State the law of conservation of electric cyv5sudqch8 o)errc:tdg j*4(hx 7; d1harge.

  Is it possible for two negative charges to attract each oth- x3s dl:p q1xc(fk-4ke y:ljger?

  Is it possible for a positive and a negative charge to attr/9h ii 9me1vlract each other?

  A glass rod is rubbed with a piece of silk. Duky jloo48a*6 sm 4m(hrring the process the glass rod acquires a posit(hoao 8ks4l46 rmjym*ive charge and the silk

  A proton carries a

  The model of the atom shoj4v blf))ol bo8,mt m,ws a

  A neutral atom always7rz9lacf9 o )xu1r df+ has

  An atom has more elect )n k(;uet1rg tlqb5sg9*umo0rons than protons. The atom is

  Materials in which the elezn5w/qc i//d)gk cf9qctrons are bound very tightly to the nuclei are referr /kf/w95 zdqic gn/c)qed to as

  Materials in which the electr;zv uhbo iz+2*vuq:2h ons are bound very loosely to the nuclei and can move about freely within the material a 2i+huhuvo ;q:zbz* v2re referred to as

  A negatively charged rod is brought near one end of an unc/ati .,n ez jg9aj+)aque 4b4yharged metal bar. The end of the metal bar farthest from the char. qae4ae izb/n+9gtja,u4 yj) ged rod will be charged

  Sphere A carries a net positive charge, awmc0sc: o6+ fwnd sphere B is neutral. They are placed near each other on an insulated table. Sp :+c60f mswwcohere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elesq ,kz+s*hto q -ol4lnzc*3, lctroscope positively?

  An originally neutral elb: d,d qw7ain3ectroscope is briefly touched with a positively charged glass rod. The electrosco3qw,n bd:7dia pe

  An originally neutral e* x u1x*3y;/*cfwwv gnjngt3 ylectroscope is grounded briefly while a positively charged glass rod is *yc 3tg 1;jg* vnn/fwxu3wyx *held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sq o+3dog+)bh/i2cjx o6o ygc-(kn6 k separate. Then a negative object is brought near the electroscope, but does n6jq2) ih g+o+n xodcoy6kb/ ck3s- g(oot touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neea;2y*3 3acu-gd0c b 6nzb*tvpuygt3 utral 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 the negative object. What is the finygb cae330u6*2bdgapztc3yu;v -*ntal charge on each ball?

  Charge is

  What are the units of the Coulomb a 3fbb l,o((d3xt 6qk id)j)mfconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.z ;oqnoi0 6 ;z.uzpmr5 The first charge is larger in magnitude than the p.;no6 0; 5irmuqozzz second charge.

  Sphere A carries a net charge and sphere B is neutral. They are3tjbh88x vf -k55jbo s placed near each other on an insulated table. Which statement best describes the ele bvjs5j8ft-b8 x5hok3ctrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargea86:w x *l9q5 iqkjpt8k(j luys on both objects are doubled with nok6 a:j8ipqqt wu*k llxjy8(59 change in separation, the force between them

  Two charges are separated by a distance d acv08k t,v5 jnvnd exert mutual attractive forces of F on each other. If the charges are separa8kjv5,cv n0tvted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What haps4h.wap0+2 b3pnayq upens to the force between them if one charge is doubled, the other charge is tripled, 2qpwnap0yah b.u+43s 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 hap utgetu0a0/4 t4sar (jpens to the magnitude of the ftteaaj4u4u t/r g(00sorce on the proton if a second electron is placed next to the first electron?

  An electron and a protuq.6ry7rv .vvir:7 9xx xx es4on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if ru9x.iyx74qvrsx6 v rv :e.x7 a second electron is placed next to the proton?

  An electron and a proton are separamh+956j ybocxqc ,9pbted by a distance of 1.0 m. What happens to the size of the force on the proq x+b hcp56c 9,ybmoj9ton 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 second point cbw 4anta* .lr:harge 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 other three corners of the square. Whtwb*.rn:l 4a aat 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 th(z wl.aus:f (ie 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 due to a third charge of +Q placed at one of t l:(uz.i (awsfhe other vertices?

  Which of the following is not a veccbm 36z g+qxn) 42pmhbtor?

  At twice the distance from a point cha6 vzqxu4:ryq s4c 0m7k /zrw0krge, the strength of the electric field

  Is it possible to have a zero elecpmry .g8j(6iql5*tk h oima,- tric field value between a negative and positive charge along the line joining the two chal-mktgy6h 5r. i *mo8ia,p (qjrges?

  Is it possible to have a zeso(aq+nk ,a2 iro electric field value between two positive charges along the line joining the two c2, (oak +siqnaharges?

  Electric field lines near psiti;.tbc42 apav rve point charges

  The electric field sho 2+rja2h r gyloz(0lv3wn

  Can electric field lines intersect in free sfx4 5bgi( gu;ub4:mqqpace?

  A solid block of metal in electrostatic equilibrium is plafumezrcq rtw/-0. 0d ,ced in a uniform electric f w.cm/zt0,-rrqde 0fuield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sph 0vdx-v 4 sosnbhtmv9 p2-m97vere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midwmvs-nv sx9v40p7tod2 vh9 b-may between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regio1,xg 4epl2w7)g r lrf9 0bdyrvn where a uniform electric field is directed straight upward. Wh bgryl rvdw42e,70)g9rfxpl1 at can be said concerning the charge on the block's top surface?

  If a conductor is in electrospq9vj2ys )qqhon65o + tatic equilibrium near an electric charge

  A positive point charge is enclosed in a .su6r0,n ukao hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point san0 6,r. uokudirectly above the hollow sphere has

State three properties of conductors in staz hz(p)knws d apclz:tg0bu6 8-b:;ko0m zp) 3tic equilibrium.

State Gauss's law.

  The charge carried by one elte (s5li+3ed.k*6zc2 *kwiet t wo6 riectron 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 ofipv- 2342gqx5m n8/m szxemn32 qjf es +2.00 mC. How many more protons than electrons does this piece of plastic -q3v e3smmn5jn8 gsix2zpqfx m2e /24 have?

  What is the charge on 1 kg of protd1sqwp18m ,p5es o ph6 c/,hosons?

  An atomic nucleus has a charge fo6 *zewtl5x0tyny9zc+f . b0 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.b 0i,*4 th0ulawlep2w 5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of th w2ta0 hlui*pb lew0,4e electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bd;9 1:93 kc z*5gpx qwtdqpop s.xuvk*/vics4etween them is 1.0 N. What is the magnitude of the sq vgpwvc 1pk3;d skpc o99qd* zt:4ixu* x5./second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart aw4 ja o*b7g2s. yjado1 (itbb2re they?

  The force between a b1 f er;3 ogx7u wy6b0bx.bc*kjf:e,q),xa p y$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apartv;7:( zuydx0c uae( pm, experience a 1.0-N force. If they are moved to a new amuzpdy( 0ev(7cu;:x separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC arr0kd/y ;n4l7vx )med ce placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third ie7d)yn v 04l/cxd r;kms 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. q 0r+h ya2t wp4nbh)f(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 (h2 0rfwat)hyb4qnp+acts on the charge at the origin?

  Three point charges are l/bu zx 5: l1ym3t5t5 cnpm)rip7g ovc.ocated at the following positions: Q1 = 2.00 mC at x = 1.00l/tmpxnoz 7:5r yig )ctp m5.v351ucb 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-mC charge?

  A point charge of +Q is placed at the center of a square, and a 6; wa pj(joloe gcx.e/ wm- myr.3d+9lsecond 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 thee /m +clg.3jlda.w6; jemxpryo9(o-w 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 (gvuc4 /4yj enp ,7w.xg0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magni4gx4g .7,wj ecn yvpu/tude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -jvx5ycwci/+adavr p fap+;c/1:x 5v-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). 5x v;dc fyavc5-v/i/p xa j+r+a :c1wp 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 of an equilatejs9ck9mfo2c:q 8 4 rwnral triangle which meas 4q n:wrj9o 2sf8kcm9cures 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 andsv 3tbgelv le)uc,ok2yq:zl ).b-+6c +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic foulbebv .3sg,qze) c toc6ll-v)2k:+ yrce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge i kc7lh r4-uj50btkaxr: 2m7pos at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is ze:jhk 2 u7oxlta0bpc k7m -45rrro?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cac c, .zdwfc xx/,*ws.dn a third positive charge +q be placed so thatcx. dwf sz.,dwx/*,cc the force on it is zero?

  A copper penny has a ma :v5w v(bxtpsov1p4 w(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 the force of gravi7rn 7cx18(rr1hnv r yaty by the attraction of a fixed proton some distance abovh rr(nxrryn7 ca7v118 e it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads m0iky:+e h * nym:mvakj( .l5iwhich are 30 cm long. Both are gimn j:0ih my v5k.(:me+kyl *aiven 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 us/+ecml/ ;cebght4kq(i) j0 of +40e. What is the magnitude of the electric fielk (/4;e ut/sg)jmq0ib+ hcce ld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a a58 o2nyg;x6hojwjro lsb,x9 c5c fhe2j0 i4 )distance of 1.50 m fromf noh5 2h, jxs5 )4yiwbooglj;8x c9j0eac r26 a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the (w/,,tyg v ck )f6czm yic*u/smagnitude of the electric field at the location of the t,()wgyku czcv/fi6 cm/*st ,yest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of tm+xz0evj,w 3a he ele jxw 3vzae+0,mctric field?

  A 5.0-C charge is 10 m from a small test chaegi3 dcr o+xi/s,)* vbrge. What is the magnitude of the force experienced i3de *,xsb) vo+/cg irby a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have y2d 8- m.femfta value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between mm8td .ffye 2-the two charges?

  A 5.0-mC charge is placeww s*x9/rzcq 5d at the 0 cm mark of a meter stick and a -4.0 mC charge is placez5swq9 c/wr *xd at the 50 cm mark. 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 stjt7 cfk ;q1 vzdf/ip+(/j8mbwick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two cf+zc jfq/d7t 8pb/vj1 (wkmi;harges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = dj+fxw gyfd, a2/6*ga0.20 m. What is the magnitude of the / da6gg2x*f+y af d,jwelectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sid(bz4krl:n;zj:n (js be 0.50 m. The last corner is occupi;(s zlj:bb(4nkz jn r:ed by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 mx ebq .a+r:4dphfxb(, on a side. Charges are placed at the corners of: d (+p.xeh r4qfxbab, 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 field at the square's center?

  A force of 10 N acts on a charge o (j:yh m/en;:wsqf*f u;pl *sdf 5.0 mC when it is placed in a uniform electric field. Wh/n mjdf l:y*(:e ;wfphs;*qu sat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass 3y8v )xrhy8 khof $5.0 \times 10^{-3} \; kg$. 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 kgvk gb2+.. haelectric field of 6000 N/C pointing dk2aggb+hv . k.ownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charg pkxp(3-r3uj ke of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directiok3-jrxu3p ( kpn of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mag)j7 gom)unp47/pe5f ulu1hl, 7 qlf+u:kpoywnitude of the electric field 5.0kl7pu 7 1) p u +omn4yqe)5/:fwllpufh, ug7oj cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chaq4jf)h4yl :ooz hb +p5s, o8q gxwim;)rge of 3.0 mC. What is the electric field 6.0 cm from q islhb)4+ gjp 4y ;5 h:z8oq,f)wxoomthe center of the sphere?