State the law of conservation of elew+k27 mez*q.nsvn slzc r*1 e9ctric charge.

  Is it possible for two negative chz52lr/ wdllq 789gizc arges to attract each other?

  Is it possible for a positive and a negative charge to attract each othei )kq2y s*1mwxr?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acug7u c99c3l cbqu9cg 97 ucubl3cires a positive charge and the silk

  A proton carries a

  The model of the atom sho 57d8xuq;uzi.m aih7q ws a

  A neutral atom always ha/zosn 05 , xmk b/f4(gfm6iilns

  An atom has more electrons than protons. Thevji+x+h e-h8evyp/u 5 atom is

  Materials in which the electrons are bound very tightly to t)94dqgc,jdcm9lkvsc :m ;hv,he nuclei are referred 4 mg:dvv 9 ;9,qjhc cldkm),csto as

  Materials in which the electrons are z;docs -flg9 ,37mgzi )+ czxjbound very loosely to the nuclei and can move about freely within the material are referred to asc+7-;m 9jlczgzsz)3fo x ,dig

  A negatively charged rod is brought near one end of an uncharged metheeh 4 pdblk36m/f;:xal bar. The end of the metal bar farthest frbfdhk 6 ph e34mlx/;:eom the charged rod will be charged

  Sphere A carries a net positive charge, and sp 2yd.ahl feregji+7qv,0+ a t3here B is neutral. They are placed near each other on an insulated table. Sphere B is briefly t.l2r iq jyt3ehd+ 7v0agea,+fouched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelyj;reou8ca u -8?

  An originally neutral electroscope is briefly toucw.ql8 kj3b-xe wl5t7d hed with a positively charged glass ro.wl5t7 b j elw-x8qkd3d. The electroscope

  An originally neutral electroscope is grounded br1t f1imd,ma4 x vcx1u(iefly while a positively charged glass rod is held neafix mdc1,xavt1m(u1 4r it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, ann*u.34r* y+jlo td fvqd the leaves separate. Then a negative object is brought near the electroscjt* vf.qd uon4*l3yr+ope, but does not touch it. What happens to the leaves?

  A large negatively charged ob)u 3 gmfhguk4+4++e2mma cu(0jpk /j)rak fslject 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/f u0jkj4u+r+)lkp)4ha2eg s g+kf(mmu 3cma 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 the Coul.qb 7gwy9,bsm 6 )lautomb constant $k$, which appears in Coulomb's law?

  Two charged objects a 3x cq:z4re2-l1cor 9 i+yoftyre separated by a distance d. The first charge is larger in magnitude than the second charge.r3yqc yf421ie:c-r tz x9oo+l

  Sphere A carries a net charge and sphere B is neutral. They are placed near z :ir ,, w4xzq.oycxs3each other on an insulated table. Which stat sizr:4o xxz3w q.,cy,ement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force.wgnm we )),7xxwucg(y q 2m,2b If the charges on both objects are doubled with no change in separau,wgx2(ybe,x g w)n2m)mc7qwtion, the force between them

  Two charges are separated by a distance do 2/x.a xe-, qeac:9mloxa6n o and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, whm aenxa cx.,/x o- l26ao9qe:oat are the new mutual forces?

  Two charged objects attract each other with a force F. What happensxt2op d u(m4b /z,rt1q to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bx przu,(td41b/qto 2metween 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 happent7 i 3rf1k-5;epavhxms to the magnitude of t-vt5hrexp af;i 3m7k1he 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 happens s idv.01g xekd h00rb+h)pwd3t r-v- uto the magnitude of the force on the first electron if a second electron is placed ned-g-r1rx0pv .s3h00u)idwt vd ehk+bxt to the proton?

  An electron and a proton are 1qqnq b jd/76 gp7u mtt+:jf ld0g50yh1ps(wfseparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved7yfgg1 hj tqm(f0w su1d:/p 6btjpl7+ q50q dn 0.50 m closer to the proton?

  A point charge of +Q is plahqe,q9 w ):ho-y xctbuv4v 79yced 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 square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magniv)hce bqx y:ot y7w -vqu,499htude 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 equilateral triangst4- 4d.pstj ble. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on 4td4 j pst-sb.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 iswz k; 4ix6y z(xc-zatvh8+; pj not a vector?

  At twice the distance from a point charge, the strength of the electri )*p8gm-odj1jymj e0ec field

  Is it possible to have a zero electso)s;;vm4oa) s9v tcxric field value between a negative and positive charge along the s t)svoamo4;;v) cs x9line joining the two charges?

  Is it possible to have a zero electric field value betweenhkk j3h2un om(k 4a6o3 two positive charges along the line joining the two char42 jkkohu33 mn h6o(kages?

  Electric field lines near psitive pointqng 6n,/n ;x4krjfzs+1*r umw charges

  The electric field shokp72pqpga 0 6awn

  Can electric field lines intersect in free spacefb1zp7jkzy iqn/ g+z+zf,9 4e?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec fo+ 0 /1ut28vwp t:yelz8rumitric field. Give a statement concer2umrz8wtp1 0ut olfve +i8y/:ning the electric field in the block's interior.

  If a solid metal sphere and a hx 1: rau, bjd1i,kr.qaollow metal sphere of equal diameters are each given the same charge, the r:1,bx d,. ajqaur k1ielectric field (E) midway between the center and the surface is

  A cubic block of aluminum restscmu1; w5q upb t1:5xzp sdwm4x fm.2r8 on a wooden table in a region where a uniform electric field is directed straight upward. What can be sa s5x51urb w41z2p mdp qm;c8.tum:fwx id concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrdg0m hsh8lorr:dcsu ; b/a9(7ium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere4u7xcz;0wdsj*9 o fnl ux2p h( that is grounded. As compared to the case without the hol2;juz9n7dc*0 hpo4xsx l wfu (low sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in staticcoe)m9hv n290 ;d tm2df sd)nexg5s u.cwq8k 5 equilibrium.

State Gauss's law.

  The charge carried by onel ugh 6dg*u,8a 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 +2.0l u:r7yjdg/8m;vawn 0. - bqmk0 mC. How many more protons than electrons does this piece oqj7m.;/bw8k-y0g n m:urdvl af plastic have?

  What is the charge on 1 k0s:8j bckap w-g of protons?

  An atomic nucleus has a chargfcjtz)+ 3(v w7v 0otxatxs/l 6rx:j5 ze of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated b 8chexsnh5x81 y 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwe8cs hxx 1ehn58en them?

  A 1.0-C charge is 15 m fro+o8 s3;- y fbmrfpc;uem a second charge, and the force between them is 1.0 N. What is the m 8-p +yrcbf moefsu3;;agnitude of the second charge?

  Two 1.0-C charges have a force between them of .eati)2 /hby/zllf( cl( ;xmf 1.0 N. How far apart are they?

  The force between a uc x3zgib)+c54pyu. z $30 \; mC$ 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 1.0-N force. Ibdh,w w5 nhax5r g247 gou+z;if they are moved to a new separation of 8.0 cm, what is the electric force between gduwhbo7,42arw5 +zi5;hxng them?

  Three identical point charges of 2.0 mC ar5hxkbyhxkh)de x 2 u+bl+.r3*e placed on the x-axis. The first charge is at the origin, the second to the right at x = ehh)uxb +*byr 32.lkhd+xxk5 50 cm, 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-axq t7z .b4us eolguq.+u2a q5t(is. 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 cmolz +q.b sa25ueu47(gt. tquq mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are log7v9 rrc,,si) iyrji z oez:8:cated 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 the magnitude of the forccjy iiz,i )g,7:os9zr v r8:ree on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squarex 6i nt0d rh7 j7m5s95o7ddeyv, and a second point charge of -Q is placed at the upper-left corner. It is observed tn vjri 7e7dymd0o 5hxt79d65shat 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 charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC(iowfd q88hrkj 82zg2 is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude jzgiofk r(288w hq82dof the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -+xk7uoi + ky-ebszodh+7wiw6l3+j l7 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 on thw s7xyi z+u +kd7h-b++ei6ol3 o 7jlwke 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thq;w1((hpr ncre67f j xe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one oqew(xc;( rrpnj f6h17f the charges?

  Consider point charges of +Q and +4a0u-x)qsm 9,k k5tsteQ, 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 force acting on 0,ts a-mxkktse)9uq5it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whereo/ cdoyw451nc qk.h j7 on the x-axis can a third charge be placed so the net f.ncyj/dcokq7 o 14h 5worce on it is zero?

  Charge +2q is placed atq*f 2.syhv m7w8ooh;r the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force;v7wy ms *o.r2hhqfo8 on it is zero?

  A copper penny has a mass of 3.0 g. A tota8z2n gwb5z jtw24k :awl 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 upx ug4,ig 40inf against the force of gravity by the attraction of a fixed proton some distance above it. How far above the electro0 gxnu 4if,gi4n is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondv)v;sbed)u r3ynlgjt cp/- s31cw.( oucting threads which are 30 cm long. Both are given identical charges, and t;v gs3cv. s-o l t3rc)en)bp(y/j1wudhe 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 vc9wnt,98wfd kgqo8 9a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from qk8g9 wd9f9wo tvnc,8the nucleus?

  What are the magnitude and direction of the electrcne*hy 2:5b j y6p08j/bzggwfic field at a distance of 1.50:f0ey bz*y/ghjngc862 b5p jw m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. ;) )p3o(8 (cczdbbimdasx*xi f;(f hq What is the magnitude of the electric field at thz;*sd ao(pb)qc8d3fc)ib(x m( x;hfie location of the test charge?

  A 5.0-C charge is 10 m from a small test-wb8t ctr a4 msmhk7.t:kyn8 ) charge. What is the direction of the electrin8sw m4)c: at8b. r-tkhy t7mkc field?

  A 5.0-C charge is 10 m fromp (a:a b424hw33 iyflk ef 7j,b9deync a small test charge. What is the magnitude of the force experienced by a 1.0 nC chyh,fcl7a3ipj 4 3edk24e :nyabb(w f9arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and s+acm7dof sg p;a.10mare separated by a distance of 4.0 m. What is the electric field at a point7 sao;dfcam1mspg .+0 midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cheyzg i l58so)p *0qhiory*18 aarge is placed at the 50 cm mark. What is the electric field at the 30 cm mai) goy s*8ar5iqoy8 0*zhe l1prk?

  A 5.0-mC charge is placed at cnhcof*-3bey l. o22v3sxpn4 the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Atho2x.pnn*ey3 4f23 vbc olc-s what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 +rs9xk: hxf05zzd5og n33zx, uzi)ky m. What is the magnitude of the electric fiiz5o5,xfrz:9d 0hzzy)s3kxx n3+ guk eld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square oc b7tikf:1f o-0-xw xvf side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the -x:f70kvf-ocwxi 1 b tsquare.

  Consider a square which is 1.0 m on a side. Charges are placed at tq 5vwj1mylra2 .xdm /4he 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 the magnitude of the electric field at the squa2qmy vl /dm. 5xw4j1rare's center?

  A force of 10 N acts on a charge of 5.0 mC wh+bzc,3 7 fe+ nk5jjfswen it is placed in a uniform electric field. What is the mafb+cnw+ f se,7k z5j3jgnitude of this electric field?

  A particle with a charge of 4.0 mC ha4y-d x9malm2 is 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 0.1z/h3uf vab/s.20 g is placed in an electric field of 6000 N/C pointing dowa3v /fubs/hz.nward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -: y 9- qecviplzuv9d5m82ks-r 2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravityydlsmk :ze8rciv-9 95pvu-2q. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm ca g((bl me 7 xym4z-)jqy6y;wbsqax1s(rries a charge of +2.0 mC. What is the magnitude of the electric fiy awb qx()6;mme47jxg1ss(qy bz( l-yeld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is tkjbe; :ic)vdrw9sw 73 +zbz+wpq,1 cahe electric field 6.0 cm from the center of th ;ccdzbkw +:bavwjq9 sp7r+ )w e3zi1,e sphere?