State the law of conservation of eleq7xkm1;c om y-ctric charge.

  Is it possible for two negative charges to attract each o62; (eqfmc,et; rn)dk , ikrjmther?

  Is it possible for a positive and a negr;sx3:c jpbl3ative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a,:twu8vd 8.yu( lngl,bpf ns) cquires a positive charge and the sduv8 fl(s 8tlubw ,n ,)pg:n.yilk

  A proton carries a

  The model of the atom showsso vcibe*8q8y1a ol,3 a

  A neutral atom always haw: ms(bs3-mv )la:tc 8hm)mr hs

  An atom has more electrons than protons. The at,e i:wzhx;tp dh3w5l v,34nrdb gn+l. om is

  Materials in which the electrons are bound very 6/i;ia ;v ,mqdot)jx6 p rqwd-05zxuztightly to the nuclei are referredavztdj;qmi 6-u 6wrd qo, )ix5 x;zp/0 to as

  Materials in which the electrons are boun d d6hv/owuz/g+f7q, va 3n,uzd very loosely to the nuclei and can mov7dugzwhu /,q+ vnd/ 63v ,fzoae about freely within the material are referred to as

  A negatively charged rod is brought/l m25ld jzvy. near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charg.z5jllym2/ dv ed

  Sphere A carries a net positive charge, and sphere B is nen+zbefsp q.:l 1bzwv8r7 8f9s utral. They are placed near each other on an insulated table. Sphere B is briew zs:8vp8 7.bfzn+el 19srqfbfly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charh w6al :v8qttmap0*j) ge an electroscope positively?

  An originally neutral electroscope is briefly touched x11iuepf9i d*with a positively charged glass rod. i f11*dxp9eiu The electroscope

  An originally neutral electr6c jgha,6 v - wmgg1q.b7oq4closcope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the eljwg7-q.am q6h 6,1cg4bl gvco ectroscope

  A positive object touches a neutral e9jt.w8q awilud )g- wv7/pyn0 lectroscope, and the leaves separate. Then aig/u9w08 ndwt qyj).a-wp7v l negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obje lkm-)99de+ /klg 7kmo ds*gizct is placed on an insulated table. A neutral metallic ball rolls straight tmmdge-kgkis/d9 +zo* ) lk97loward 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 thef0 oy)bh)6dxd+j8 y vc Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects agz n-n /*paw2a0mj 5psre separated by a distance d. The first charge is larger i wna mp/-nsj z50*2apgn magnitude than the second charge.

  Sphere A carries a net w*f+iesce(pq .3cal9 charge and sphere B is neutral. They are placed near each other on an insulated table. 9f w e+.alcc3seq( pi*Which statement best describes the electrostatic force between them?

  Two charged objects attc .cx-hpjh2 3xract each other with a certain force. If the charges on both objects are doubled with no change in sepacxhp2j-hx c. 3ration, the force between them

  Two charges are separated by a distance d and exert p+g l /ieh; /ixf9rc0vmutual attractive forces of F on each other. If the chvh;fx0ir +i pec/ 9/lgarges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attra/ir );o9g :vwzvcv u2dct each other with a force F. What happens to the force between them if one charge is doubled, the wdvgv;29 )cu/irv oz: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 1.0 m. What happp/jr ,0n -bx-kk9u i (obket3+f0xleqoj; w .sens to the magnitude of the force on the proton if a second electron is plax if -3jr qx-+w/s9,(0kkpubknl. e e;o0 tbojced next to the first electron?

  An electron and a proo(hx+slb.ddx5lhomf(/ b 4 a.b oqw57ton are separated by a distance of 1.0 m. What happens to the magnitude of the force ax4+h/l5(s(h b7df.obb x o o5m w.qdlon the first electron if a second electron is placed next to the proton?

  An electron and a prot3u1t5fh w,g ieon are separated by a distance of 1.0 m. What happens to the seih, wt15fg3 uize of the force on 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 7we mqi;j 4f;3qcst4a w59jiisd/j5l gdq9+ pa 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 charged7qws ;gf/mljjd59+ 9iwi;pis5c4qj q4a 3t es 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 centroidnhwj4s/ ue0b8 mf.o(s4nd+qx of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrosta4b4.ndsqe/sh x 8fw+0m u (nojtic 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 sm4s:b 3jw0x ja vector?

  At twice the distance from a point charge, the fwo qz+su q1-9(jnp5tt3 c7x fstrength of the electric field

  Is it possible to have a zero electric field value between a negaetsyxq7vy 9mv+33j w8ge1z(b tive and positive charge along the lgj+t79 eyezw8bqyvsv(x 3 1m3ine joining the two charges?

  Is it possible to have a (a l8.x0lkr,6mzsw kp zero electric field value between two positive charges along 6p a,swx(lkr kmz80.lthe line joining the two charges?

  Electric field lines near psitive point chargesa ua/ rw0 2tgk0b1cxbs(i, qe,

  The electric field shown0fb uwoc-m lovb:00e :g p5c6w

  Can electric field liney(a *pd 3tag5bs intersect in free space?

  A solid block of metal in electrostatic zk eg,fyu5 ;vvcy9y1(equilibrium is placed in a uniform electric field. Give a statement concerning the electric fi(z 1ufyv 5yyvce,;k9g eld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameterq0gul:;hm; cg a6pge *s are each given the same charge, the electric field (E) 0g q:m6p;hce;g* ua lgmidway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in agbym j 1w*o/q(*f.//ks nvz qk region where a uniform electric field is directed straigo wgmz/1qk ** j /bns/qf(k.vyht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibritet otw-82 3tv/;rk crum near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thar +)tk rw.,fitt is grounded. As compared to the case without the hollow sphere, the electric field at a point direcfri)k. wrt+ t,tly above the hollow sphere has

State three properties of conductors in static equilik/ tt +zh/ap q/g-ej3 /xtzni(brium.

State Gauss's law.

  The charge carried bym-mht1k*d c 2u 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 protons than elel+v9 c.ul28 dxbt3u2bhd4kam ctrons do3b d k2lhtldc4+bu.x28avmu9 es this piece of plastic have?

  What is the charge on 1 kg o;il,n skyut6k1y /c8xf protons?

  An atomic nucleus has a cha oj;vjp3 ,r3y*:y xdygrge 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 va 9 btp 8g/fdzg:-p+vaalues of 2.0 and -4.0 mC, respectively. What is the m/p t g9p+a-:daz8fvg bagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and thex*3 .eg o.6pan, ,hcsmiw7b2tu8 jzll force between them is 1.0 N. What is the magnitude of the secon hu2tw,.*,spbnj6l3a gcm7.lzxo i 8ed charge?

  Two 1.0-C charges have a force sil6d7in. vt.fzwb. 38s8d 47 xwzajsbetween them of 1.0 N. How far apart are they?

  The force between a )dj4pqk+pg t4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experivvx 7rqcnk+ 5cs-,-qipv .c/e ence a 1.0-N force. If they are movevqsi5/vcv.- en pq-, crxck 7+d to a new separation of 8.0 cm, what is the electric force between them?

  Three identical pointnwfj 0ji4)f9o( yf fy8 charges of 2.0 mC are 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 mag)o9f (n40f8j yj ywiffnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on t;msq;dg7w;4d geq,wot k, 9pshe x-axis. A charge of +2.0 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 direction of the electrostatic force which acts on the charge at t;ek;wqdsg 4sp97,wg d;t q,m ohe origin?

  Three point charges ahgs7i 0(ralb31qo; cwre located at 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 wl a7so0bg(1 qr hic3;the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square,/ryydp dh h2- yg5;un3 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. What is the magnitude of the force that acts on the center charge if a third cyh- p y;dudgy52h3r/nharge 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 (0, 0, lfkf1w.ip4ngw /q7 v mo c3(er:p.as.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnit7ac pf. wkq,lr4 wiog:pe / v3mf1(s.nude 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 u , lm f-e0g-x,o/-i)brpynxjat (0, 0). What is the direct,/n ye-fx0b x uop, )igr-lm-jion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilafu:rxa:h+h050 y hvlqteral triangle which measures 30 cm on a side. What i+yuh0v5rx:qh ha :fl 0s 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 pam y29p3m7cgv63nf17d wmd fpoint, on a line between the two charges, would it be possible to place a wa32m1 f f 63pm7cngyddmv7 9pcharge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargeinytr30gvr-+/r2inru 2m5jd )x7d os is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zermrytjus0di227 nrixr+/rd)5vg3o- no?

  Charge +2q is placed at the oev8 egy vd(q6vz55*thx/gay/rigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so ev/gv5da ey z(qytxg 8/h5 6v*that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o;w0 p6pkq y;-elhs aw2f $4.0 \times 10^{12} \; electrons$ 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 n3t eyr0-o c5rue.t90 kq gv+dthe attraction of a fixed proton some distance above it. How far above the electron is the protrto+u5-evedn k9 0gyc.3r 0qton?

  Two 0.20-g metal spheres are hung from7ncfu/ vdd4 +m a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the td/+fvm uc74ndhreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has j9e(zq gh14juj e.3w1z5o l nia charge of +40e. What is the magnitude of the electric field at a distan95i wg.j4n lq1oz he1uj3zje(ce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fieldp,t2o, fs h3f dft2jkn se6p0: at a distance of 1.50 m from a 50.0-fp:f t2 2,h6sksnj 3 0dtef,ponC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mag:26lnd:3 hj)slah4vs,k k ycvnitude of the electric field at the location of the test charg:3 knld6j: sc)24 ahvvysk,lhe?

  A 5.0-C charge is 10 m from a small test charge. What is the q baowvsv1mux/:z dep7 pj76tt.1c; l4n9 p/ydirection of the electric fielqe.:p1;lwp1to p46/79 j/cza xydu ntbsvmv 7d?

  A 5.0-C charge is 10 m from a small test charge. Whd bnkgcg/m:hrf-5 -b4*h* kpwat is the magnitude of the force experienced by a 1.0 nC charge placedm nbk*g/rp:-h54b -dg *kw fhc at the location of the test charge?

  Two point charges each have a val z 91( l81loodtlqyc-mue of 3.0 C and are separated by a distance of 4.0 m. What is the electro9ly (o lqzct -11dl8mic field 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 -*y syh9u(rvg) 4.0 mC charge is placed at the 50 cm ma 9)*y(vhyu rgsrk. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti7 0omahtvnzboom8p ua-yr5 hc; 05: ;rck and a -4.0 mC charge is placed at the 50 cm mark. At what p;vo:m;0cu5oma80hr5 azynohb7- tp r oint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed9xrtmmh 7 8r8h at x = 0 and x = 0.20 m. What is the magnitude of th7t x8mrh hm98re electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners ofrtne u d58/i4s a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of thedne/5t8uir s 4 square.

  Consider a square which is 1.0 m loy/)jxxz;j8 t/sv; son a side. Charges are placed at the corners of the square as follows xzt/j)ssj /vlx;oy8;: +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 7(sm)*d8bdh dyr8rpy of 5.0 mC when it is placed in a uniform electrisd( yhr b8 mr)*7dy8pdc field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ruo-vm8k5 wv1 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/m w:z5dnxh i.n( y5uo g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it hz5dxn(:.uiym5on /w to be suspended?

  A foam ball of mass 0.150 g carriesi 8myw3js(/ hr a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity.m rs/38w(hiyj What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge4xuo j( dh5sv2 of +2.0 mC. What is the magnitude of the elevd suh o52(x4jctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carle b1hooy1.9m ries a charge of 3.0 mC. What is the electric field 6.0 cm1o9ome. y1lbh from the center of the sphere?