State the law of conservation of electric char5 g(/t fxnl;1+khfpkv ge.

  Is it possible for t6wnt5jr 5zk/two negative charges to attract each other?

  Is it possible for a positive and a negative chsp- h 2it 2y),2x( fi7fwdh0wj. q5beyp vyp7aarge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pr vmh 41 ods;j9)fp6-8 gnq.nns0difmvocess the glass rod acquires a positive-ndnhf4m jfi mvq)80.;dgv1s6so n p9 charge and the silk

  A proton carries a

  The model of the atom shoejwtl.*+f:-(qc-l 1 l zwuzaiws a

  A neutral atom always haseabng 0*utdun29 jj xr(v+*3k

  An atom has more electrons than protons. The b 1rhike5-i6cy/vgw3cz q*b:atom is

  Materials in which the electrons are bound verf j.gkz-f-p dow3bu6+ y tightly to the nuclei are referredw.jd+zffko63u -p b g- to as

  Materials in which thms bco xe4 z5* h4i9y-n1tu5cge electrons are bound very loosely to the nuclei and can move mi c s91zox yub-e*445c th5gnabout freely within the material are referred to as

  A negatively charged rod is brought nep/acma70v 6rkutb )i5u 5 9wxbar one end of an uncharged metal bar. The end of the metal bar6t5 amibr w5 0puv97ubc)x/k a farthest from the charged rod will be charged

  Sphere A carries a net positive chazoq )f4c/kip**; dra6lb x mr6rge, 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. Whi*d oxzfk li*p ab6;m4r/qr6 )cch statement is correct?

  How can a negatively charged rodk:d rpu+(st2y .qazva 0+ s;lr charge an electroscope positively?

  An originally neutral elecpj(mtz1b;wvn. r01g p troscope is briefly touched with a positively charged glass rod(pn;trw.z g v101bpmj. The electroscope

  An originally neutral electr3vmy1 ai l1p*woscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removedli31wa1 vym *p, the electroscope

  A positive object touches a neutral electroscokhuvqpc,; 7, jpe, and the leaves separate. Then a negative object is brought near the electroscope, but does not to; pc,v q,u7hkjuch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrtkiau40evnn* j 12 vnc 80xq+ral metallic ball rolls straighta x 2jnevn1 4+ r0v*8nqu0tkic 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 ball?

  Charge is

  What are the units of the Coulomb c4c0 x8 ksy:kc i-pqlm9onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fl1 pu7x5is +miirst charge is larger in magi1p57ius m+ xlnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea, fmq9.o qad5wa 0/kkxr each other on an insulated table. Which statement best describes the electrostatic force bemkf0,d9.a5q qkw x o/atween them?

  Two charged objects attract each other with aa,xd 7 mgcr:i+ certain force. If the charges on both objects are doubled with no change in separation, the igcd,ra:+7m xforce between them

  Two charges are separate 0lr7kd wox. hftm)k1)d 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 mutual fokk0hrd.1) xlt) fo7 wmrces?

  Two charged objects attract each other with a force F. What haprpk28 a+rj sf7pens 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 originaa8rrs 2 f+kpj7l value? The force is now equal to

  An electron and a proton are separated by aj3a ;x nsq9 -b*t(q mw5znbdh/ distance of 1.0 m. What happens to the magnitude of the force on the proton s 9naxq *;(b5-mj/hdqzt bn3w if a second electron is placed next to the first electron?

  An electron and a proto5evceoh2l48 d vzft4, n are separated by a distance of 1.0 m. What happens to the magnitude of the for5t,e 2d feh8o4lcv4vzce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepk8ud pj(-f t,lz)vf+larated by a distance of 1.0 m. What happens to the size of the force on the proton ) f+ 8fjd ltpzk,v(lu-if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c5syd+v2o u 9jrenter 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 placedu+j2dv 9orsy5 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 23l 9y 8tlvozzat the centroid of an equilateral 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 that acts on the center charge due to a third charge of +Q placed at one of the otzz2 v3lyt8o9lher vertices?

  Which of the following is not a veyj4sg zc+ x5(nesi;6ictor?

  At twice the distancw omm kr7kh ju5u qe.tr52l--;e from a point charge, the strength of the electric field

  Is it possible to have a zero electric fiv:gp d k j9i e;gih81tjaj8(on2lt(*ield value between a negative and positive charge alo;o8 gav(:ig12*lt jjtek ip8d 9j nih(ng the line joining the two charges?

  Is it possible to have a zero electric field val,m8wog63f t0vzxa- alue between two positive charges along the line joining thex l0t8wfa36 ao ,g-mvz two charges?

  Electric field lines near psitive point wc)fd,jm8+5*lm(qp y ay4o xfcharges

  The electric field sho* 1x1dlj zg3owwlz5g/wn

  Can electric field lines ine4j6c b(utnfe6y+73dk1 tb iu tersect in free space?

  A solid block of metal in electrostat )i)h e-ggg4erzup jb1377h jmic equilibrium is placed in a uniform electric field. Give a z hm)-er7)g41bu j7pegji h3g statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of emm:cns+sdol k1 g.s:vu3*ijfw )px) 2qual diameters are each given the same charge, the electric field (E) vl*oin2sx:cj m1 ):s w+3u)k dg. fmpsmidway between the center and the surface is

  A cubic block of aluminum rests ona3 ksj z7-ocs3 a wooden table in a region where a uniform electric field is directed strscj- oska z733aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elec r h1itm4epa53j46s ystrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic swuffo0sguffr -8x +-0phere that is grounded. As compared to the case without the hollow sphereuo-fxf800 guwf -sf r+, the electric field at a point directly above the hollow sphere has

State three properties of wu xtk:a(w ,f6conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron r/j8 .rjhphj7 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 manyuzo/adc8za 4a uz+ uc.1fu-/:a ktc, z more protons than electrons does cuuua,/az4 z 1ou/dc f-. zt+ca8zak:this piece of plastic have?

  What is the charge onm5*h.up0 ai1 1 hugvnc 1 kg of protons?

  An atomic nucleus has a charge o 0s 8 1lnzn7.9hdhx1b zljj;rvf $+40e$. 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 2.0 and -4.0 mC, lto ;jbp8:(ry respectively. What is t: p t8yl;rjbo(he magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force b0psp1s3b yw v*o2 s;ywetween them is 1.0 N. What ispsw2 1vsyb3ws ;po*y0 the magnitude of the second charge?

  Two 1.0-C charges have ,d j,q4xv6e8*l ay1f rykksk o gi,c:*a force between them of 1.0 N. How far apart are they?

  The force between a u5v lwh 97r83*c12aqb2uyp dv9 geggc$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apwhkcs/hse,wrs01t 8 2::sxta art, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what ic w8 a,e1s2:hrwtks tx:0h/s ss the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis+a/4vjatgmlxz/7o l d v/, qy,. 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 electrostat/x4va+/dl, m/gyz, laovt7 qj ic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. lw 7swh7tgn,si 9-6c uA charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4. 7sw9tlsiw7c gu6-n h,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 6ua14aed2 jzrbo + .gylocated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 ugbajy+a6d 1. oe4zr2 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 square, and a second pun da0s,evgk(3 2 +8tjg: pipvoint charge of -Q is placed i2,t+v0p dn:g upgs 3vj(ke a8at 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); Q0 d1r)7.uvzk.:mgfr p xlpuf ;2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thef )fxd gpm70..z: lkuu1rpv r; 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); Q3 = 5.0 nC is //iyy9yig s5l9i ed 1vat (0, 0). What is the direction of the net forcevyy1iigls5 9/d/9yie on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterapth8-clyj/ 2:pt3 ddy l triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force / 8jyyp tdtlcp :dh2-3which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separt .k i4h+*-o8 vczewtqated by 3.0 m. At what point, on a linetzthoiv*k4 +8 ecqw -. 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 the origin and a +9.0-C charge is at 6(n +zuqznf raal5k1 5+kj8dsx = 4.0 m. Where on the x-axis can a third charge be placed so thkr8qd 1+nazu+ zfjn kls 65(a5e net force on it is zero?

  Charge +2q is placed at the origin and charge -q-4j2r0ql q lnu is placed at x = 2a. Where can a third pos 20lrljqnu4- qitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 gvehi5. il ft q)*h+;fl. 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 di+v-aluq 3- w26couhby the attraction of a fixed proton some distance above it. How far above the uq-2-o ui vc6 hd+l3awelectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thxhyxgd ;4*cwi /(osc s.1o2kr8g5 bjn/dsq: lreads which are 30 cm long. Boths 8/1 syd;(b*olhk :ws4ojxr2xgqcc /gi .n5d 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 of the electriclun (jjh:z4p 3 field at a distance of 3h nj (zu4pj:l1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5 cpy56w) xh0gt0 m fro0th)py c 5gx6wm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. -;o6vjyxzcg; What is the magnitude of the electric field at the location of the tes-zj;vg6x y;c ot charge?

  A 5.0-C charge is 10 m from a small test cg l s:wg/kfr3jl+ 4xoqx;k:x1 harge. What is the direction of the eleoxfrxgskg 4+qkll/j3;w: :x1ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of w1b9lr5 za, tddu1 h 9kb*q,wbthe force experienced by a 1.0 nC charge plz ,*a 1h 91bbu9w5kwd b,rdltqaced at the location of the test charge?

  Two point charges each have a value of 3r zd)to*tm0 w-.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chtotzr*wd0 )m- arges?

  A 5.0-mC charge is placed at the 0 fq/lrx* fm8 )mcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at themmr8q)f x*l /f 30 cm mark?

  A 5.0-mC charge is placedzo yokqa-/icv8w );o4/36b 2ivzcphz at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on aovv cko z 3q)8 c;-z/payz4wi/i6bh o2 line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at 43z0k k/yem hm py:oohp *ce8;x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point3;mpkzko epmh:c o4/hyy80e * midway between them?

  Three 3.0 mC charges are at the three corners of a shih)8v0vs fgvm4u1g/ e,* tp l0ads1square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fafsvd*i /tvg g h)s1 s4m0v180ulh ep,ield at the center of the square.

  Consider a square which is 1.0 m on a a(o0k 5/f 9rrf q(pmxwside. 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 the magnitude of the electm( x (wap90q/rffok5rric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is plac yq3mh g )zns2cb8hv04ed in a uniform electric field. What is the magnitq34h vhszcm2)b 0 8yngude of this electric field?

  A particle with a charge of 4.0 mC has a mass ozo.h lx s.*wso2pk77 mf $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g itcg5r1 nimzh n. *:k3ps placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to bez p rmn5*hnc t1k3i.:g suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is phc9,i dd sdv6 1g*c xt,0wf+owlaced inside a unicgdto,sd6 i+w c f,v1*09hw dxform electric 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 charge of +2.0 mC. What is :mt uz;0jec , gu0ej9ethe magnitude of the electric fie00u:j9, cmee u jzetg;ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eledpq 1fxycp 6y4: 6 9mw0dsy2ovctri smq1:pcddfyv966yy 24 w0o pxc field 6.0 cm from the center of the sphere?