State the law of conservation/k gh 3qzmd*c0 g1gx-x of electric charge.

  Is it possible for two negative charges tj.l7u;1q bkafo attract each other?

  Is it possible for a positive and a negative charge towjb,8ce;(rrclmvadw a*; 13 e attract each other?

  A glass rod is rubbed with a piece of silk. During the process yqy+gqwvnoxa5od,j440 v h(6the glass rod acquires a (wq5yg o44y0h6ondv ajqxv +, positive charge and the silk

  A proton carries a

  The model of the atom se;ti x qbk:9e) 2wgy*smw0+ uxhows a

  A neutral atom alwaysx*n eq 36yrnyh.b21 hu has

  An atom has more electpam,z ku+p3 y(rons than protons. The atom is

  Materials in which the electrons are bound ver8+ks:-p +zabk(rajfd y tightly to the nuclei are referred t-bfzr+:8a ad kps( k+jo as

  Materials in which the electrons are bound very se psf,*xl* pwk4it:: loosely to the nuclei and can move about freely within the ma4 xsiwk:,*pt:p * flseterial are referred to as

  A negatively charged rod mh 3g3ps-zyew:qpwr)/ smy2hm ;u7 /wis brought near one end of an uncharged metal bar. The end of the metal bar farthest from the ch /23 g )p7yer/hup3hmwyqwmmsz;w: -sarged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrabvmmyjs97t z5f,v)et :z+ z; xl. They are placed near each other on an insulated table. Sphere B is briefly touched wfe7z9j+y)zsvb;v, : tt5mm xz ith a wire that is grounded. Which statement is correct?

  How can a negatively chargedroidc*3 qu.g s r o+,njkzn 0j,+8zlz/ rod charge an electroscope positively?

  An originally neutral electroscope is brieflzh r2 5u2wzab9y touched with a positively charged glass rod. The elz zr uab5292hwectroscope

  An originally neutral electroscope is grounded briefly while f k*-33 bmzeqov)6eub s kpr2:a positively charged glass rod is held near it. After the glass rod is removed, thezrsbkefbm* :o-3 vq )u3 p2ke6 electroscope

  A positive object touches a neutral electroscope, and the leavezzsijf/g66)c : 8p3kc6ehn xes separate. Then a negative object is broughje83 6x nfk cc:)hpgz6es6iz/ t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on as:potgum-z : ir0d 7g+n 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 thetz+rg-gi:u : 7pm0dso 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 Coulomb constant aj40q7/;(v4 fli w59qroqkl wqn;ng s $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. f bh-k6 tu8botg-) )tjk9f s3s The first charge is larger in magnitsh3kob) f )u k-- gtsjtf8b69tude than the second charge.

  Sphere A carries a net charge and sphere B is neutrag+ eds/ ke4i1zl. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betweenk sz1+ege4id / them?

  Two charged objects attract each other with a certain force. If t(lnmn*ku1l0gj9hs q* he charges on bq sku *ln91g l*nmhj0(oth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance 8 sfmb,qi:gktv e 38q(d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are tq( qft:v,8k 8sibm eg3he new mutual forces?

  Two charged objects attract each other wi7*vkhqkgtj1-2nyd+ ftw9a,s th a force F. What happens to the force between them if one charge is doubled, the other charge is triplet +d2hjk-s1tfwq a*yv ng,97 kd, 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 b (wuip q*u7a)gk zfe71+uwmc 9y a distance of 1.0 m. What happens to the magnitude of the force on the p 7)apkcifu q g1m7+ u9euw(*wzroton 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. gyd24dk(g** qr sff4ev3gix /What happens to the magnitude of the force on the first electron if a second electron is place(kvsfgyxgg2 4/3ief*dq r4* dd next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happptk r 5,m(*y9vp:r rn eti*i)gens to the size of the force on the proton if the electron is moved 0.p(5irrry)pn :ti*v 9t*e, kgm50 m closer to the proton?

  A point charge of +Q is placed at the ce868gt4wdbe(sfo b6zenter 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 fordb(bs ee84wzt6g6o 8 fce 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 plgy ifh w;jewx.p;0- j)he, rn7aced at the centroid 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 thej0-p, . wxhe;f7 )jewgnr;iyh 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 vector? engsqwbekr.*.zz*..

  At twice the distance from a point charge, the strengu 1-zp;daa*z-jw 4rgvth of the electric field

  Is it possible to have a zero electri.hkd3nap - azjmz 11x-c field value between a negative and positive charg hj3maa zk1x-.1p-znde along the line joining the two charges?

  Is it possible to have a zero electri ;jzs/cgpe d 4-f0bxih lz-*/di5+wzr c field value between two positive charges along the linhpb5*;-fwciz0+4/e d dz/x-lg zj is re joining the two charges?

  Electric field lines1:j9cnvf:dsq tz d 8+t near psitive point charges

  The electric field shenuvtm2b (kh r( h*9nx d5ua5,own

  Can electric field linesi1;tu1z/ v2ujcp :zwr intersect in free space?

  A solid block of metal in electrostatic equilibrium is plmlqil+k0g t(g9 :6snvaced in a uniform electric field. Give a statement concerning the electric field k(vqn+lm9tl0s:gg6i in the block's interior.

  If a solid metal sphere and a hollow metal sphere6gcv ;smrv/ 4b of equal diameters are each given the same charge, the electric field (E) midway between the cenbs;mrc 64 vv/gter and the surface is

  A cubic block of aluminum rests on a wo l- oomj0g,18jrn 4tbroden table in a region where a uniform electric field is directed strail,1mj oo-r j0b4rt 8gnght upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibr7(- s(m f slj7efrzn4sium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundm)/pxjyh ,82u8 : b bevrinje,ed. As e/bp 8m :unhv,yx)r2je,8ijb compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorsh(c;eb;o)nlbg;0 kbe 07+ yl tp7j m3volzx8 f in static equilibrium.

State Gauss's law.

  The charge carried by one e4n v0v98,e 5bb v8vzziry mr7flectron 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 m8* )g*qop9-szjvnbv aany more protons than electrons does this piece of 8bagzv- v9s*)n q p*ojplastic have?

  What is the charge on 4mvgi slah 4c-r2q5zxtxe at673sx2 7 1 kg of protons?

  An atomic nucleus has a charge of;:.0 i zmvhfhd p9b*by $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, haiqkckb2muces*6 +3 o+ ve charge values of 2.0 and -4.0 mC, respectively. Whack6cmi+*s3k+ qo ub2et is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0ceqf y-r/yl c 8h-0g:o N. What is the magnitude of the:/y -r qoglcy0c-8ehf second charge?

  Two 1.0-C charges have a force between thee5zim*s ;uvte.ul0 4rm of 1.0 N. How far apart are they?

  The force between a ) td(w so-li:t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inik 3hws z6x-q2 azc+aa5tially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what w6h 32k+xc5zqa as-zais the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The ah:8: 1 tjgl ubu6 1jpw3*tusffirst charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What ares3a:jtp6j 8uhl: uu*gf11wt b the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A chargeejm8 eb+z,it4au78 kr of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 uezbk8,iat+74e8j mrcm, 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 origin?

  Three point charges are located at the following positionswj t 37gbo/q,v: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 v,3 gojtb/7w qmC 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 second poyqvp -po6;8fapz1 9d /( ryzucint 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. f9p a prd; yuo1cpv -8z/6yzq( 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 4zpo 9x49nn rgas8.rym, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, s r.8rapn94 9ozgnxy40). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, xo,*m2 ycaz5a3 8 0fa0k voryz0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC 0yka yazzx, 35v*aco2 8fr0mo charge?

  Three identical charges pfza8,/er/8 h a y:h lgn8w6zyof 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chargeswfyalng z8h/, h:zyr86p8/ea?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Ax dc,kh7eg +7n)j chj0t what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrxc ,gk n7cjh je7)dh+0ostatic 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 = /i s t7tp r3xqbow9f.(4.0 m. Where on the x-axis can a third charge be placed so the net force on it ifwxto 73p (r9/tsq .bis zero?

  Charge +2q is placed at the origin atk2:stu*yn (wnd charge -q is placed at x = 2a. Where can a thittk wun(y* 2s:rd positive charge +q be placed so that the force on it is zero?

  A copper penny has auu12, qrbu.gp mass 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 the attraction of a /v788 +gi(jznno iseyfixed proton some distance above it. How far abov7yi/no(ne +z8igjs8 ve the electron is the proton?

  Two 0.20-g metal spheno,+ m5g4 a+ r:eqygwmhaye+-res are hung from a common point by nonconducting threads which are 30 cm long. Both are giveyqmnaer+ + ew5 +4,gh-:omgayn 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 q 5zud0hyu d1ed p(n66charge of +40e. What is the magnitude of the electric field at a distance od 6qd zun0eyu d15(ph6f 1.0 m from the nucleus?

  What are the magnitude idxed8alci3(-lo gi, ,(h;ukl o(4jy and direction of the electric field at a distance of 1.50 m from a e(i ,4 dia ikcylx(d(gol-jol; , 83uh50.0-nC charge?

  A 5.0-C charge is 10 m;/:t u boj+ffa 4w1*yovii;ne from a small test charge. What is the magnitude of the electric field aut*iv4/yenf:i j;;wa1oobf +t the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whatwi.:h.b// lv hgmg,bd is the direction of the electrihig/ wbh,. mv:dg ./lbc field?

  A 5.0-C charge is 10 m from a small test charge.)n4blu; .uqdksa6pf, q a3qn . What is the magnitude of the force experienced by a 1.0 nC charge placed at the location skab3.;.nu d 64 qqqn,l upa)fof the test charge?

  Two point charges each have a value of 3.0 C and are separated bybf ijp ii-ss8m( (qq(8 a distance of 4.0 m. What is the electric field(8-pijq b(qm8is fis( at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and ch rg54z);((xc33zx jgyxkx p a -4.0 mC charge is placed at thxxh5 (zjc r;4gxg (cx)z 3yp3ke 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 mj4 li lcdza s4,y;4bw6v 92omxeter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the tsl44zm6jbi y2 o dxclw9,4;v awo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at xk/w gigi 7y(02 mikc)i = 0 and x = 0.20 m. What is the magnitude of the electric field at the pointiykmgi2i/g 0(c7iw k) midway between them?

  Three 3.0 mC charges are+mc t7m bz;jo.wjdb2 0 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 fiel; w+ cmm dbo2bztj0.7jd at the center of the square.

  Consider a square which is 1.0c9 +fyyl .g8di m on 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 y9li .8+cfgdymC 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 + .qfwnc9 s4qla uniform electric field. What is the magnitude9 wflqq.n+cs4 of this electric field?

  A particle with a charge of 4.0 mC has a mass of:9ctyu d6w:m(+ n nxaa $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of jl63ydp ffcbs58rk* dw3tu 42mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must 2dj 3urf yt6l*wcs8b5d p3k4f be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of l(4aer 6whm 8cq9zy5ya9dn*gi2 9 kaw-2.00 nC. The ball is placed inside a uniform electric field, and is suspended ay2wa9d n5lr9iyaqz m*wgc ek4a 96(h 8gainst 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. pj:6vq vev-s+ j, b.rkf9i 8ytn,9p bn What is the magnitude of thjb vptr9i ,n .s:nky68bvf+jq e-9,vpe 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. What is the tbv qvt- m5)-d7yh)hyelectric field 6.0 cm from the center- d)th7 vbvyth-qm5y) of the sphere?