State the law of conservation of elec.qv66fi 1iod3rlm fl9 dok 2as(iq6u 6tric charge.

  Is it possible for two negative charges to attract rft*q1,8 eyxc 9n e4rpeach other?

  Is it possible for a posa j1zi s0zk lh619 hyi)iq;9yeitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p* gh1)-n xeggxrocess the glass rod acquireexxgg-h 1*ng) s a positive charge and the silk

  A proton carries a

  The model of the atom sho :jfi;t t6gx kdhf;x0 ln7+8fxfzk2t0ws a

  A neutral atom alway0wwy(wi n2x 4gs has

  An atom has more electrons than protons. Thef5 bfa6djey *+(7h6uv a p.apc atom is

  Materials in which the elec)wceq5sky0w7a; kjk 1trons are bound very tightly to the nuclei are referrede 5k71;qswk)w ckjy0a to as

  Materials in which the electrons are bound very loosely to thekwpko(nmys. i;+ q*+x nuclei and can move about freelys+;i xnqmo. wkkyp*( + within the material are referred to as

  A negatively charged rod is brought near one end of an unchargedus:cqe. 6 ) 8r(e:tddu*9kjhwxxn ( fa metal bar. The end of the metal bar farthest dk( fru)uj(tn:ex.xdhe9a*6wc :sq 8 from the charged rod will be charged

  Sphere A carries a net positvd-n3x so2fr.ive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sph. dnxs-2f v3roere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elec7apyv*wj:l 3f l lbls:c)-xs8troscope positively?

  An originally neutral electroscope is briefly to5o9uqngs .dw)f 7jsj-qd9 s+xuched with a positively charged glassudo+5j .fsw g97xj9 dqns- q)s rod. The electroscope

  An originally neutral )+qq7 z ljs. xw+,fyqs0zbfy14ki rnhp9 w 0q.electroscope is grounded briefly while a positively charged glass rod is held near i9y h7zrn wsf1j wyk4qi.plqs+0f+0 .bq zx,q)t. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and ex1+sns5f6s qthe leaves separate. Then a negative object is brought near the electros qf5se6x +s1nscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placeoz;jc2 u8l*svd on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolv8ls2cz*u oj;ls 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 the Coulom 7+ 2m4du .r osi)*hvhbkxp6vyb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T0lka 03utxjr 6he first charge is larger in magnitude than the second charuxra06 tkj l03ge.

  Sphere A carries a net charge and sphere B is neutral. Tdravh1k5i5p mp3m8- hhey are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?a-i35dhpmhr51 8mk vp

  Two charged objects atb; kl4npgk 9*m m)peogte .b8+tract each other with a certain force. If the charges on both objects are doubled+4 8*.ogmb e m)bl9pngp;ektk with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutuxy qf;+/9wrcdbqibu725 ea( wal attractive forces of F on each other. If the charges are separated by a distance of d/3, iau+; ( qwfbdye5qrx7 / b9cw2what are the new mutual forces?

  Two charged objects attrac10dp3 vncr7+ x,ms i pkei(ba2t each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their ce1k ascxd2p0n3m pri,(+b eiv 7nters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a disxd je97ng :gk w0(1prttance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?xwn(tp gjd9 0rg7 k:1e

  An electron and a proton are separated by a distance of 1.0 m. What happens e x8tiai u)j2xqp;+/mto the magnitude of the force on the first electron +ux iq a)j/8ip;em2 xtif a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens ttb5q u7o+h+l 3vwzq2ho the size ofqlb+th27zuho 3vwq 5+ 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 center of a square. When a a92/ qfdr)pmcsecond 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 ar c dfap/r)q92me 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 equilateral triangle. Whegj1:.dankwg5qyx3 , ydh ;p3pn a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force o5; yx1,y g3h3:jppdd.qkagnw f 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 vf+csqa (v p;0nector?

  At twice the distance from a point charge, the sttz5wre;my wmmt,51* qx6fah8k lgr80rength of the electric field

  Is it possible to have a zero elauq22q(a5l2r sg0 bc,k sbi(qectric field value between a negative and positive charge along the line j252abir(l2c b( ,qgs0 suqq kaoining the two charges?

  Is it possible to have a zero electric field value betw 9lpl vicj:8x7 xys25x7c vio3een two positive charges along the line joining the two cha37xixv yv5o9 i: lj7c8plscx2rges?

  Electric field lines near psitikg j4j8 u5ht,uve point charges

  The electric field shown +k;2a 7pqa/nk,y qasx

  Can electric field lines intersec8cdnx-8faqty2y gyr m nl7jjb78p +kz-mq:+5t in free space?

  A solid block of metal in electrostatic equilibrium is pla ezxe6) 5.u.o v:jhlz-not adtl97qv9ced in a uniform electric field. Give a statement concerning the electric fie7-tl:uv)vzo 6x..qeozht9 95ejnal d ld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eq vy6vsi4wqa xn/k6+8 w7v+ phpual diameters are each give+7y4kqwi6vwap/snhvxp v86+n the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in s4hid w da986ca region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bl4h ddawi c68s9ock's top surface?

  If a conductor is in;;86rr-b*:d crq lighy6; iz/g qvtb a electrostatic equilibrium near an electric charge

  A positive point charge is encloseducr:w;;yufcm2s l + bx3sg:. k in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abovus+3y: .l g mxwfu2 s;crb;k:ce the hollow sphere has

State three propertievt5qza htvs/ c)54 r*zs of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ish8wdvfw/+ eo)1a xi1a $e = -1.6 \times 10^{-19} \; C$. 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 mo p,u9s3+wzps sre protons than electrons does thp9,p+ suwssz3is piece of plastic have?

  What is the charge on 1 kg of protonx8b1rnqrr63y, rqyj6 i)dc+ y s?

  An atomic nucleus has a charge ;adeo83b(b orof $+40e$. 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+-yb ny)h +sng.0 mC, respectively. What is the magnitude of the electrih-n yybs +gn+)c force between them?

  A 1.0-C charge is 15 m from a second charge, and the force;qvyhvm p*e6 4uwrvb,9 : h.uw between them is 1.0 N. What wv:;h6 *v.w y bu,qrpm9 4uhevis the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.s6lsh9i/ur )n How far apart are they?

  The force between a uv.1qfvfpylp,*m:4 v 5w7h)som )q fy$30 \; mC$ 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 s :h1ccka8hcg)85o fvare moved to a new separation of 8.0 cm, what is the kcc8:ag8f 5o1hh)vs celectric force between them?

  Three identical point charges of 2.0 mC are plac0(x2xr s s *dsg s99vng/+ynered 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 and direction of there2(xv 9xs 9s/y0*+drgssg nn electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the 4f 2pd3gz yzn+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 3p+nd4z2zg yf and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are locr0:dul 6swbl7 ated 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 s67 uld0 :lwbrthe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the0( z9k*se0 ddenb-rm4we r +67kiubnl center of a square, and a second 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 magni70s bizwl-endud r* r9+e6(bk0k mne4tude 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 maq5p, nq*t/j (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the/* ta,np qmj5q net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Qiiffg/uf1dn qt7mo . x( vo;,nry9+0j3 = 5.0 nC is at (0, 0). What f u jv1nff/o x70n9(,tgm qi.diro+;yis the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ve wx7a/q ,(i+vxgxhhp /rtices of an equilateral triangle which measux+(ih ghq/vw,7/xpa xres 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 sepxdgu x 53mx+b1uyc (4qarated by 3.0 m. At what point, on a line between the two charges, would it beyx5 + 4(xducugb1xqm 3 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 origin and a +9.0-C charge is at x = 4.0 m. Wh8 z.hd*ywj9g here on the x-axis can a third charge be placed so the net*yd8g h9 hw.jz force on it is zero?

  Charge +2q is placed at the-1yfifmc 7 3 x(wjefc. origin and charge -q is placed at x = 2a. Where can a third positive charge +q be plaficmwy f(. 7x e3c-1jfced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of d 9;922xz;ebugjna(nm dp ,wf $4.0 \times 10^{12} \; electrons$ 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 attr ..hicv/w(xc2+hhpcrwtie i9- d r //waction of a fixed proton some distance above itwi.(/+i.c2 wht-pdhxvw r/c9rh c/i e. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from aigs:u)2x x)ij common point by nonconducting threads which are 30 cm long. Both)xji xsu2ig :) 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 +40e. What is the magnitude iu9idkrwd .s((3dt4 x of the electric field dkru .x4 w9dts(dii (3at a distance of 1.0 m from the nucleus?

  What are the magnitude and direcihkzj*6/((wv 1 qafx ktion of the electric field at a distance of 1.50 m from a 50.0-nCj/*waqzhv (( kfk16ix charge?

  A 5.0-C charge is 10 m from a 10hscgbk rxp+ ,ac54ky4/u*q; dl apcsmall test charge. What is the magnitude of the electric field at the location of thepkq/uc0l cpgca+hy4 x,4 ;1s *d5bakr test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thta1qki3tqje )7*saz ic1 1 v1ue electric fi11ji*qzqk t) v1e 3aaitu1cs7 eld?

  A 5.0-C charge is 10 m from a niset:j:p 0y +small test charge. What is the magnitude of the force expejns+py:0 : teirienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value cn6qoic *0ht j i:ot(cro599lof 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway bejicc i(q59lncoh 6 tor *o:0t9tween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 3nkbf 8b;iq7qhw y;9r stick and a -4.0 mC charge is placed at the 50 cm mark. Whari97qy 8fb qh;;w3bnk t is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0- b.xuh/yhzei /e 4qi7 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elec i-h4 exz/7/.yhi ubqetric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 k2n)bx+gh 94ngu k rp:and x = 0.20 m. What is the magnitude of the electric field at the po2rpnnx g: h+k9uk bg4)int midway between them?

  Three 3.0 mC charges are at the three corners of a square tifa)p*x;.r,e - hpfl9erdi0of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field xfp9) drf pe.i0re; ltiah*-, at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the c+)d j 0g+bpqa8x cw4w: 8lbnytorners 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 square'jw4+ y:cd08bg+wp t8) alxbqns center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform eli0( u/;-bp) njohtlmvl0c *zw7tycf5 ectric field. What is 7 ut m hbnlo5w0f-pyzc 0()*lvj;itc/the magnitude of this electric field?

  A particle with a charge of 4 kj6k-*r.bin p.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 electri4jj6 30i +hjyx mo,orzc field of 6000 N/C pointing downward. What coizrh 3j6j4jo m+,yx0harge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a c3 z*z(zzbdo) 1 2xg5zbs x(boaharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are th2x1 zbdzzx5 sa*z (og3 (o)bzbe magnitude and direction of the electric field?

  A metal sphere of radius 10 cm c( 3lv):ij aufwarries a charge of +2.0 mC. What is the magnitude of the electric fiel):3w l(af vjuid 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge ofkwknw4 * 4c9(zo7 orxs2ui;js 3.0 mC. What is the electric field 6.0 cm from the centerok 2;47nswx4su wk ricz*jo9( of the sphere?