State the law of conservation of electri2qhegd hpi*zva;y (6v ) ,p1ltj.1tbvc charge.

  Is it possible for two negath-ivyrr: xfmka8 ,4i ,d3j- jbive charges to attract each other?

  Is it possible for a p)k)agar/c ah8 -2s bdjositive and a negative charge to attract each other?

  A glass rod is rubbed with q:nauelz kq ku2-tihys;4 ;51 a piece of silk. During the process the glass rod acquires a u ;elkuszy-:14a2hq5 k qnti; positive charge and the silk

  A proton carries a

  The model of the atom shows lcrrul34yi2*m ,hi)nbuiq 32 obye 3/a

  A neutral atom always( bzzo b3sj79 w1rv;d+0l z2(umzeg mn has

  An atom has more electrons t;6q;e)d+yi ci* i i -dpjz8vbehan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rbiwr,r l .,ca-ipbm7 - yb k:cw/z9h2weferre-9rz/.7c lb rwipym b-ckw,a:,2hibwd to as

  Materials in which the electrons are bound ven,o+zwmv t u)7ry loosely to the nuclei and can move about freely within the materianzo)uv7 t, w+ml are referred to as

  A negatively charged rod is brought near one end :*ai p 3jey3 d)gap(m-ru9oqhof an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargedjoyhm a9:rg( e3 p pa)di3*u-q

  Sphere A carries a net positive charge, and sphere B is neu;: m:obxwj1l8sz t m -c9ky: pvmp),lgtral. They are placed near each other on an insulated table. Sphere B is briefl:9,yp: - jwt m1 cslv)b8;l kgopzxm:my touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope re*k jl)e/( 09rsd *r-owbu:;rycv w fpositively?

  An originally neutral electroscope is briefly touched witx,aj 7urzhk1z0 6x6 xkh a positively charged gzh7jka,6xx 0r zkxu 61lass rod. The electroscope

  An originally neutral electroscope is grounded briefly whh vfv-h*,-i paile a positively charged glass rod is held near it. After the glasfhv vhip-- ,a*s rod is removed, the electroscope

  A positive object touches a neutral electroscope, qqv 92ijvhzx/;;9c in and the leaves separate. Then a negative object is brought neaj9;hxq2vvic 9/n;zqi r the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neod khwq0+wrlm 14a 0wf5;rk 7zutral 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;4r0 ak507whwofkd w+lzmq r1 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 constanf) qg20ok3it jt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distax;.qdd 4xrypl00bx:mnce d. The first charge is larger in magnitude than the second chay4 .mpd:;qlx00bd xrxrge.

  Sphere A carries a net charge and sphere B is neutral. Theygrq9w3qzi1 1c are placed near each other on an insulated table. Which statem31igwq1qz9r c ent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If t mdlo0i8ywy-9 +njht;he charges on both objects are +h-mn;dj tl8y9 owi0ydoubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive force+iy0 2p)4xn 4xarnskls of F on each other. If the charges are separated by a distance of d/3, what al+r anny kx42 i0s)xp4re the new mutual forces?

  Two charged objects attract each other with a force F. What happens to q+y kuleq37f6the force between them if one charge is doubled, the other charge is tripled, and the separatiq+k eyq67f ul3on 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-*0t x uyauj u3/bhbp+ of 1.0 m. What happens to the magnitude of the force on th0 p/b3u+u -ax j*huytbe proton 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. Whs 86v7wk sxbx b45l/mpat happens to the magnitude of thbxsp5wb 48/l6v k7xsm e force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separatc07u2qa 6vfe7el,i9krj z ru*ed by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0ir62 k*7 qaf0uj7 c9uv e,zrel.50 m closer to the proton?

  A point charge of +Q is placed at the center oxx0b .p*exdz u:uh . +0m.vermf 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 otherem:uv+x.. 0zeu* dx 0p.x mhrb 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 at the centroid of an equilateral triwkmr)djtr 3d .,gs,t* angle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostaj,g)md. *swdrt3,t krtic 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 :agmxtju ( 0x+is not a vector?

  At twice the distance from a point charge, the stj tj-:5p me0ocrength of the electric field

  Is it possible to have a zero electric field value between +j:/f+uu7io qu k+e ;t*wllzjwn3 sb+a negative and positive charge along the line joining the two o 3:je7j;/tz + +u bqflnli *kuusw+w+charges?

  Is it possible to have a zero electric field value between two positive charges yx*kx- qn0ov2itq82ialong thx-ivn*t2q k 0x 8qio2ye line joining the two charges?

  Electric field lines nearxybr .8:nt e9g psitive point charges

  The electric field sho(qjvb r4 wt5gny. gk2e: ;u2tjwn

  Can electric field li+6kbo lpvr2zc5hv e kc4d**8sxk m2z)nes intersect in free space?

  A solid block of metal in electrosen 342e(:s y) t3yf7 ktt8y gqqslf/mytatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's8 g:t/7em3(es2ktf yyy)4s qtn l fyq3 interior.

  If a solid metal sphere and a hollow metal sphere of equal diametert,/wgi;j6po + cgmryt; sa7 d.s are each given the same charge, the electric fie t+s ag;p/,cmry oj7wt.;id 6gld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wheq+c pn0h;nej( re a uniform electric field is directed straight upward. What can be said concerning the chargh q0e nn;c(+pje on the block's top surface?

  If a conductor is in electro vus(g/d6-uua a,2z:e7 my qdestatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spheresfz8 pvou6rlj*s 3oqh++ gp 4( that is grounded. As compared to the case without the hollow sphere, the electric fr++3(pop zsgujofv 86q *4slhield at a point directly above the hollow sphere has

State three properties of conductors in static equilibrij2mg7l)x o1e,taj0f3q zhj t) um.

State Gauss's law.

  The charge carried by rxh :c(qs+s 8hone 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 has a net charge of +2.00 mC. How many mor0i q/gs y/n/qve protons than electrons does this pieceq0/g/vi nys/ q of plastic have?

  What is the charge on 1 kg of pkcj /*9a9(mlaypi hk.xu3 c.xrotons?

  An atomic nucleus has p9py;hf 3 jid5a 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 chargez.mep*x dqe)6 values of 2.0 and -4.0 mC, respectively. What is the magnitude of the 6z med.e*pqx )electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the y2 zdsw40bo86ixd(lzforce between them is 1.0 N. What is bixz0so dd4 w28zly(6the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far app 7pjv ecj(j+p:( q+kdart are they?

  The force between a e 6ngi v0;g* rnxt2d0p$30 \; mC$ 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 l2jatz.:x51-dkfpgap7y9so,u f tt81.0-N force. If they are moved to a new separation of 8.0 cm, what is the .ksl y2ftz8a-dj9,f5oxa 1:7tt ppu gelectric force between them?

  Three identical point charges of 2.0 mC are/y6:ag7yak /t x 3gmea placed 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 at 6ytx /gma/g:ea yka37 the origin?

  Three point charges are placed on the x-axis. A chk,dhshky3h)v52vrshr i 8d z8d m9(oe 8f6/h harge of +2.0 mC is placed at the origin, -2.0 m C to thd dh3h,vys)hohz h25f /rd8me986(k kivshr 8 e 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 :vg7/ fsk+ motx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of thesk:+o/vtg f7m force on the 3.00-mC charge?

  A point charge of +Q *hb/z9qe1otmis 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 chat1*mqhz9o/ b erge 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); Q2 = -1.0 nC is at (n7*e*df8ns gvr bhy+)g r h2exin4 g;30, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of theb gyh4v*iden*28nserr+gnfg xh3 ) ;7 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 = x8)egh yct 0b 4yj7j c37bvy,q5.0 nC is at (0, 0). 4chyyc)xg0vjyjb q t7eb78 3, What 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 ofe85nun71l8x ko )dzuxzc5loi0e7 r ,e an equilateral triangle weeuz0u )1r585 c7ll7oin,n8d xk ozxehich 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 separated by 3.0 m. At what pujale-jh-cbot o q146 uu2t3akt ;42foint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on 4al h 3qo2 - 1bu4etu6c;jka2o-jttufit would be zero?

  A +3.0-C charge is at the origin and a +v.t;umw+p9c k/ruz* s9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerocru9 vs;z/+mu.* pwkt?

  Charge +2q is placed at the origin and charge -q is ptn7hee1 o-;lonb2anp*+d* zdlaced at x = 2a. Where can a third positive charge +q be placed so that thonodtb 2 +he7e-dza l* ;n*pn1e force on it is zero?

  A copper penny has a mass of ede 4.ge5w4 o.5 op(pcxl 8gkq3.0 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 attraction of a fixed,4iev ,uyh6uf5 tcm i- proton some distance above it. How far above the electron is the i,f u,t5cev4humi- 6yproton?

  Two 0.20-g metal spheres are h;1f+);mv ohy z;hs mfkn/ qli:z*u8zpbbv)q0 ung from a common point by nonconducting threads which are :; qmz zo*)v lv/+zkff hhi)0ub; ;qys1bmn8p30 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 chargec0 v z1s2lkw)gr+egm w6.hw8y xs5b 1fg tii4: of +40e. What is the magnitude of the electric field at a distance of 1.0 m frwfz s:1r46w c)sv2ikg8m5tl.x 0+h1i yeb wgg om the nucleus?

  What are the magnitude and 6wyh0sv0z bd1 vq1y 4udirection of the electric field at a distance of 1.50 m from a 501vquhw0 y6sdb0 1v4zy .0-nC charge?

  A 5.0-C charge is 10 m from a small test chargn : new4l/u*a-virdu0e. What is the magnitude of the elev :4re -*u0/nladwu inctric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test cp y i8v 1nvo046g7e0mny+2l ijb2 jroy/ik s1nharge. What is the direction of the electri j+2ps4by vyj i1i2o1 nlnmyk8re0io/67g0 vnc field?

  A 5.0-C charge is 10 m from a small test charge. What i0e/6x hi - fszcw;spq*bse1 9b ,qtl9bs the magnitude of the force experienced wsse1 bx,q0zsqb6;etf ph9*9i c-l b/by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a valcm fihj9pjc( rv(t3/j: 4ez;r ue of 3.0 C and are separated by a distance of 4.0 m. What is th (;vrjjrif ez p: hmjc/49tc3(e electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 ctu sc; vwq29uv1y 9 :bcvp*wst3v,y.n m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field vs :1c329vsbn,vtu ; .qv ycupwyt9w*at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm+a ltr+hjkose x3/cu(gh /9.e mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mag+e ca (j/9xl+eosk rh.th3/urk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mnr/9 x uec,:fcC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between theenu:fr,/c xc9m?

  Three 3.0 mC charges are at the t;hf4vhyx7 z6mv):dxze-dn 7g hree corners of a square of side 0.50 m. The last corner is occupied by a -3.07 :y4mv-n gx6hxe hz7dvd f)z; mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thec(wuqx. xv)83 mf5k 4ejn9hgf 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 electric f(hvnxfc54x9 8gm .f j)ueq3kwield at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when ity-j)x 2ngmpo 0 is placed in a uniform electric field. What is the magni-p)xn20 goy jmtude of this electric field?

  A particle with a charge of 4.0 mC has a mass oen /j8)z bchmr an(1g. q;nu/gf $5.0 \times 10^{-3} \; kg$. 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 elect3 viy -uc:h7/z) nxuqrric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tnc)-v z y73:rqh ui/xuo be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed if a-c.h bqq3;lyq7w/ mx b5qq1nside a uniform electric field, and is suspended against the force of gravity. What are tmyq35 ;qca l-qf.xbqb1/ whq7he magnitude and direction of the electric field?

  A metal sphere of radius 1f0/3 mz (boa -yy9jgju0 cm carries a charge of +2.0 mC. What is the magnitude of/39zgayo - jyfbm0 (uj the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What 20qxg,n vcq; c kr)gqm.9gto. a )bu-zis the electric field 6.0 cm f.c)xqa2zu vngmg0q.) b9,ckrqg-o ; trom the center of the sphere?