State the law of conseec /cg0ck6(dk rvation of electric charge.

  Is it possible for two negative charges to attrkgq0 (6nqk6etl 2 ) b-qhu.dywact each other?

  Is it possible for a poc yf/ emal7pb4vn-q+u13+aqhsitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durinf) h(8ja 1mj6 d(a9kz -v iogf)2yuxilg the process the glass rod acquires a positive charge and the ( ( ufjyad 2aofj xi)mz18g9l6)h-ikvsilk

  A proton carries a

  The model of the atom showspzj)w+d 1e at0 a

  A neutral atom always ha;n0p kd2u. zaes

  An atom has more electrons than protons. Th8nog ,f:c 9bzczh ah p2;k9rc6e atom is

  Materials in which the electrons are bounda9w8y xh8-i go very tightly to the nuclei are referred to aswai8o8h9y gx-

  Materials in which the electrons are bound very loosely to the nucl h 5vqdvn lzw5ka3j)3)ei and can move about3lj))w5vahdv 3q kz5n freely within the material are referred to as

  A negatively charged rod is brought near p4qee79y zzdu: p n1h:one end of an uncharged metal bar. The end of the me97nue:qeyz4 dp1hpz: tal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ne7kl mb4* +xuc)sjcfq5utral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is cor5*kucl+ xj) c 47smqbfrect?

  How can a negatively charged rodx7oq+rye(r(4fl y pe+ charge an electroscope positively?

  An originally neutral elecu oxt -50 k0qtx-r8 rtuxg6lg+troscope is briefly touched with a positively charged glass rod. The electroscop gq uk0x5t-lt+ urt8go6 x0r-xe

  An originally neutral electroscope is grounded briefly while a posit+x;y y6alvv*ps 4jj: k5doq3 aively charged glass rodvd av*l+4 oqaxjj6;3y :s pk5y is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.w teo3q rdb97, Then a negative object is brought near the electroscopqbd e379,ort we, but does not touch it. What happens to the leaves?

  A large negatively c5)zk)8xpui yf4 un(huharged object is 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 touch the negative object. xpzk) hiu5) u8yfu(4 nAt no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units ooga;sp*q3p(z+ wbyx gw8k;+ cf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge zy4* 4:w0g:eo3al g 3uoxcrpuis larger in magnitudwu4ro:ao 40 pzxyg: g3l* c3uee than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea ;a wfer7;3dnvr each other on an insulated table. Which statement bee; ndr7f 3v;awst describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargefg8rzj (m l,zx-:d xk74: tfsks on both objects are dt74szgz -8(rf:xml, d:k k fxjoubled with no change in separation, the force between them

  Two charges are separatb n9t0hhat cd44.qs : q,eyf86a7pwr red by a distance d and exert mutual attractive forces of F on each other. If the .0tf bdr n4: a8y7qrq a9cpth, se6h4wcharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a for qe;9m.ed/hywdr3 e:r zqif5/f2.pdjce F. What happens to the force between them if one c5m i3 e/ew.q:dyf/q ;zfeprj dhr.2d9harge is doubled, the other charge is 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 )h 5o7v iph.yc1.0 m. What happens to the magnitude of t5p. 7yhhcvi o)he force on the 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. What h7iy/ dye*v,nbi4hvm . appens to the ma ev7ymvdi/b4 ,y.i*nhgnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. uw2 yjl,ch :r:oe50i sWhat happens to the size of the force ,rjcy w h5l:o :0esi2uon the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seck,j79l 1*pfo+ pugeh kond 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 s*+kplfg9khj71pe ,uo quare'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 4esn va* c5)hiis placed at 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 vni*s )a4e h5cdue to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vq:)q,5 e-mt le zgkah1ector?

  At twice the distance from a point charge, tsw;9w ,nzk *arhe strength of the electric field

  Is it possible to have a zero electric field value between a negativ 7qorlzrwdr v)(j t:5p23pfo+ e and positive char5r p+p7zowrjfvql d 2o)t3(:rge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charges (-p4o- tt oaigalong the line joining tptoi(o- 4g-ta he two charges?

  Electric field lines near psitive point chargq6vv cu n:a)e)fc.cm ,es

  The electric field s gww(42c kayy m y6/;us;d. 3c-dlfp9cg -mhomhown

  Can electric field lines intersect in ir (o j3vh12rkeuv(/ ifree space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform p/7j2bw+g f fdelectric field. Give a statement conjd p/wf f7gb+2cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere / ugf*igptj,c y7xd -bd8,kb:of equal diameters are each given the same charge, the electric field (E) midway cpi/ gd, *:f-j, 8xbb7uy dtkgbetween the center and the surface is

  A cubic block of aluminum1cgdu r:0 px 8f8rs2bfk .gvocj7k8 *(aic gr1 rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said81cd g2 kug(f*prrksf bij0go8 c7.cr:ax 18v concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chs/:-y 3 y+qqyoa3muckarge

  A positive point charge is emc*6wfu,w4 umnclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the elecmwc4,fumw *6u tric field at a point directly above the hollow sphere has

State three propertizwfzn -nj7 7 m4f2fo0wes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one eo6o j+8u 3wzuhlectron 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 ;s3hopudx pz -; n /0w/)djqiimore protons than electro ddiq/u shn;/0p ;3j-zip wx)ons does this piece of plastic have?

  What is the charge on 1 kg of pp ou: yqbrds14ts,znrl 189j ;rotons?

  An atomic nucleus ha92q-r p11jv,-yisq-xd z atpws a 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 charge values of 2.0 and -4.+u 5dm tk+z,tvr:i4nm0 mC, respectively. What is the magnitude of the electric +zkd4 u i5mt,t +mrv:nforce between them?

  A 1.0-C charge is 15 m from a sexev a*v6q9 e:fc8ix95czl6tncond charge, and the force between them is 1.0 N. What is the magnitude of the second charge?ezie6vn tclx9ac8*f:96 x5 vq

  Two 1.0-C charges havb qwnw*c19y6 htl/lj7 e a force between them of 1.0 N. How far apart are they?

  The force between a .+ th glp478n9zpept;wzv3sup bh8f 4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienl(+ 0cvx2xks)hscsw(ce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenccsh0svs2l(w +x k()x them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The,vr + .h3kxvn*2mj xnw first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. n+.*v2nxrmj xvw3 ,hkWhat 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 char+a5srx x4o7 ioge of +2.0 mC is placed at thx4x5 s7i+ra ooe 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 the origin?

  Three point charges are located at the following pos2u.9 )nbu6 kfzrtu u6qitions: 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 the magnitude of the force on the 3.00-mCk)fuunq uz9t.u26 r6b charge?

  A point charge of +Q is placed at the center o gc:moavsj1z79 9dn:uf a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an:7jms:9d g1 oc uv9zna 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 (0.3zrhyfx8 ,,(zy(o:p kiw3s .3ku9dyxa0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude o3 kazdyopyr.8hf 3,(xsiz ,xw u9( :kyf 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); Q3h 2ig-y-i8*agm k9 gkj = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nCk92-g -ahg ikji8gmy* charge?

  Three identical charges of 3.0 mC are placed at the verfcm t-v ;mc;v;9i-57 uar ccyztices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of th;-frui5ct c;9yz 7m;v vcmc -ae electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.p*29jmzg ;zf p At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fo m2 jgz*z9pfp;rce acting on it would be zero?

  A +3.0-C charge is atn dnsw8;9 y8e.d; bfdv the origin 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 svw f8y;dn;9 e.8b nddis zero?

  Charge +2q is placed at the origin and charge -q is placedz j6r-+r0zl gnsiwo6i5i bv 7sr.21fj at x = 2a. Where can a third pos w6 jr0jr svz-75l+i 26 zonig.rf1sbiitive charge +q be placed so that the force on it is zero?

  A copper penny has a mab:;u,s,bn buyw9aef 8 ss 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 thez4p 0qui qrb)- force of gravity by the attraction of a fixed p 4r-z)bq0i upqroton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point b0b ef/:(gozw3nnm ml8y nonconducting threads which are 30 cm long. Both are g3 8 zmm:(owln/be f0ngiven 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 elect0k ./p/: ayut ywqv-9pv5unpgric field at y0:qp9twv.gupv-n5u/ / ykpa a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance 3inkyn. dl v0l8k 70sdof 1.50 8ndk nvi03 ld.70k lysm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni wi1 /sr)q/d-;wmrf e9 .q. i-uhelkectude of the electric field at the location qkcw / hmre/d)uql f1iw-e e-i. s9r.;of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of tv;zxa1uf,-eau ;vj k1he electric fi1xauefk uj a;v 1,z;-veld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f96.pb,mlk+ o tfcb9l:ei 9l/w,rsrriorce experienced by a 1.0 nC cl.i b/t+lrm99b,p ks9 6 i,weo:lfr rcharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C 35r;ecdetb e2 and are separated by a distance of 4.0 m. What is t;e53rbdt 2ceehe electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0v slj;vm;*fvv3 1mbbu71 sn3 g cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at tsvgv;m1bb *j3;fv3 7 n 1svlmuhe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark -ac9 nuxr+ j9 obtaag5w,ma,gt 0l7g.of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electricar,axgug o0w, tnc9tj 7b+la-5g am.9 field zero?

  Two point charges of +3.0 mC f .r/nfp9huo0 u( ,qzy5uvzv 2and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bu (zu05nyvqru/f. 9o,fv z 2phetween them?

  Three 3.0 mC charges are at r 7. ,1ant0utotg 8kiwthe three corners of a square of side 0.50 m. The last corner is occupied by a - 0k.n wtrauiog8,t7t1 3.0 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 the f6y /ow3-wwsi 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-w ws6i/oyf3w the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform hx0hatmn07 ic r/7d0felectric field. What is the magnitude of this electrhh7ni xt c0am0f d7r/0ic field?

  A particle with a chargqe8r s;a:dpc 0e 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 N/C hyh pu 14r1umaspi:o, a2w w(4pointing downward. What charge must be placed on the ball for it to be sury(uhap1 sh2 4mw 1w,a4 ou:pispended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Tic )pzov6h:/ mhe ball is placed inside a uniform electric field, and is suspendepv z6hci/:mo)d against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cpcd cjx ahud--4mh:fh etz:63py,r 56harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from t6d: -4zpf3mux hca,-eydcrpt h 56jh: he sphere's surface?

  A metal sphere of radius 2.0 cm carries a chao7- -dj j cje11y/;cwi-rja r kqcyl)(rge of 3.0 mC. What is the electric field 6.0 cm fr -- ayw jrlrj 7jcce -yq/ik;(djco)11om the center of the sphere?