State the law of conservation of electric charpg/h4p)4jv nyd .chdwm9 - 7ohge.

  Is it possible for two negative charges to attract d 2wtp b5c*:tqeach other?

  Is it possible for a positive and a negative charge to atg ,id )ndw 3t asza*u81mat.g2tract each other?

  A glass rod is rubbed with a piece of si*wyw 2irdrccr 1*2: gzlk. During the process the glass rod acquires a positive charg cg1i2 :w*crrryzw 2d*e and the silk

  A proton carries a

  The model of the atom shu,qdvr )we9mp, kgv08 ows a

  A neutral atom alwayeg ;1*j *bdzok4; w/q-fivnm ys has

  An atom has more electrons thayo9i2u5np q y/n protons. The atom is

  Materials in which the electrons are bound v*phwn43 )jwag c4xrb, ery tightly to the nuclei are referred4r,)x c34ah wgnjb w*p to as

  Materials in which the electrons are -7k nc ex7fh.lbound very loosely to the nuclei and can mol h.7c7xn-f keve about freely within the material are referred to as

  A negatively chargedn /a4ja/4 ortk rod is brought near one end of an uncharged metal bar. The end of the metal bar farthesta4ojrn// 4k ta from the charged rod will be charged

  Sphere A carries a net posij5 xa(wxky8lrklf7zh (;ca .0tive charge, and sphere B is neutral. They are placed near each other on an insulated table. yxla l5jx0f 7wkr8ak;h((z c.Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chaws.0 *ymdhf n1nr i(/drged rod charge an electroscope positively?

  An originally neutral elecryajod l13 nt nff+:)2troscope is briefly touched with a positively charged glnf3:n t)l+ 1ad2joyrfass rod. The electroscope

  An originally neutra7 p;1 w-qxbgh b48dcsal electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass ro h-s xd ;a4w87cqbg1pbd is removed, the electroscope

  A positive object touches a neutral electros epcw7szdr -2/ okks6v.l jk2,y)lr5 zcope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch iev2/lslk-cr)z,ywp kdksr27z . oj 65t. What happens to the leaves?

  A large negatively charged object is placed on an insulated l,sa: ko kg6don*rsjccw2; 11k*hts. table. A neutral metallic ball rolls strn6d*wsoj c.;ka kt2,kh1s:lc g1 o* sraight 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 final charge on each ball?

  Charge is

  What are the units of thp vjg+.c;b s6ye Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The 0b;w 3 ru.zyyifirst charge is larger in magniywbrz .0;3i yutude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They a36ygg 8x+kv nyw/ 58votgbzu-re placed near each other on an insulated table. Which state+vy6u85n gxyokw b g3z-/v 8gtment best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onl6b1*0p hg.q8vdt:l u rc g/xa both objects are doubled with no change 6tglpq: 1 *u/ah rgcb08.lvdxin separation, the force between them

  Two charges are separated by a distance d and exer/.k ws qbyws:,t mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutu.:ys bk/w w,qsal forces?

  Two charged objects attract each other with a /hoabjb53-x lforce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepb-bo lxajh/3 5aration 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 distanp / w601xz2gvktxtlgb o .)x6dce of 1.0 m. What happens to the magnitude of the for)t / bg.kwd xox0vtz26xgl 61pce 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. W:vzo3twl/ks h3ri .hf4u6 .q jhat happens to the magnitude of the force on the first electron if a second electron is placed next to the p3 4h.l.zhf3trvjiu s /:w6oqk roton?

  An electron and a proton are separatedsp7ft)z -s6 qb by a distance of 1.0 m. What happens to the size of the force on the protbt-q sp6s)zf7on if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squarf5 /omt2n4fll po9cb(e. When a second point charge of -Q is placed at one of the square's lbft5n2c9/mpo4 ofl(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 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 6vki3.(u-cw 7ns j7 ga-q f8usar jz3ncentroid 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 plakjif sv uru(zng .- aca8 n7-q6wj37s3ced at one of the other vertices?

  Which of the followinecn /e w/zw qrtv0x5w4w7+w;ng is not a vector?

  At twice the distance qb3nb e55/awrfrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field valuejpziaup fj-nx)88x2, fdu y/4 between a negative and positive charge along the line joining the fj4 y-8ix, afuj28 /u xzpdp)ntwo charges?

  Is it possible to have a zero electric field v c1+j:h l7b won1kb7zjalue between two positive charges along the line joining jjb:c7wlz11 k h+n7bothe two charges?

  Electric field lines near psitiv.(qgaoz3 vjud x/7vd+e point charges

  The electric field showndqi mb9.d 5g9 fkhf5o.

  Can electric field lines intersect in free spak-gs u ba-kru.t+ w ,vo),bog;ce?

  A solid block of metal in electrtrwjtn / *tqk/fj:+ lhf.2xj 8ostatic equilibrium is placed in a uniform electric field. Give a statement concerning the nhf f/t jjtq+t/kr8:2 lx.*jw electric field in the block's interior.

  If a solid metal sphere and a hollow mq+ mff61cs mif,p8n g w)id kw+qy*.-retal sphere of equal diameters are each given the same charge, t.nwf6i8-gf+ m p+cqswk*d f)yq,i1m r he electric field (E) midway between the center and the surface is

  A cubic block of alumin th(hrg8(.9 7je*xys8yu 3v+varso b dsr/ qu5um rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concernin 7 gau(s95o8br yds/uh xy8r*s.vteq(r3 h+ vjg the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cha6 qnpd7ez0 v1vrge

  A positive point charge is enclosed in a hollow metallic pp 5dlhk+x85isphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the holl5pp58 lhxkdi+ ow sphere has

State three properties of conductors in static equilibriugzuz /mz *12cpm.

State Gauss's law.

  The charge carried by one electron iakol p0 w48 z(blpi8r7s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge ofkxip5 (6j,fzbh 7zhq/ +2.00 mC. How many more protons than electrons pzb7,j/xk5hfzi6qh ( does this piece of plastic have?

  What is the charge ony*i.ws9tsa - b 1 kg of protons?

  An atomic nucleus has a chargb n4qfr9j lk2:e of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.51d 6dphg65; jsoccs1x cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between61gph d x;ocd51ssj6 c them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 19ls)xr - f:pce.0 N. What is the magnitude of the seco -fxsr9:l cpe)nd charge?

  Two 1.0-C charges hai(gog9wpjt,g 77kf ( lc apt)*ve a force between them of 1.0 N. How far apart are they?

  The force between a t0-tb1m ez.rbps* 2so $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiel1/cl-ut eit02qe)s ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the eleteu 1i2/-s lq)tc ele0ctric force between them?

  Three identical point chargesvxea a* jq44qh6z;sr3 o. rid0 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 magnitude 0qhqa vr6eadxj.irs 4o 4z3*;and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placedrq fle7l,k:xyy* + 6cl 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 lly: 7 qk,*6xelr fc+yforce which acts on the charge at the origin?

  Three point charges are located at the follobhbouvk -:-kq 58fq +z9.y obdwing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC-9+qodhuq by k-b 5z .vo:k8fb 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 second,bnfa qp(aj1xa *v+f) point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of +,va(*x abf fp1nja)q 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 is at (0, 0.10 m); Q3 = 5.00d.p 2s5 ao6;julyl zn nC is at (0, 0). What is the magnitude of the net force on the 5.0 n;yopnd0 ls 52.zluj6aC 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 i .ni+c*fzc5m -y /ncfis at (0, 0). What is f5i*cnfi/z m c+yc-.n the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCypwj6gz: +6icsci :p* are placed at the vertices of an equilateral triangle which measures 30 cm on a sideycij 6p6+gzc:*: wip s. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whi +(m i/3zoju cs.kukp/ch are separated by 3.0 m. At what point, on a line between the two cha. umpcj/(ziksko / +u3rges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origiab34qwr:o c20c/p vhfn and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third 2/q p 4c3frabh0ocvw:charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2u2, qu.ce ;wk f atasq+u-.kq,a. Where can a tcqu2;q.+.t,a,ku kswa eu -qfhird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g d fdp,x4d(x8x1mryb; . 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 v- l9p17r7* szqqscfyattraction of a fixed proton some distance above it. How farvfz-yl 77 qss 1c*pq9r above the electron is the proton?

  Two 0.20-g metal spheres are hung iox4 g3h9jt i3:qe9, x+wjvun from a common point by nonconducting threads which are 30 cm long. Bxt3jn9e9qxv ih4o i 3g +,:jwuoth 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 has a cha r9e 5.b2gmk,fwzn)ourge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fr)2e nzf 5.,gowm brku9om the nucleus?

  What are the magnitude and direction of the electric fi/;uia )ujve m+eld at a distance of 1.50 m from a 50.0-nC chuja) i;um/ v+earge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni mfpd 4etvt-bbphhg ;. +tg512tude of the electric fiephpb .hft gb12v dtg+ -45mt;eld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the wvpm790hqf.qcnjt 3/ (av z m2direction of the e cm9phzq0 fj 3m(t2nva7v/q.w lectric field?

  A 5.0-C charge is 10 m fromipr 2 s,)lop8qs k2.km a small test charge. What is the magnitude of the force experiencppkmqlo2),rss2k i. 8ed 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 distance tw52d g ;e0gnqof 4.0 m. What is the electric field at a point midway between the two charge0we g;2tn g5dqs?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and wk15e9i5k o )x/xjp xta -4.0 mC charge is placed at the 50 cm mark. What is the1xjwop xk/xt5i )9e5 k electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark /3dzl/ 6,ggh7j c jfbzof a meter stick and a -4.0 mC charge is 6bcgzj, zl3/fhgd / j7placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 2xmhq,j-m pm,mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the e,m hmq2 mj,px-lectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50dgi8 e; +*b* pxkx:tqf m. The last corner is occupied by a -3.0 mC charge. Fin8 +k*g;fq :iedxtb*p xd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Cha96au9nkamu au y:g;f,vh+/qarges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); /v: ,9a9uaafu 6k+nyq umg ;ah-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 cgzpg9 j7b 9+l80 bnabeharge of 5.0 mC when it is placed in a uniform electric field. What is the magnit9 bbgg08azp j7 9ne+blude of this electric field?

  A particle with a cha4v lxf33tj lg(rge 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 of 6gkf:cm)p. mmr5l16 irv y, hz1000 N/C pointing downward. What 1fyi m5c.mlr,)kr 6g1mh:z vpcharge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g casc)hl 4m,ac-j5ket, yrries a charge of -2.00 nC. The ball is placed inside ehca,s,lmc5j k4)ty- a uniform electric 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 isj : ycftf0(p9z the magnitude of the electric field 5.0 cm from the sphere's surj:( zfycpft90face?

  A metal sphere of radius 2.0 c uqz9a hekj 3jkn-;25cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spherj;uckk9j zq-h n23a5 ee?