the direction of the net force on the 5.0 nC charge?

  Three identical chargesvt 3+e)dmm4 br7oht, iml0 4bttuo0n 9 of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the ele0bmmim4 70b4)9r+ o,d 3tultonthtvectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. wgdhai. pc -: m*imb;)j0qps 5At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forh p):d5i-wbpisc* mjmq a0.;g ce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whe+0mtgl;xq t(a 0qmb nv w+, uvavyc31(re on the x-axis can a third charge be placed so y+;lav0 vcxq g 3mt,mb(1w(tvaq0nu+the net force on it is zero?

  Charge +2q is placed at the origin andte v6+uth.m b: charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force onmb.vte+t h u6: it is zero?

  A copper penny has a mass of 3.0 g. Alq1irw1c80 9q(rkm3l c 7*hqwcl y4 do 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 thfv uyvppaulx 1t.0 q5 *y2mm.,e force of gravity by the attraction of a fixed proton some distance above it. How far above the elec.a 1y5 fp0 tvuvq.,yux2mmlp* tron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducp+r9loxg/6eo ting threads which are 3opo/ rx6+e lg90 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 +40e. What is the magnitude ni5vdbd7jpho8xtkb- 0ex/7+ of the electric field at j7dt7h pv5b+ki8b 0dne xx /o-a distance of 1.0 m from the nucleus?

  What are the magnituda1i shgsf7pj 0c/uo: ee;p*3me and direction of the electric field at a distance of 1.50 m cs mo7f ip ;ae01u 3/sgejp*:hfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m fejs cwmybu:,24 6n5iqrom a small test charge. What is the magnitude of the electri5q unm sey,:2wc46bijc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of3o e4h v-q.r-h-kxvp s p gfxz-ru0r8/ the elecu hp04 s-r8g3rr zxk.fpq - vex/--ohvtric field?

  A 5.0-C charge is 10cmuf:-4xatn/) hu; c -g47otxhwp ol 6 m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locam-ouptwnluxhh: / 4;4tc 7aoxc- )6fgtion of the test charge?

  Two point charges each have a 8) 41 jkszf evyhn7o)wvalue of 3.0 C and are separated by a distance of 4.0 m. What is the electricv)jhes 1n z 4yw7o)k8f field at a point midway between the two charges?

  A 5.0-mC charge is placed a:.wd-*qu )pd8rxmh1 xrwr lz8t the 0 cm mark of a meter stick and a -4.0 mC charge is hx8d1qrd u *.z l:x-w8)mwpr rplaced 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 cm mark of a meter stick and a-re 9cf0et-srtf7u w+ -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elec rcrt+ u0ff-79w-ee sttric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pyf)lm(kqr/pd7,i 7,yg63dhkiq t2 d0ffv * v klaced at x = 0 and x = 0.20 m. What is the magnitude of the electric2r6q,y,/fklh7dpf i d)yktfgimq0 v7kd *(3v field at the point midway between them?

  Three 3.0 mC chargesw3ugsahn/ b 7-f*rof * are 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 f3urf 7nash-b/ *wg*ofield at the center of the square.

  Consider a square which is : .mrhi iz sx: .p-oc:kcvn+7j1.0 m on a side. Charges are placed at the corners 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 t :ks7 i+ji:-p. hvcznm:.cox rhe 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 e :w; l2l(h-hbzv pdf-alectric fi :-;2abllhzd- (hpvfw eld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has ag n+:gdb;z 1h 1vgbol*7 d-dfk 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 electricmxc8c ) : gtr+dv4;or+x c+svs field of 6000 N/C pointitr )s4 cvv cd:o+;m+g+rcxxs8ng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.7 7rc0j, opnem00 nC. The ball is placed inside a uniform el,pm jr noe077cectric 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 carrieqsf:g d8s;66.j;p bz gnxej u;s a charge of +2.0 mC. What is the magnitude of the electric fiesp gn .68q;jf z6bj:;u d;gesxld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cp,oe58k9k fkx m carries a charge of 3.0 mC. What is the electric field 6.0 cm from the p5fk8,kxk o 9ecenter of the sphere?