State the law of conseg;;u /h de-oau.md69dl-ccz ervation of electric charge.

  Is it possible for two negative charges to attract each ot8g r.z r+b5/yagns.zaher?

  Is it possible for a positive and a negative charge to attract each ojm++a7lgbqhwbs6g0ez 4j6 3b.cw -rxther?

  A glass rod is rubbed with a piece of silk.vlgryay68 mmkr 3 5+d* During the process the glass rod acquires a positive charge and the *ydaryl8m +g56m3kr v silk

  A proton carries a

  The model of the atom shows* 0wlzgl1m0qi).rll f a

  A neutral atom alway7gml+i pe*e-e( mer-ps has

  An atom has more electkjzq 43v)s v.frons than protons. The atom is

  Materials in which t65* gcm7zdcdbhe electrons are bound very tightly to the nuclei are referred6c7c5d* bzgd m to as

  Materials in which the electrons are bound very loosely to the nuclei and m (1nxom5rcxk6 h r0ju9-x nd7can move about freely within the mate(hnn9x6urjr0o517cmxd mk - xrial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal/az(vg6g o*lz bar. The end of the metal bar farthest6zo * agz(gvl/ from the charged rod will be charged

  Sphere A carries a net positive charge, and spherop+(p-flu)e0h4wgz0 n vh z ,me B is neutral. They are placed near each other omh o0hz+ nvz) lp, fw(e-0ug4pn an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope po xl:ax03 -domasitively?

  An originally neutral electrosco;prgr;g )j0o zy5f xmft) 129mujbvho,hdn 10pe is briefly touched with a positively charged glass roy du1x 1)mohj bjn0g0);mg95ffrz, rpho 2 t;vd. The electroscope

  An originally neutral electroscope is grop 2y,;.oqpnhtbf ,)ggunded briefly while a positively charged glass rod is held near it. After the glasfhgg;2 ppto),n, qyb.s rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the q)q 1qkkau8 c(leaves separate. Then a negativeuq1kq8()kqc a object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A nx.bqeq7w.glub7:/ a-ihgn f7 eutral 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 f7b b7fel/wux.g: qqig -7nha.orward, 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 Coulomb n* e*(fc*d*bsp)t f yqrpss47 constant $k$, which appears in Coulomb's law?

  Two charged objects are separai4 gck 08yvor+oeuz.o55dmyxdlkk.762 s; g ited by a distance d. The first charge is larger in magnitude than the secon;soz m84gkgd+ e0cik7 5u2ykylv. .r ox5i6odd charge.

  Sphere A carries a net charge and sphere B is nej6w7ubsg3v2:*b zqs)et upj 6utral. They are placed near each oujs:zbw 3gstevju 6 *6)b7 p2qther on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each oth+u v)/xgy +pnfer with a certain force. If the charges on both objects are doubled with ) fguv/x +yp+nno change in separation, the force between them

  Two charges are separated by a distance d and exert mutual a -asw t+zqg:6ottractive forces of F on each other. If the charges are separated by a distance of d/3, what are -:zaw6t+gsqo the new mutual forces?

  Two charged objects attract each ottf5upxjv3r wm 0;:s:gxc64m dher with a force F. What happens to the force between them if one w m3g50umcfdxt xr 4;p6s::jvcharge 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 bguq q-j/2r-yj,g mo5k y a distance of 1.0 m. What happens to the magnitude of the force on the p-qy ,5mgq- orj jukg2/roton if a second electron is placed next to the first electron?

  An electron and a proton are se,hok dv+l,k(28o eivov o/*xe parated by a distance of 1.0 m. What happens to the magnitude of the force on the fir v , ,le+*i(2oohdoeov /xkkv8st electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 d7nl8x4r8tp w:m:sx jm. What happens to the :7wm: 8sxtjn4x8ldrpsize 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 cencmq5f3; 9vo t6, sthxjter 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, ih, 39oc6mfs;5ttxqv jdentical 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 an equil po*c 9ae1llw1x //gxlateral triangle. When a second charge of + l /ogewpxll*ax c1/91Q 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 the other vertices?

  Which of the following ija*7bq 4zkyo b5;d+-t6 ylyfis not a vector?

  At twice the distance from a point /f/ 9mirl5hp rcharge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posit xaxvf3dv:); cive charge along the l )v 3xdx;:afvcine joining the two charges?

  Is it possible to have a zero electric field value bev.xpiu::u re3 tween two positive charges along the line joinuuip. rve:x:3ing the two charges?

  Electric field lines near t c4uenhq.e;5 0 /kgfp3ohg5 npsitive point charges

  The electric field show(n w7;-rsqo e*y evi2bn

  Can electric field lines i esjrs2h-m a +os2*lo+ntersect in free space?

  A solid block of metal in 9 coc5 o 73n-khf1pircelectrostatic equilibrium is placed in a uniform electric field. Give a statement conce3 h91k rp ci-7confo5crning the electric field in the block's interior.

  If a solid metal sphere and a 1ynyxj. /u(nyw9dh 2lhollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the cen1/wn 29jlyuh xd .yy(nter and the surface is

  A cubic block of aluminum rests on a wooden table inma8;p dtj*/ru, pu8 nh a region where a uniform electric field is directed straight upward. What can be saidp8;ra,j tnu 8/um phd* concerning the charge on the block's top surface?

  If a conductor is in electrostatic eoiy4 r(p; ja2k//4aj vvc ulr,b7 wg1pquilibrium near an electric charge

  A positive point charge is enclosed in a hollow metal.8 3h/5e3v s,xb+ uongbtbwfxlic sphere that is grounded. 3b/xgtsb,+ubvfx3 w8 ne.oh5As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static edy:er: gd5ae* quilibrium.

State Gauss's law.

  The charge carried by one )kvv+d *fhlxbej- 7:rpa;,n doh;i5kelectron 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 o,+9xdo zrgzhvn 3j5,af +2.00 mC. How many more protons than electrons does this piece of 9d5+h r,j,xagz vzo3nplastic have?

  What is the charge on 1 k3h - le2+*0n .aunxfe-t h hq4im9xfkgg of protons?

  An atomic nucleus has a chargor9 m 7)vgtm+x+ p6hdkrq a8v7e 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 -4.0 mC, m4kv,ks:xtw *65lm mlrespectively. What is the magnkl5vs :6m w,mtmlkx *4itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, anddym.9 gsxtu4bk.a.7 y the force between them is 1.0 N. What is the magnituty.abym9 s.ku x.g4d7de of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparw )7v7dm,t1 e2mm pzuyp y(ht4t are they?

  The force between a mmnjxwj5y* a2b,*/ ww$30 \; mC$ 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 2nzc oa2 z- j7t,)mg1a+-owhqm vj3 cvforce. If they are moved to a om12m+3zgcaw ha-- qtv7z2o cnjj)v,new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on-i urv (., )rgimrbsx1pfvz7 l1sxy;* 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 magnitude and direction of the electrostatic force which acts on t r *(xy1g)1muirvxrb7s p,l;fzv .is-he charge at the origin?

  Three point charges are pla.x:j)ziu b si 2; m7od+vsiq:eced on the 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 the ori:)zqj .:+ mssibx7 i2vuoi;edgin?

  Three point charges are located at y70yj m5 c1n7re zrxh3the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC r7y1h0 jcex7ryzn 35mat 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 sec96 f v t6d jwro+d.mzgg49-batwb4wq4(jka 6 eond 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 mgwgk-r9m(+ dbj44 wtqvj 6zo9bf4aa6wd .6teagnitude 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 is at uq,mok v)n19r (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thevkru 1,9 o)nmq net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,x4q w6/hzc: 9kyedgh; 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of 6 gx/q:; ye49zkd hcwhthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are bx .:qnytw(3rm5 k0ohvn /l9uplaced at the vertices of an equilateral tria.hlmo( qnw5uknyv r30 t/x9:bngle which measures 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 and +4Q,e gv+/gsr -h kmi i69pa3dik75 1ccf2x 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 acsgikm1- gf /r69vced+57 k 2iicahxp3ting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m.*2cs 1b ioa urysqh(41 Where on the x-axis can a third charge be placed so t1co1ihs(y sr b2*4uqahe net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed oexea1:2 g3(2aht ttn at x = 2a. Where can a third positive charge +q13e ghax ot t:t(2nae2 be placed so that the force on it is zero?

  A copper penny has a mass of 3.v/qq+xa v2 417gujsgz 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 fixe 1o-n a4x q,u+y5wgwksd proton some distance above it. How far above the electron is the protwny x+k-4 wo,1qa5usg on?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads t 8fba5wxf*+ swhich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the th8f+a5fb*tswx reads 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 : z yq7e/ r*7(axyfdib*ktd m;p*bjn1electric field at a d z7njx *q(mdy*b:p;k7t/f1 ebayrd *iistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a du-jno+kzf i5 d0+ gfd5il1/j fm .s0lpistance of 1.50 m from a 50.0-nC 1 mzj0f 5p+ -flf5idkou.j/g0dlsni+ charge?

  A 5.0-C charge is 10 m from a small+ 2mdu i)s-o5oul /qfl test charge. What is the magnitude of the electric field at the loodmul5f+/i )ou2-l s qcation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What im wkw9)e f))uws the direction of the electriw9)wkum wf)e) c field?

  A 5.0-C charge is 10 m frol 67x(.4 xsub e+bdxham a small test charge. What is the magnitude of the f 74bux xe(blx6+.sa dhorce experienced 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 separated by a dl0v q+4 g3,(fcjdjfvn istance of 4.0 m. What is the electric field at n4+fvjcfjd 0 ,l(3vqga point midway between the two charges?

  A 5.0-mC charge is plj2 .yg,qt *50be dr9vwdafc. maced at the 0 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 the 30 cm madb,e0fg9ya..m5 r*2 dqjw cvtrk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chars(6blr1c-( jcp6ep(i e eu9trge is placed at the 50 cm mark. At what point on a line l(tp6(ee s-iuc1(pe6r j 9bcr joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.fkf,.ue 9 j1ua0 mC are placed at x = 0 and x = 0.20 m. Whakafj. ,uuef91 t is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges areim l) .j wkfog:mnw9** at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fie)*n: g.mwo9 m lkwfi*jld at the center of the square.

  Consider a square which is 1.0 m o4g1iv 4c(, wvrgecf-1cjzw( c n a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); zc ew w1cf(vg4i(j-vcr1 ,c4g +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 of 5.0 mC when it is placed in 8p1zwvz(ur +l al f)d;a uniform electric)1(l rzdluw+f va 8p;z field. What is the magnitude of this electric field?

  A particle with a chagh d1j0gh4j4t2 qaxzq /d8/ibrge 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 o vsr*o/fw jf*72f qn3vf 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspende rjns*q v/wffvf273 o*d?

  A foam ball of mass 0.150 g carries a charge of -2.lgr3jm6 : ke(h00 nC. The ball is placed inside a uniform e(3jm:kh rg6lelectric field, 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. What is the4; zk (bvwo, jup-u5i7y/ewur magnitude of the electric f;w7ij y k pv54rwub ,-ozeuu/(ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3--xv1 c :xg,k1n kocpzb*vd d6.0 mC. What is the electric fieldxxvd :c*d kknc-ov6b- 1,z gp1 6.0 cm from the center of the sphere?