State the law of conservation of electorvt1k /hb:-jric charge.

  Is it possible for two negative ch3 v p ;/1:bqzk4fuwztvarges to attract each other?

  Is it possible for a positive and a negative charge to attrarj kx1wn;;pt8 ct each other?

  A glass rod is rubbed with a piece of silk. During the prq m b+0l 7oxccr s0/d;zizvn1-ocess the glass rod acquires a positive charge an-sr/ zi0+z0ccq; b7 1o mxlvndd the silk

  A proton carries a

  The model of the atom showssyto , )udtoy 9av4j9,t 7+yri a

  A neutral atom always hasmh w7b .ei)caesz,i zcq16 i7qol*5 spv:53da

  An atom has more electrons than protojrq, 6gzv 9hq,ns. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are r *(osh-q;/lf7d eu9 .s h 3ufkbhjt6eieferred b/f jlhuh-9e6k sti7q3f uoehd. (* ;sto as

  Materials in which the electrons are bound very loosely to the nu puwhm;-x6y.bclei and can move about freely within the material are xu.wbphy6 m ;-referred to as

  A negatively charged rod is brought n,ykq:st--hxghe )y:av z2 fw3ear one end of an uncharged metal bar. The end of the ,k)zwey-yf: -t h vs a32qghx:metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere Bwso ).vgea,*z is neutral. They are placed near eg s,ewvo*z) .aach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rodcm :bw thmn);3 charge an electroscope positively?

  An originally neutral electroscope is brahhp6; 9;xwu7q 7kgd-nl ;3l r)wxdayiefly touched with a positively charged glasl-6)yq9ud;3x ;n7w kr gxh7; hd awlaps rod. The electroscope

  An originally neutral electroscope is grounded bj mzm3dzij2g3r w5 ynns 05p9.riefly while a positively charged glass rod is held neaj sm 5zr9n.j0gmw3 dp5i 32yznr it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and di7jbp d )lt,:2-msf/fl (n prthe leaves separate. Then a n) df tm:jn /pf-ldbri l2(,ps7egative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object iacx( qox,9u*es 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 *qox , uae(cx9touch 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 thecdcw 48zxd.bto,,4zo f-xy(s Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ct e0hb4 .cxl4vehv, u5harge is larger in magnitude than the second chac4hl 0eebu.hv,v5t x4 rge.

  Sphere A carries a net charge and sphere Bg+k -s/r2v lgw is neutral. They are placed near each other on an insulated table. Wlkr+-gg wsv/ 2hich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a 421yr7 amtsgb d1t)mst5+uig certain force. If the charges on both objects are doubled with no cham15t4+si1s t)y mu rt7a2gg dbnge in separation, the force between them

  Two charges are separated by a distance d and exert muf z+j :9zw(+suj ft(gz(yeo;ntual attractive forces of F on each other. If the charges are separa+yfz(zu9g t(s:jj+( ewof;n z ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to gb( sim+ ulg ;thk /f:7q.cin6the force between them if one charge is doubled, the other charge iklng+:6tqmu hi(/;7sg fib.cs 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 tohnu1u diq 9pm(+t2m+g the magnitude of the force on the proton if a second electron is placed nex(t+mp udq h+ m2n91igut to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What cp)ao m sf;3w*de (se1.85n poar1fzvhappens to the magnitude of the force on the first electron if a second electron is placedmf 15( opec*8.n3rd w 1pfoz)asea;vs next to the proton?

  An electron and a proton are separated by a distance of q zvf8+ fbj12b1uawm0 1.0 m. What happens to the size of the force on tjqf +wbmzbvf0a1 1 2u8he proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centery zlfyb)w2r-ss, n 1z+ 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 thryswny2l ) szfzb+1,-e 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 force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of+x1-h*p bqbxmj33g- dm0c ,r5ejrzf w an equilateral triangle. When a second charge of +Q is plac-zrmb-3 b h,fq35p*mrwj e 01dx +cgxjed 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 other vertices?

  Which of the following is not 8b)wkko1 o;u. jc iex7 h/xd4na vector?

  At twice the distance from a point charge, the strength of th a ,ta, xgs*kixmn74ju736mcje electric field

  Is it possible to have a zero electric field value between a negative and positi :hv zs6pjvs 3f2xvn;gap-7d8 ve charge along the line join6;z:xpavv - shnd3sf 2vg87jping the two charges?

  Is it possible to have a zero electric field value between two positivehbmtdy*4 scg8mt 5(/*gy; ytw charges along the line js my;w ttb*ydtyg 8(/m4 *5ghcoining the two charges?

  Electric field lines near psitive pofejkhr6wlm-i+ 0x4m k +o749m2yir /lzzo/j wint charges

  The electric field shos2ns7k yko81 cwn

  Can electric field lines intersect in free spacr*9of hczqa, h7c ep,6e?

  A solid block of metal in electrostatic equilibrium is placed in a uniform1x aa7q*pibq1n.:9o bpbw w x 37m)(jb8zec kj electric field. Givexwncq1w*3zb9eja a)8:p 1m7jbq.k ixbbo p(7 a statement concerning the electric field in the block's interior.

  If a solid metal sphj*w8)kwe3tb - q zbcp8ere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway b3wt)wcz8e-8 j*qkb pbetween the center and the surface is

  A cubic block of aluminum rests on a wooden taj;*:rf/ m-y-gs rvrl3 oujir /b)8l0kg ga t1oble in a region where a uniform electric field is directed straig vo /0j;-f ar8k l-*:gsrygbtgloi13r ru)mj/ht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equi2c 2 t0 7ojkzkmv*s7srlibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thaoqzr -nnphr zb))s0ia3f/+y.ceds: - t is grounded. As compared to the case without the hollow sphere, the electric field at a point direi /-3 ed s foby.nrz)zq0c:r-ha+np )sctly above the hollow sphere has

State three properties of conductors in static 9s-e0t nuqt5m equilibrium.

State Gauss's law.

  The charge carried bi; kj2-1 hzrphy one 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 more pr8zh bw8c(se +wotons than electrons does this piece cbh88(zeww+s of plastic have?

  What is the charge on 1 kg k/r(aui+kd5ct- 1b yr of protons?

  An atomic nucleus has a chars+k*uj.+fdn rge 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-;4pk/4 xy8trcnq s1ka0c eg m.0 and -4.0 mC, respectively. What is the ma84- t xamp0knsk/1qc4;r yecggnitude of the electric force between them?

  A 1.0-C charge is 15 m from a + :eueuzx-cjtt;8lp ankin )y27 ,ql/second charge, and the force between them is 1.0 N. What is the magnitude of thel8kqe alte iyx;: )tpnn/u ,-cuz+ 2j7 second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparh6zfe 11y3jb;+oh gvgt are they?

  The force between a 69+3auhaege )wwv gg:l1w sn/$30 \; mC$ 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 1.0uh+a5s73g xck-N force. If they are mo 35uhx7ak+sc gved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chaoht+c-+ tnf;z tb b a)*xec+/jrge is at the origin, the second to the right at x = 50 cmj*bn; cczo+tf+-+bh /eatt)x, 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 of +2.0 mC i3xc7dqzjtaj6 ai;o /)s 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 direction of the electrostatic force which acts on the charge at o tjqj)xa;da6ciz/3 7the origin?

  Three point charges are located at thfjn7k87prc m( e following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC 8kfn7p7 c(mrjat 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 jw e(r+wf (;sahvgbg+x xi;e 6dgd)5-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 pg(;6d5d+ (w)xe+fvb j-xri g;gewsh aositive 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); Q2 = -1.0 gkaim 8h*ctu l;j01:x nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC acg0m* :l8itu j k1x;hcharge?

  Q1 = 6.0 nC is at (0.30 m, +6upjp gg,5 xb0); 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 o gbj6u5,g xp+pn the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaj)(tez7w4w y+sbb q+ /(c*r jh,kqupnteral triangle which measures 30 cm on a side. What is the magnitqh/w, *(q)+4cjty nzp (sb+jkb7rwueude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by, j jb-o-n;l.gvu a-rw:;yggeyh xx hn)5v 2n5 3.0 m. At what point, on a line between the:n5y25x-luw nvh;ryo )en gvgg ;b-- xajj.h, 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 or + impuq+l7qwga a/uzht1( 7l-dgaov275;blfigin and a +9.0-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 isf1/7p gm7dil2zutwq57lv b;qlhga- oa a+ (+u zero?

  Charge +2q is placed at the origin and charge -q is placed skcl:.(ve.,1.p +mcqulkx fw at x = 2a. Where can a third pos ks, .ecwqcu.:1ll kf (pxv.+mitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass og+v1xpt o5. gie)c)-huzp 5 eff 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 the force of gravity by the attraction of a x2+xl l7 cj*ez+ul1exfixed proton some distcllex 1uj* 2zl7xx++eance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common nr cvbq: -5so(-t s wks3fs.c4point by nonconducting threads which are 30 cm long. Both are given identical charges, and theow-ntsrq 3f c s.5kvs4c-sb(: 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 magnitu xi:l3 9kemd7uyb+0uode of the electric field at a dkou3+ meui7x:0lb y9 distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electrictojl.h7nfq .j /t,;vu,u pyt2 field at a distance of 1.50 m from a 50.0-nC charge? jqp2u, yvno/uft;jlt .7h.,t

  A 5.0-C charge is 10 m from a small test charge. Wha/ ui+df). tu ictx+f9y e1a/fat is the magnitude of the electric fiel.f d u9iyu fctt+x1/+eafa /)id at the location of the test charge?

  A 5.0-C charge is 10 m from a small d7rrmem8* l1d1 gcuv5-.cd zttest charge. What is the direction of the electri1v u57t1dr-r*8emgm d l. dczcc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitgwx-)zy1a oreu04dz 0pa2u y1ude of the force experienc gy2ad01xazyuwru)4p -oz0e1ed by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sqi/94tcg0o qceparated by a distance of 4.0 m. What is the electric field at a point midway between the/0qgi4c q9tco two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charpjj9h q;gt,p(4 k5bvb ge is placed at the 50 cm mark. What is the electric field a;t(,q j 9pgpkb45jbvh t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ch w(vo2ypb12v,qqy x9 earge is placed at the 50 cm mark. At what point on a line joining xwvyp 2bv y1o q,29(qethe two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x3cx uy pmnsp+3(*e8 mx = 0.20 m. What is the magnitude of the electric field atc83e+n uy* x( mpmxs3p the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0sfh1iz bq3 )2l;-nii c.50 m. The last corner is occupied by a -3.0 mC chari zhl2;1s-f 3b)i ciqnge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.n/d1-yk, wa) c*hlva82imfoaygj;z 3 Charges are placed at the corners of the square as follows: z l3j8yoma ,v nh)/1f ;idy*wa-kagc2+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 )mhz l y; oa2xb373kqg6h-s xva charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electri;y3m6z2kbxlvh3 7-axh so)qgc field?

  A particle with a charge og qj x2br sq.tg(o:5 zi;run*)f 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 plac:bs1zhdog1 1 ued in an electric field of 6000 N/C pointing down1 o1b1ugh zs:dward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ojkk j5. ay:(m*c1ncaaf -2.00 nC. The ball is placed inside a uniform electric fie:ck.aj1*m ajk 5nac(yld, 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. Whata);:bybln 00; id j1/pvmvuxr is the magnitude of the elec; nybvp0;0)ura vb m diljx1/:tric field 5.0 cm from the sphere's surface?

  A metal sphere of radius iu+95 t) n dng*sps:ta2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of5* t+stuan9gp )i :nsd the sphere?