State the law of conservation of ele qy9ssyl k125s/lbun-ctric charge.

  Is it possible for two negative charges to attractw+5pe*q:gpnve2lc ugo0 ,q j; each other?

  Is it possible for a positive and )t5ylipz2zh,1s za0 k a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During thsv ny cu+hq37:63 tt)xxicc3 ie process the glass rod acquir7t vnic:6t)x3 yqx +i 33cshuces a positive charge and the silk

  A proton carries a

  The model of the atom s9kjzhdoj; 8*fl-: vrx hows a

  A neutral atom always/r0fnmfj (6 qp has

  An atom has more electrons than protons. f, uw-pxg6y(u The atom is

  Materials in which the electrons are bound very tightly to the nuclei arn x xxdhk2w326l n.-vpe referred to anxn xp2 k32wv6xhld-.s

  Materials in which the electrons are bound very loosely to the nuclei andnty3,rx3ug* u can move ar t,u *3y3nxgubout freely within the material are referred to as

  A negatively charged rod is brought near oqiwtrra9b h8h 030h9 rvxf t)j5((yt63xtkrp ne end of an uncharged metal bar. The end of the metal bar farthest rf)jtt65hha (rk(8t wxb0 9yx30r vihqt r93p from the charged rod will be charged

  Sphere A carries a net positive cha3l+ah/d (pscarge, and sphere B is neutral. They are placed necha ld3s/+ ap(ar each other on 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 ehy:mr.zc.dp;qa-u -7kn gm0klectroscope positively?

  An originally neutral electroscope is briefly toua*a )xq+xr kq5ched with a positively charged glass rod. The *5qxr )aqkxa +electroscope

  An originally neutral electroscopkza quo2nc131 e is grounded briefly while a positively charged gla n2ok3 azuq1c1ss rod is held near it. After the glass rod is removed, the electroscope

  A positive object toqb64 tmv4,vo4k:en eyuches a neutral electroscope, and the leaves separate. Then a negative object is brought near thke 46e o4tynvm,bq4v :e electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed o.-l7ro6 j u ph7- an4oansnq4jn 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 b- -nroaq 6l4p7hnsjn. 4j oua7all, 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 the Coulombd;ajp5 -sqz 7d constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largergqu ae4 rq7w6.vv.6 vr in magnitude eru.vq v74 vw6qa6.grthan the second charge.

  Sphere A carries a net e fae4xv7o 0.acharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describesv.4o7fax aee0 the electrostatic force between them?

  Two charged objects attract each other with a certaincio. bdzyabp;b5. 3qwu-akip)2ao; 9 force. If the charges on both objects are doubled with no change in separation, the force bet2;obka3a5ybbzw .;c)ui. 9 aiqp op-d ween them

  Two charges are separated by a dist(df5 7n 5vrljlarz18tance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of lndl87j azf5rr t1v(5 d/3, what are the new mutual forces?

  Two charged objects attract each other with a forj( 48xal+pt-b2z gr vvce F. What happens to the force between them ifb+ ljxatrgpz4-8vv2 ( one 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 separdc xvsgdu*flm:0 n1g2, * e/bbated by a distance of 1.0 m. What happens to the magnituv /n d,s:cufmg g1e **bd20xlbde of the 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 happenf1 xu4tw b;0gw-c*j93tihse as to the magnitude of the force on the first electron if a second tiwuh1c4;3etfa* w0 x-sjb g9electron is placed next to the proton?

  An electron and a proton are separated by a distc56d)va:q7lhiunmdl ,x1 o+ uance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the nimq)oua dv5,ux:ch7ll+16d proton?

  A point charge of +Q is placemo9di,e n+)lqd at the center of a square. When a second point cha no+di )lm,9eqrge 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 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 c-b xx qc eupj)e/1l-8yentroid 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 the other vertxbju- yqx) l81/e-pc eices?

  Which of the following is wdd ,-c ;dp;dqnot a vector?

  At twice the distance from a point cm7 h hi lku j(wau0at802q6oy/harge, the strength of the electric field

  Is it possible to have a zero electric field value bet2,yo*i q9f1ro(:xd . lefsum1mpf1p hween a negative and positive charge am1 2opsmf: d 9rp1fyi, .1oqfxu*(elhlong the line joining the two charges?

  Is it possible to have a zero electric field value betwuw xpp h*:w a76z2f*ikowc3e)o:n+ateen two positive charges along the line joining the twnhoa ::z )w2+w*kpt7* 3pf e6icaxwuoo charges?

  Electric field lines near psitive point char7zyfd slk:w9 vq7i)2oges

  The electric field shw s hdwre0s;*- a2u6/vjwiww ;own

  Can electric field lines intersect i6q5v novrtl3 +n free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform eolety71( i tbl 6/aqtnj i+hw;q1ru 1)lectric field. Give ajbtqy6 i1l(71 wt;t / nl1uqae)+orih statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacjd; b1)b99e ojrty3 sph given the same charge, the electric field (E) midway between t91;jdeotryb3 s9 jb)phe center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a ,4 m+g dc w)hhyf(f;ojuniform electric field is directed straight upward. What can be said co(fmwfc;4hg+ ohdjy, )ncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargh6;b1z8z43nlt0blp zs r6w w ne

  A positive point charge is enclosed in a hollow metallic sphere that isbyf rb*a b r+kh-m9i8j0l 7tgslut0.2 grounded. As compared to the case without the hollow sphere, the electric field at a point dir.ujg+*y-20rb908las bfittbhm lk 7rectly above the hollow sphere has

State three properties of conductors h 8b6ziv-jhi.in static equilibrium.

State Gauss's law.

  The charge carried byp.v m nag:3jm* one 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 +2.00 mC. How many more protongadx(c;v*ca p0n23wz s than electrons does this piece onpx v3ac0d*cw;ag ( z2f plastic have?

  What is the charge on 1 kg of protons?l3g i2t z)gw+xv4qps,

  An atomic nucleus hal arzf)gc/ 6zc-fim)cqo1,dh 3 zl 0(zs a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sige9g (v/ uu+u )sjfm+eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What ig+sjmu9egi) (uu+f /v s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second +hl6e a(nrv2ncharge, and the force between them is 1.0 N. What is the magnitude n2h(rvl6nea+of the second charge?

  Two 1.0-C charges have a force between them of 1.0 Nkn4 f/sckvsh4 yr3,4v51n qla . How far apart are they?

  The force between a r,l aj8/ )c/w fn5kiict6.uma$30 \; mC$ 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. If they ar zq3 vr ee, xo,omxpn c;9,s+w:+ul1bie moved to a new separation of 8.0 cm, what is the electric force betwee,muvbi9,or ,se1zqx ;:wxlepc3+n + on them?

  Three identical point charges of 2.0 mC are placed on the xk pf. 1ssrl56scn2mm3 -axis. The first charge is at the origin, m .skf35mscr16ls np2the 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 the charge at the origin?

  Three point charges are placed otr+/uvvc5k0p(au w+h n 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 e +v5k+uaptu(vwrh/ 0c lectrostatic force which acts on the charge at the origin?

  Three point charges are located 4wc jpx6powwx 0+r ao*b 9yzzx+g+m64at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at cwbwm0+pz6 w 4x+r4j+oo*z6px9 yxg a 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 ce fd:/n/pjyvwal+5 n5m nter of a square, and a second point charge of -Q is placed at the up+ny:jf5d w//l 5pmavn per-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 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 = 5.0 nC i53 b1t:lfq,6fh g0mp evjww8we8jz*e s at (0, 0). What is the magnitude of the net force on the 5.0 nC q8t0 6 p8zwe*,je : v1jeb3hwff5mlgwcharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is ao5xc 0(2r37vymv;mpnvs z qp0u (mhd /t (0, 0). What is the direction of the netr so ((xmdvvmp v2yu/h0q50 cp7zmn 3; force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticesc8bl qrw9mo2jo9 ca82 of an equilateral triangle which mj c ocwrm2q82a8olb99easures 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, whzxl3fm :k/u3 sich 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 t 3fm3zls:kxu/ hat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the ori vma8 .:h(n eo:m:n3-lhx( s0fgowkrbgin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can :e (k lmswghxf8:a-0.r3o(nn hvo: bma third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargez/2q4gjvl u3yco+v/ u6i :llc -q is placed at x = 2a. Where can a third positive charge +q be placed so that tciuo +y lz4lc6 /qvgu3 l:v2j/he force on it is zero?

  A copper penny has a ma,idd nhos(s5)cdr ,cu*gl ;p(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 gravity by ttd62 dc.kg pw1he attraction of a fixed proton some distance above it. d6k gw cd1pt.2How far above the electron is the proton?

  Two 0.20-g metal spheres rmp5do6 8k8 l6ip0jmkare hung from a common point by nonconducting threads wh6j mkkr8o8m50ld6i p pich are 30 cm long. Both 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 charge of +40 tz7l4y;s(cwp38 v1lr+ csf8pfc) p uoe. What is the magnitude of the electric field at a distance of 1.0 m from thecfrl14vpc 8uols p w8tz73+ ()pyf;c s nucleus?

  What are the magnitude and direction of the electric fiel qp8 *wo00gwez) dl,ood at a distance of 1.50 m from l p,0zw08oqodew o )g*a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thewcv0 gej20qgcoi 7il 0):h 2ze magnitude of the electric field at the 20gw 0el c g:02hiiqz)7e vocjlocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wf ddd, 1)khva ;.dldix,88w3sps3 ite hat is the direction of the electric fielisda.pds3w, tx d18l,h3 ki d;d 8f)ved?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ie8zkx 2 c//mj 1+csadv l9h/jforce experienced by a 1.0 nC charge placed at the location of tjhc8z/l19 die/ sa2cmjkxv /+he test charge?

  Two point charges each 2u mm-,/h+bclg:i jub2xyu*8 w+eqtaqo s/i4 have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mh*u 2iu/mqwmi j+clq,s eu-toa g/+b:xy28b4idway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCe+w/tec6g be 5h8u-x k charge is placedthw k e-ceu/b+ 6egx58 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 stick and a -4.0rbd*z eupj5 n rxkm,)-a0hkc y ;t10)n mC charge is placed at the 50 cm mark. At what point on a line joining the two cytm;a)1 nd5jc r e)*zkxk -br0,nph0uharges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 :msbf3sta0: o mC are placed at x = 0 and x = 0.20 m. What is the magnitude of thb3 f0ssom:t: ae electric field at the point midway between them?

  Three 3.0 mC charges are at thew(3yanr d3z0u,tkq ,q three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cente r,a(3wkytq qnzu,d0 3r of the square.

  Consider a square which is 1.0 m ono o0ko vsxk:;; 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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is :;oo0;vsox kkthe 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 uniforg;hyto40 jk(3iavbs+5ly tc 9y94 wkg m electric field. What is the magnitude of this es95ahctkyb( t+9lgwk;o43i yg 4vj y0lectric field?

  A particle with a charge omz x7/tgo:6+pdodm o6 1ur6t wihog2 ,f 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 nt-l9ftlg, , xan electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to bell,9txftg -, n suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed ina6:wamza d dq.ah-j+w lm)*q8side a uniform electric field, and is suspended against the force of grav*lw+ q.a:)dm - jd6zaam 8wahqity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrie t,jy48sz7kf jus6a0ys a charge of +2.0 mC. What is the magnitude of tzjk y4u76ss ajy0f,8 the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. ec0s8ok8e *omqu n9s 3 What is the electric field 6.0 cm mok83*0qusense9c o8 from the center of the sphere?