State the law of conse-xa9oamf n :0qv-,ysind;/ xkrvation of electric charge.

  Is it possible for two negative charges to attract each ot0 2p pemtg .obv/f+xb9her?

  Is it possible for a positive and a negative chapn binte4r5.n4./ ew .0b;tkyvj c) yxrge to attract each other?

  A glass rod is rubbed with a piece of silk. Des . s6rln9 ae mcl wfdzpk0-2oi8m,8u9x ib/8uring the process the glass rod acquires a pokmza2r/ ud8bimnl0,efcs e9-8x o86iw.ls p9sitive charge and the silk

  A proton carries a

  The model of the atom shog e9dcrp dqb0zn2ok+ac :jof2,*rq y*(u 4b3 hws a

  A neutral atom always hatr/ tx*vmxd+p3f *z+ss

  An atom has more electrons than protons. Thekzp**f tuassy 0+an,, atom is

  Materials in which the electrons are bound vh/l/w7(aaykh b4wq9 jery tightly to the nuclei are referred to asjhwa( q bwhky/4 l9/a7

  Materials in which thefa/uefq:,k va5yu )r k6v(:ak electrons are bound very loosely to the nuclei and can move about freely within the mater f:r ,fyqukv/)aa6e au 5v(k:kial are referred to as

  A negatively charged rod is brought near one end of an uncharged meta3s)mf x1c2tvvl bar. The end of the metal bar farthest from the charged rod will be cha)v fc mxv2s1t3rged

  Sphere A carries a net positive charf7y6w06xo nzn ;bvt7i ge, 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 statement is corr07vzw7y x;tn nfio 6b6ect?

  How can a negatively charged rod charge an electroscope positively? ycpj2g4 s o1nztw(/9k

  An originally neutral electroscope is briefly touched with a posi se5hmy)wf57w tively charged glass m7fyww )s5he5rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivel1s/kl2-y-j6 servwf2b7oe jlg 9 t bf4y charged glass rod is held near it. After the glass rod is removed,gy6 wkeobj b/l72e 21fjf94ss t-vl- r the electroscope

  A positive object touches a neutral electr8r: 0;hchtm,q 6 plzsnoscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaveshc0ls:8h tpzm6 r,qn;?

  A large negatively charged object is placed on an insulated bkb vhl.e3d9ua o wvf*g :w1/9table. A neutral metallic ball rolls straighwagwb/k1v93 9:.f olvu* d ehbt 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 -o1:h 7g w28oh9y8w djuiptie the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated b du 2zj) yohb7h0gvq1+y a distance d. The first charge is larger in magnitude than the sd g7hvu 0)bz2o+y1qhjecond charge.

  Sphere A carries a net charge ani 1gme z6wpa:5 u(oh.ld sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic fgw 5o p1ai.z6u(hle:morce between them?

  Two charged objects attract each othud +y.yg*c6k.b s 4,a,osbx/8 qhdtm ver with a certain force. If the charges on both objects are doubled with no changes+* uad.cb sy8/, ykx ,qh.dg6t 4omvb in separation, the force between them

  Two charges are separated by a distance d and eo*df 6u*zqu e1x2wixclg 2y;6eik ;vk 0bh4*uxert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, w*;k*21ufiux6 yg6;c 2ioe 0kz*hveuxdqlbw 4hat are the new mutual forces?

  Two charged objects attract each other with ah(5/wh7aa 6mbov 5vxy force F. What happens to the force between them if one charge is doubled, the other charge is tripl7av5ao5mv6w hxh /(byed, 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 hapu )d6y5nm,mu50ag vespens to the magnitude of the force on the proton if a second electron i mu ne5gy,60vm)su 5ads placed next to the first electron?

  An electron and a proton are separated by a distance of 1. q,mc2ieeec58s8x5lrn 5 k,ld 0 m. What happens to the magnitude of the force on the first electron if a second electrone5sl rdq kmcnex,2c 5l 85,e8i is placed next to the proton?

  An electron and a proton are separated by a distance of rt0m,nwq* zrsghm*. 0b* .zbj1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the *rz nrs*tgmz0 mb,*q.h jwb .0proton?

  A point charge of +Q is placed atqg3+f99 xjv rkt)o mf/ 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 cq93 orx kjg+vf mf/9t)orners 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 at the centroid of an equilateral triangle. Whi6 rtev/hw.bz5zd qx,24 x;pb en 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 w4.rzd evbb56/txp,zi x ;2qhof the other vertices?

  Which of the following is not a vec (y kcs6b .hi.ek)iqs3w. s.sjtor?

  At twice the distance fruhh e2k6 f vhf7umz: 0z9ch-/dom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between 3 dtq:y5-mr sra negative and positive char r t:mq-r3syd5ge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positi)f43di ox:( tq+va* ,bjxl4)andi fpvdh tp5+ ve charges along the line joining the two charq hi*l+xf vn 43vf :(xad,tjbdd)po 5t+ )p4iages?

  Electric field lines neut:hdzjsj 0/ 7bx764t3t xdpmar psitive point charges

  The electric field shbb1hhgws9b :c2 -j/bxn6kmt (own

  Can electric field linedmxy4/x gz/-g ;6l4as.zq rsnldri8t 8l7 jq +s intersect in free space?

  A solid block of metal in electrostatic 1cfkogx)ntqw /ky)ci)4zi-9 equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the bg)/y tcz9)q xn woi- kfki1c)4lock's interior.

  If a solid metal sphere and a hollow mku v8irk)6,,acwk sp s*33o gl nyng68etal sphere of equal diameters are each given the same charge, the electric field (E) midway bewn83 g*rigy8a,k6ou lkvsp, 6nck3s)tween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uncrn exu.-2b.fhsl061*nq gz p iform electric field is directed straight upward. What can be said concern.sg2eq061u c.z *hrpnfl bx-ning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric zr8o lfnkf )ood 7m gp*249m7hzae97j charge

  A positive point charge is enclosed in a hp5r77bh ndta)-txr2 f ollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollorhdtbf)5n-7 xt 2ar7p w sphere has

State three propertiesm9gz) ;jrad:m/4 mvoc of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron evbne18e7 *juis $e = -1.6 \times 10^{-19} \; C$. 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 more protonbvdtc f-l l fkpv5tao)67wt* ld57n/7s than electrons does this piece of plav57kt5d6v)t7l wntl caf /ld7* o- fbpstic have?

  What is the charge on 1 m qm7a hf3lg3jsn-s/+9o+k rg-takt4kg of protons?

  An atomic nucleus has a charge o2.sti (rhb3 bpf $+40e$. 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 2.9nq :j17m natkkx9-rz0 and -4.0 mC, respectively. What is the magnitude of the electric fo 79x a kkm-q9tnjz:n1rrce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th c.zin1dcvt,9em is 1.0 N. What is thevz c,. 91dtnci magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hem*xn9 *,(fd s5 yer yps)7 ggc8c*xauow far apart are they?

  The force between a *.b0 x-qvkfq:(rrp vm$30 \; mC$ 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 fb6//pvoq bru3g-e* d a jjjf13orce. If they are moveo/ -u rjbe*6qa1j3/jg fp d3vbd to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2uo)tw,+nd vx..0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm.v+wod, u) txn, 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 origin?

  Three point charges are placed on the x-axis. A charge ofx lgh()e:1 u,1e8ggqfobf1 ow +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC ohgegel1u fxg1qf1()b ow8,: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 +6.: qspex puhat the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is txq.eu :s+php6he magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a sgztdp1l :e/ 7x5 qesx+7-d;o3 pwjw ucquare, and a second point charge of -Q is placed at the upper-left corneqteelx7p/3ojwdcx7;g w :+p s-1u5z dr. 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.g 70f404ynn,eetsa;i t(wmqu 30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mags 4(7ne 0wemtqg,u;fi a0n4ytnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);.k y eor;24pioig/9vx i a(r:v Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on ti y;v ko/ .4 ragi:2p(vxor9iehe 5.0 nC charge?

  Three identical charges of 3.q 0tqoez ay23pov ,/c*0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. W eqzo/23cq*p0oa ,ytvhat is the magnitude of 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.9l1ln*uxtk v5 At what point, on a line between the two charges, would it be possible to place a9l tx1nv5kl* u charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the11zpxzt4ck v wm;r+x . origin and a +9.0-C charge is at x = 4.0 m. Where on 1zc; k1mzw.p4 xrtx+vthe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the a nunq5az,37(exwc x5 origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed sq wxacu 5x53ne(za n7,o that the force on it is zero?

  A copper penny has a ma(j1 g)j oapd 572gwfthss of 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 thf0b/e mqyjei,2pd /e4wy;a9 ue force of gravity by the attraction of a fixed proton some distance above it. How far above the electron0;,y4/yeb2um ie jp9qw eaf/d is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonogiv8eb8 v48al: v:olconducting threads which are 30o8:ve8 a v:i 8go4lvlb 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 +40xl 1; cj)sdpd4q,kuz +r/) zmne. What is the magnitude of the electric field xujsczp+;zdr )14nkmdl/, )qat a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5 j y86 9fztm+x*it4xdi0 m from a +f 9xz6yt8jm4ixdt*i50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chargenc1- f98l6n u10cl odya w8o m7kf6qdj. What is the magnitude of the electric field at the location of the test n lcco7uj 9fqd8f 1 1m6oly kw-dan086charge?

  A 5.0-C charge is 10 m from a small teyx0 bdzy v:on(e8zqg, -o5 6sr9-pzxvst charge. What is the direction of the electric fievn o9,(bz 5yer6 sxy:08dozx- vzp-qgld?

  A 5.0-C charge is 10 m from a small test ch sab q2qz/)o w a(:1td)dve.jharge. What is the magnitude of the forov(2e.szb)/wdqa a qhj:dt1)ce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eaay25orjf/s 5 ech have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiejy 5fr a/2soe5ld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a - 3u.ekxaq; 6yi4.0 mC charge is placed at the 50 cm mark. What is the eiq3k u;xa.y e6lectric 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. b286 /j8 zpp2qwxcqiv0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is pjbvxp8cq /6izw2q 28 the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.tg c((dfb 2hw,t ba bc:/x/*vg20 m. What i: *g gc ,(xt/d(bwtb/2ba vcfhs the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at pxskm e .z.p6w0 ;v5 qgcuji)3kapz/,the three corners of a square of side 0.50 m. The last corner is occ ,k wx/siua.v0 53gpjz e.c) pq6pz;mkupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0nb h.5ccg53 sz m on a side. Charges are placed at the corners of the square as follow3h5z.cb 5cg sns: +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 olk1 t-bs+-bdz xcut/1tx v(*x f 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thzx-s/+k1utb* bxdtl(cx1 v t -is electric field?

  A particle with a ch;ofdyf w:gjdje5k iu-1q1iu*ba d( 2q6fb-a+arge of 4.0 mC has a 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 electric field of 6000 p)l ,twk2um f,N/C pointing downward. What charge must be placed on the ball for it to be su,w),fkm 2 ltpuspended?

  A foam ball of mass 0.150 g carries a charge of -2.0l-z o3rc oy28l+v) b n f;dijrkxo8s1,0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude+8n8k z1 ficx-v 2obo r3 sl,;)joldry and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge opmf ngx.0l ,o)f +2.0 mC. What is the magnitude of the electr0 fxg,.m pno)lic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargh09 c9gjn 5ytqrfnw*0e of 3.0 mC. What is the electric field 6.0 cm from the center of ynf 0n9 5qcj*rtwgh90the sphere?