State the law of conservation z1z9e suxv-l: of electric charge.

  Is it possible for two negative charges to att.s 7kpykagjw b( vc(,k-bc/ sh u;5*tvract each other?

  Is it possible for a posi3e -kl7 p:kz*hp khp ;d9m6kbdtive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. eqo4 d*8oik,c During the process the glass rod acquires a positive cc qdi ko8*o,4eharge and the silk

  A proton carries a

  The model of the ato:+y ,wglmh79p ndynk -m shows a

  A neutral atom always h74oq/k: lepi(bz-x a vas

  An atom has more electrons than protonsahs(a ,p4clq37mq+o fvc9 j,u . The atom is

  Materials in which the electrons are bound -m2em x)zra 2 r*y l/b8ts-kcavery tightly to the nuclei are referred torel c )my2a*a8-k- xm /2rbtzs as

  Materials in which the electrons are bound very loosely to the nuc hao hxrg bshvcy4 .85dd91t;/lei and can move about freely within the material are reh.s4h8htyo ;rx5d/gd1 cva9 bferred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. w;w6j x c5pj)mThe end of the metal bar farthest 5wwmj) cp j6;xfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Trjhuz tffo0),j)q v 04hey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corr) ju4 o0v0f)jfh qrz,tect?

  How can a negatively cha0k yxp1 )hrti-rged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touchl1n 3js ap( lmt;3:qcjbz4 zm 0k*3obxed with a positively charged glas(c j*jk1am os l mnz4ptl03 zqb3:3xb;s rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positiveq+y/1hn q6 4wu)av sxgly charged 4 /yw)1 +xu6ansvqqghglass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches *y0psb js 0x)rcc;u0za neutral electroscope, and the leaves separate. Then a negative object is brough; c0 szxj0ru*ypcsb)0t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargem0 4+y ()snulc,p cxi 7royr0z-e+q ood 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. At no time does either ball oo0 u,n zlcrqce) r++0-ysimy7( op4xtouch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant i6-x gygjp izsoz9f 1:n5 g6(0tkb +ts.yky4 p$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg ile,t,;o c3t+etqcv -e is larger in magnitude than the second +oeq, tcc3;-lt,tvie charge.

  Sphere A carries a net charge and sphere B is neutral. They are plac8m 2c.1m xhrhiq 93nvxed near each other on an insulated table. Which statement best describes the electrostatic force between thr1i .vm xqm392h cnx8hem?

  Two charged objects attract each o6cu*s;i-8mgkm uhp3ather with a certain force. If the charges on both objects are d sg-h;8mu*cami pku36oubled with no change in separation, the force between them

  Two charges are separated by a1 oz3 +mksgw.k distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, w1g+k.zkws 3 mohat are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to th (/ ce2txnkfd7e force between them if cd( k7x/e 2nftone charge 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 1.0 m. Whaq+a e19+naf8boqvdj xb3wr(oar( d/.t happens to the magnitude of the force on qor(qa9ae+8 ro(b 3v/+n1x. d afjdwbthe proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by9sd m2 2ycptn.ky-2zm a distance of 1.0 m. What happens to the magnituz2myykps. 2t2d -nm9cde of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are s0+,y ul7 ygxvwgdqb,)9 6wkxseparated by a distance of 1.0 m. What happens to the size ,yd0sxv6x l uww+ggkb9)qy,7 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 th+u(pp3 ea od:me 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 squaru+dpa:p em3( oe. 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 equilateral triangle. d8kxwxwc9;b5fsu -u/ When a second charge of +Q is placed atbsf 8u-;9dwcx/k u 5xw 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 is not a b2:z : myytnfor6 lxpe17+xk,vector?

  At twice the distance from a point charge, the strength of txw9k3z(d89l0o. 4 as wzgvowj 9v*nxmhe electric field

  Is it possible to have a zero electric field value between a negative an*6tax x)j,. uitd vvu.d positive charge along the line joining the two x)v*da,..j iuu xttv6charges?

  Is it possible to have a zerg)un7 nq1 c9efo electric field value between two positive charges along the line n cueng)7 19qfjoining the two charges?

  Electric field lines near psitivepo0ce) kcb-i0 fs06pu point charges

  The electric field shown y:-t(dyq 4r,t n8o6czk pi+ls

  Can electric field lines inf/u0k: ef8a u9,rymthj+6eyo tersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in ai8+kx2q 5 p lqx5 cx8g3vzcntts ,9jw; uniform electric field. Give a statement concerk5w,g j2n8tvtx8cc+3 qp9 lqxis5x; z ning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each7p-)g7 wozjlx w6 po2os4 ltn. given the same charge, the electric field (E)w7 z)ln. opwo pg2lxt-sj 47o6 midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region6vr c(cowf:recw7r ub 6 *k*ed,)isg9 where a uniform electric field is directgw*b:9i rruo,e wcr fe(d6s *vc67kc)ed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equih og19 82; lf1b+qsazy kyny7vlibrium near an electric charge

  A positive point charge is enclosed in a hollow meta46 u vus:duik s1/+vyh0dyyf8o/pa 6ellic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dirsa h+dveu iy0d/ of8k vu y4u/6pys:16ectly above the hollow sphere has

State three properties of conductors in static equilibriujcgaumnl 05 .yc+0x3mm.

State Gauss's law.

  The charge carried by one electron is a )x0xkxe(az+e *, s huvx.p3y$e = -1.6 \times 10^{-19} \; C$. 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 mChn+:a0ir htq o01v7hj *q t)rl. How many more protons than electrons qa7tn lrh:t) +hijqvrh0* 0o1 does this piece of plastic have?

  What is the charge on 1 kg of prov.zot++n;, w5gup o odtons?

  An atomic nucleus has a charge:0cqcdk jjmtsa,9l; : of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5lz0k.kvy0 8q3i bs r)f cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f k0fy0z8i)s qv.k 3lrborce between them?

  A 1.0-C charge is 15 m from a second charge, and the force bx0kj, 7axdy9d;nql b2etween them is 1.0 N. What is the magnitude of tyxdjbd;nk l79x2 ,0qahe second charge?

  Two 1.0-C charges have a ftl*ab+hc, u yfi.:c0 mn3bsg2 orce between them of 1.0 N. How far apart are they?

  The force between a /uatpqf6 (rs-w8 )b;smm9/(dxhw jg n$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi5 m (6qc5 uylv80e9 ho rhe8gx.+ruulpence a 1.0-N force. If they are moved to a new sep +uxu5c0 h9 8h pr5o6m8l reulvgey(q.aration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed5r ms gn9w2rtj8rln0 mv rv(7hj7mu(4 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 magnin(78u 5l4m9mr2nmvrjr0 rg7 w(jt vhstude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is b yfjo1 ziards zmh 06t(m0481placed 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 electrostam mabj d 4h0stoi0y18fzzr1(6tic force which acts on the charge at the origin?

  Three point charges a + ;3x+ e p9-bewcpr02jzgtwzmre located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 z-t +w3eempzjc;9wbr g 0+px2 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 se7ho faggh1090-k mgqzcond 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 charge of -Q is place0k1a7gh-9omgq 0f hg zd at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);s b*8 bkd:;.np6y 5vdnf bo*gx Q3 = 5.0 nC is at (0,*nkp:xndd vg*;6y8b. bs 5ofb 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0ib x1g.0xqr.a-bfs 1z c.pr0m); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0pqm..100zb-f1as rb c r.gix x). 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 verticests7f6hql me8opr o9k9w y/wbonj5*+ 4 of an equilateral tq46j /n97w of5wk*osl9 8bmh re+otypriangle 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, which are separated by 3.0 m3 gb4 qhm4qvc3gptj jx;gr2ng4mh5/ (. At what point, on a line between the two charges, would it be possible bm4t4g5;p/33 r24qxn(gv chh gqjjmg to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is a0z d2yqz smr(1m 1nz vw.+jgn+t 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 1mzn.jn qs+2rzvz yg+ mw d1(0it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wh siyyk3+rv)0 vxx +kt9ere can a third positive+k3syy+xki0)rtv v x9 charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Aq9.fik- u-iktx 8u h*f 5qv8xgc/v a/i 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 attraction7l2 tvma,u8uhykj9y0 of a fixed j,my 8yh79v 0u2luk atproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spherp7- 3ypz*m* lkxzf pr9es are hung from a common point by nonconducting threads which are 30 cm long. Both3y 9pm zrkz*x7*-flpp are given 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 ha g j fo31 om:a2rb7(brd5,iyxws a charge of +40e. What is the magnitude of the electric field at a distancmo7jr (ibd wbyo3afxr5: ,12g e of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at sw 3 2xtv*ryv;pmmmj (()m vw,a distance of 1.50 m from a 50.0-nvv w; vt (s )2j3mwmxpmry,m*(C charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o u.f1ml98w g 5uv 8e9pfd;myf*zg*nhxf the electrvfz;pm 9x 5yw*g8ndmhf u 89.f*lge 1uic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of 49li ,)m 1 oejk bwtjf+r9k,jithe el9+),krji1b otewj9j,4f likmectric field?

  A 5.0-C charge is 10 /a-zh+f pm wz:m from a small test charge. What is the magnitude of the force exp/ a:fmzhw-z+p erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each havennr88hcg oh9e2gl+a * a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a poinhn9 gc2h*8 roale +8ngt midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0wmp878z8 oqkybigz8, mC charge is placed at the 50 cm mark. What is the electric field at thim8 88,b7ygkzq8 z pwoe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4h g8lpu/4 uas-uk,kj1(0qmd hf yf/ i*.0 mC charge is placed at the 50 cm mark. At what point 8f1hk u,/ *yu4-0kphum/ lgqij adsf(on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC a1n8k 99jw sohere placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at w9nk1 s98oehj the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarfu.5 )*vldut 41hb: .g heilcve of side 0.50 m. The last corner is occupied by a -3.0 mC chaf54.heg*ld:u )lv1 tbvi.huc rge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pvt6e +m(g6 us+j4m6p tn5znb placed at the corners of tt4zjstmg(5 pp+nuv6 b+ e66mn he 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 of 5.0 mC when it is placed in a unifuqy)w*lim9 c-.ufkb +orm electric field. What is the magnitude of this electric fuyb q*-+ f9wklumci.) ield?

  A particle with a charge of 4.0 mC has a m2),t7t gawxuc ass 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 fk42v)ari c0v 0hlxc(field of 6000 N/C pointing downward. Wcf 4i0(kl0)hav2 xvcr hat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isdfpeze4xa9p0:w7c x5 placed inside a uniform electric field, and is suspended against the force of gravi:7a5xw ee49dx f0pcpzty. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC.ey*tnvdm7zn2x4 ( a0 b What is the magnitude of the electric field 5.0 cm fro* xnv2bzedmt 0n4y7a (m the sphere's surface?

  A metal sphere of radius 2.0 c(0.la(wu gw hwliy 6*/ inet,sm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center o ga*l, yw.(wwi(ui/e s0ltn h6f the sphere?