State the law of conservati(mns4r o ec3k2on of electric charge.

  Is it possible for two negative charges to attr6r16tvfm4 a5w qyjrhsg255qract each other?

  Is it possible for a positive and a negabtwpvwtt2af ty(y/aslf9)f: 0 7 *b0y tive charge to attract each other?

  A glass rod is rubbed with a piece of silk. a u yh 3n3f )s,avx3,coj(r4uqDuring the process the glass rod acx3rhousf ( vja,c y,)4 qu33anquires a positive charge and the silk

  A proton carries a

  The model of the atom shows anjk-l; 0 jnr*k

  A neutral atom always hazv4 tv28.dikd0kyw +g s

  An atom has more electrons than protons. The atom is;wk+bp* wbr29u;p zzu

  Materials in which the electrons are bound ver v50xq;p1 uvvoy tightly to the nuclei are referred t v1vqo;x50vpuo as

  Materials in which the electrons are boundj2fvcskj 5ezh 0x-,c8 very loosely to the nuclei and can move about freely within the material are rsccefxk, 52 v80hz-jj eferred to as

  A negatively charged rod is brought near one end of an un.jhwsut 5(t4fcharged metal bar. The end of the metal bar farthest from the charged .tj st5wu(h 4frod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placwgry f yjy,+c22-tc.g8/o x kv mm2/oyed near each oomggy+o 2/cx 2kmcv-8,2y /.yt wrf jyther on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge a47itx-y8 4 /pr(bv xh*bj4f1huc ftq zn electroscope positively?

  An originally neutral electr.(9qtbe d :hvdoscope is briefly touched with a positively charged glass rod. The elect(:.tb qdhvde 9roscope

  An originally neutral electroscope is grounded briefly while a positively chargecj+to :aecg18ul3 el5 d glass rod is held el a1j5o+cl ug8:cet3near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral v8:2exrn li xz 52tsagrv*9i fe-(:zielectroscope, and the leaves separate. Then a negative object is broug axex5ie9z8vf2 ir-2 zt::*n ri(lgvsht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated ef1/ r/ht8thykrb1 0 jtable. 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 t1ttf8b yh0jr kr/e1/hhe negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coukoy sy t2dj/18lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sqkw* kww9tqs *3 q8f0(dtr;aueparated by a distance d. The first charge is larger in magnitude than the second ch0qdf*w kt89 qkasw*(;wr3qut arge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eewjr8 mmzzsoz;h-6)) ach other on an insulated table. Which statement best descrjh;wez )86s mz)o-zmribes the electrostatic force between them?

  Two charged objects attract each other with a certain force:l3 d ywb1ymf(. If the charges on both objects are doubled with no change in separation, the fml 3db:y( wfy1orce between them

  Two charges are separated by a distance d and exert mutual attractive forces of8xh3hix:3 w*y7kgetw g5 ii 5y F on each ig k g7y83 h3exhi5yww:t5*xiother. If 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. ph4abz1 h08qz What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwezhh 8p1 b0q4azen 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. - msu)qq aj6w7 What happens to the magnitude of the force on the proton if a second electron is placed next to the first elect7 s)jq6wmqa u-ron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tc acqn,*-a4 ex:fum 4zo the magnitude of t*axn q c4zu:-fc,am 4ehe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton4vbunl4d 3 2kl are separated by a distance of 1.0 m. What happens to the size of the force on the proton ulbln dk2 443vif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q isa b8w3jw0bj slrf)5u7 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 swswu 53ljajbf r7b)80quare'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 center of the square?

  A point charge of +Q is placed at the centroid of an equilateoz-is,4zf wf-x*8cm-lw4fhs i * ua 2vral 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 forcvfho * mu*x-icff-8,zs 4z l2wwsai-4e that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?ec9v+ . 8;oq*fj5 doult5oqrx

  At twice the distance from a cc8+w zfyycv4t8 ) pt7point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negw9* tufrbtei,6ca3(y ative and positive ch3,r b(*tc6yuit w9e faarge along the line joining the two charges?

  Is it possible to have a zero electric field value between t: y;ed fdhqmap1z8r /k0f42k zwo positive charges zra q/d1 fh8 kd0ey2mpk4 :zf;along the line joining the two charges?

  Electric field lines nearzpys) sa+yhxv5 ) c6e4 psitive point charges

  The electric field show,q2sl k-jbe;i n

  Can electric field lines intersect i3g.c m2afi07aejk6sz n free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform electg 6gqjj 8v2rs*ric field. Give a stjs*qv8 j2g g6ratement concerning the electric field in the block's interior.

  If a solid metal sphere 8xhxwi/j o;( rand a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midwayx(8o/ rxhiwj; between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region w5 2de9 hx*wpj7a* g17x3m8 m8lai d w)yrrbydlhere a uniform electric field is direcy7 jedplwrx1r gdd2lbwm 859i*7m )ya3a *x8hted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric z1/y0b(5 d yq(lxkg fb5b aj9fcharge

  A positive point charge .j .jjvec3t5vis enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directltv35.jejjv .cy above the hollow sphere has

State three properties of conductors in static eque,lfvr* e4zj3fn3o)9 onkn 4uilibrium.

State Gauss's law.

  The charge carried by one elect * urid5t*t1czron 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 mor ,/.xr *ls-ste6*js mdb;ry pne protons than electrons does this piece of plastic havep*rj6ds m,y/x b s.;rs- n*lte?

  What is the charge on9p3q sta 61ycs 1 kg of protons?

  An atomic nucleus has a outozu2 ) e,b9:uv2*zxx/ ovmcharge 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 charge values of 2.0 and -4.0 mC80awpc wdahc k4lxf;z2 u6caqg5;o ((, respectively. What ipla ;og(q6adk 85z; cw(2u0c ac4 xwhfs the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is d i2 w(q;9 dgt6cge,jk1.0 N. What is tceq9(w2;dg gik6d, jthe magnitude of the second charge?

  Two 1.0-C charges have a force bef9 tazo4d9.- ruzmf,xtween them of 1.0 N. How far apart are they?

  The force between a 4r9ccr .adx.prgcdy/ ou4e +7$30 \; mC$ 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 g tvz0drn f.3 ;zeyr;;1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?;g0.vdz3;ern ;f zryt

  Three identical point charges of 2.0 mC are placed on the x-axis. The fi54a 231scy, xghjzx0 cegmxq(rst 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 whiche,zycgaxhcm2j0 (5 xs 13xq g4 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2q6 -g w1f3qf v4oyd4um.0 mC is 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 and directi-6fy4gfq4d3qwu vmo1on of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 fhr-ybygst;,+quv40 su 7u/pig -u4b = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00h0y7guqp-ufurb i;g tbu +s/4y,s4-v m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is 3red ak ;kino:l4o 4ac3(ui tmi;fw19placed 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. fikr; ;nu4d:9 o(3 4aocel31imtakwiWhat 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 (0u+ /ooxl vcc2 +x(yv3w.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (vy(+w3l/c x2+uo vocx 0, 0). What is the 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 a5nql:vz79 c )jbf 9z(fhx hdg ,nez ::k.s+lgdt (0, 0). What is the direction of the net force on the 5.0 nC chard::7e(+vg9n f dhsnk)gzl,b9jx.z5 lz:chf q ge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateyzc/d0t 9dggx na5 f+(ral triangle which measures 30 cm on a side. What is the magnitude of thd05 +9nf xggc zt/yad(e electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0xo4y 97s0(fl lg2 iqtitz; pv0 m. At what point, on a line betwez0qit49tol2 ( lixy7sg0v;pfen 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 +/ ;)yd)s 8v j1rpemitf9.0-C charge is at x = 4.0 m. Where on the x-axis can a third cip))fr v/et1;jm sy 8dharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2 *y3rugi5 bxamxd,9jcz 7o d34a. Where can a third positive charge +q be placed so that the force on it is zedj 3d5 g*uzimr c,x3bayo4 9x7ro?

  A copper penny has a mass of 3.0 g. A k(wyp-,ytr,r (uxa) stotal 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 -ng)kcape *g. the force of gravity by the attraction of a fixed proton sepcg*akng-.) ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a cwl 6rj oo1d,rnd13h5common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the elorj16dnh,dw3cl1 r5 o ectrostatic 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 qi02cbx7re8r magnitude of the electric field at a distance of 1.0 e 8 bi2qr7rcx0m from the nucleus?

  What are the magnitude and direction of the electric field at bvjl*)qnwi /9*jm x8t a distance of 1.50 m from a 50.0-nC bv9*x t /ij8*j)qnwl m charge?

  A 5.0-C charge is 10 m from a small y 9mgfwga--3w*4gtinv3 nu8 ctest charge. What is the magnitude of the electrw n3tfv8uwigga-g3 my n 4*-c9ic field at the location of the test charge?

  A 5.0-C charge is 10 m from a smpi2 qofyqh0pu9*n7 f0 all test charge. What is the direction of the electric foiq yfp phn*2f 0qu709ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t pt7y-8)uts5hk b t7anhe force experienced by a 1.0 nC charge placed at the location of the test charght )n8t-7 ptaku sy5b7e?

  Two point charges each have a value of 3.0 C and are separated by a bx inp yaaq,p qz5s:skuyy8d;j)6i+/2e.)jz distance of 4.0 m. What is the electric field at ay+ )jkppz,ba:5 yi2s/qy). sx6e q d;8nizuja point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meteh.t (cmcd orq qjdlp g+- ,1hne;4z+i0r stick and a -4.0 mC charge is placed at the 50 cm mark. What is the eleq; q, i-jmcr z+dg(ctl0o h41ne.pdh+ctric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4i*c) imn t89xi7ys yp3umd.od*z+ ,3 y/yw pah.0 mC charge is placed at the 50 cm mark. At what point on a line joining the t,o3 hu/pi*c 7pmayy.9*iyzdm)inxwdt 3 +y s8wo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plac*re svk x+17(;1vcirm. sz weyed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mvwvz.sr+*x1ce ri;mk s7 (e 1yidway between them?

  Three 3.0 mC charges are at the three corners3jc1esv2 r.b4 225yn mwukakx of a square of side 0.50 m. The last corner is occuc r3 kw52 e2nxumvab1j sy.4k2pied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m o m.q vem3vo+3mcygl e:eb.9+lb9(rgon a side. Charges are placed at the corners of the square as follows: +eqbylb oc3v.o9e+vrml m( g g: e+m93.4.0 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 of 5.0 mC w o os48y6ar1gvdf dq2s)ciy27 hen it is placed in a uniform electric field. What is the magnitude of this electric)q24ysgr s 8dyioo a26 vcd17f field?

  A particle with a charge of 4.0 mC has afl.(vwg ,qo.x6+ nx yp 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 N/C l a9e5pim i.2 j2v1) wq 3blidc8+bss0y2fc wvpointing downwarw9la 3 )5ils2+8jwv2dfymivc pe.12 c bs0q ibd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass z +le1kpl u/1a0.150 g carries a charge of -2.00 nC. The ball is placed insiu p1l/e a+zl1kde a uniform 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 the magu( f7p fe;w uq4 pc2a4b2+xprlnitude of the elect24ufblw+ pu(;xf4c re7pqp2aric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries u9 .abkeg7x ;ha charge of 3.0 mC. What is the electric field 6.0 cm from the centerxa7e bu k9;.gh of the sphere?