State the law of conservation of electric chti-7tr9:y*a3vh ozivgg vr., arge.

  Is it possible for two negative charges to attract each otherf55le47yv c 7v)ipwcb?

  Is it possible for a positive anow+a/m pibdyy*o d/-2ek7a9vd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process )gqp i1b(od4x,87k jyd 1e6b m6htvl mthe glass rod acquires a positive charge and thoh ,xk 4jl86qy t1bipmev)b67dg(1 mde silk

  A proton carries a

  The model of the atom sh3tc1 mjhw/ *htows a

  A neutral atom always ha;u u):g5bcgmsz+qdqn yn 1s*o70j b 4ws

  An atom has more electrons than protons. Thejwq wpys :x6o)+i47 m;c *xqix atom is

  Materials in which the electrok -f yiazb- ee6l1ro9q;.f 2wzns are bound very tightly to the nuclei are referred e2 .o-yaz9qeb 1 fz;l6 ifwkr-to as

  Materials in which the electrons are bound very loosely to the efh1x ts)sf:lt o8z,f 0d i3n2nuclei and can move about freely within the material are referreis 23 d z:)lst,tf1 xh80oneffd to as

  A negatively charged rod is brought near one end of an unchargedi5;e6p v pfx1m031golcw7aug metal bar. The end of the metal barg e10ux3ai1cp5m 7fv;p glo6w farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B 4 )5cpne/43ucnja kdp is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is cd4k )5npcj34u nae/cporrect?

  How can a negatively charged rod charge an electroscope po2g n3t:t zhde( u,m e, .pev,x54dwxmositively?

  An originally neutral electroscope is briefly touched with a poh;u(6c7w lcav5n j0vth p*- (q8ebemrsitively charged glass rocul- neae(q8h j0wb (v;rc5pv h7tm *6d. The electroscope

  An originally neutral electroscope is gc-9,zudngu 6blj 5o,p rounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elect cu5,db o,l6j-npug 9zroscope

  A positive object to7 fzrpy .xqey9 :b8)8zguy4mv uches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touc8p u vzyb4 x.8q 79ymegyr)zf:h it. What happens to the leaves?

  A large negatively chae2h1rdjqy 0 .d o-6znmrged 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 touch2rdeh-0 yjnd q1o mz.6 the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cc1 yrdi q;31 .xggod+wonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated bypha ,r+-jsfcm3dt5:vu) t*f f a distance d. The first charge is larger in magnitude thandh+ 3-sfucrp 5)m ,tvt jffa:* the second charge.

  Sphere A carries a net charge and sphere( 8fhzu9l.bly B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between t hlf(. zbly98uhem?

  Two charged objects attract each other with a certain force. I7gcwpv/;ab abphve9.m j5dzje m94 76 f the charges on both objects are doubled wiphbz7c;/mb4a6 ajm9d g9 p e5jve. 7wvth no change in separation, the force between them

  Two charges are separated by a distance d and c:l i/dzz )yr-exert mutual attractive forces of F ):/icdy-zzr lon each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrgw ll2rqm*) nx9gd,q4act 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 centers is reduced to one-fourth its origi*9qn xlw ),gdqrm2gl4nal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. p azb,ni036uwv7 ze8a What happens to the manb0pz8iua,6aw 3 7vezgnitude 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 happens thcx(5hfh1o, w/ uknb+i1 s6/vfsunrx 8h* 4 qco the magnitude of the force on the first electron if a second electron is placed nefr4v (h8xbuh1,fcs wnnx k//5+*hq i16ocushxt to the proton?

  An electron and a proton are separated by a4 tu:0t/i*qztg x pcv9cnj,z6 distance of 1.0 m. What happens to the size of the force on the proton if the ele:ptt0cczxu g/nqj 4ztv i*,96ctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centew b:v u0gf;ef5ud j:v2ad6c2s r 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 square. What is the magnitude of the net electrostatic force acting on the posi cduus5g0vbefafdw:2j 2 :v6 ;tive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triane1d tdj 8.gzle.eu/a*gle. When a second charge of +Q is placed at one of the triangle's vertices, an electrosu8 ldd/ j1a.eeez.*tgtatic 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 vector?-)qixj p 6cgqkr*e.. p

  At twice the distancet0d o6mh bzr64(wgdj3 from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between aa 1 )wrn6jgi:/vuqpk kmj 67j* s3g2mc negative and positive charge along the line joining the two charges?kgpn2g1m jvajsr )mw/:i*6u37k 6cjq

  Is it possible to have a zero electric field value between two positive chaxxr(; kj gg/fagt ;1b/rges along the line joining the/fxg/r( bgxk ;jagt; 1 two charges?

  Electric field lines near psitive pk;xo dvyjl52 *oint charges

  The electric field sq8 :x-lfq *(:kn m5;ajesc apbhown

  Can electric field lines intersecm20p mqm9(9bk2a ur 7/ogwau mt in free space?

  A solid block of metal in electrostatic equilibriu(xoca:ulc +ij d 619bzm is placed in a uniform electric field. Give a statement concerning the electric field in the blz+cj: udx(ib1oc6 al9ock's interior.

  If a solid metal sphere and a hollow metal sphere of equal v ,3 zejuo1qw-gvf*( ediameters are each given the same charge, the electric field (z(f u*jvv31q- we e,ogE) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a u w*rlcel:7/+vv4 g ii:yuscr7 nquj3.niform electric field is directed straight upward. What can be said concerning the charge on the37 rj cu+: wr. nvv74 iql/*seyugi:cl block's top surface?

  If a conductor is in electrostatic equilibrium near an ehdhn(9d dvhs i+67 y )m..yovhlectric charge

  A positive point chazu, af quf. b8lk74q.trge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the 8q.tz l afu,fb4q. 7ukelectric field at a point directly above the hollow sphere has

State three properties of conductors in std4ax2yml7rdmo8 iaid9 kf.6+ atic equilibrium.

State Gauss's law.

  The charge carried by one exzaghs- c:b:b(x70jx lectron 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 charru) jlnk51 vkfn 8q:u8ge of +2.00 mC. How many more protons than electrons doesurnf 818:)uklv knj5q this piece of plastic have?

  What is the charge on 1 u59uhimxl2u 7. jjs (d6dau2dkg of protons?

  An atomic nucleus has a charge )y/wx9eq p/.qypey7 j of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated bycjo60+:qdk+4qz-aa- z rgsnl kxj/.c 1.5 cm, have charge values of 2.0 and -4.0 mC, resp.gadzn 6z /jsq-0+rj kax cl+k4c:-oqectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15akg4lf)-nqyo +c ) )zd m from a second charge, and the force between them is 1.0 N. What is the mag-cy))+lgad)kn f4o zqnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thom; m5u.t9fns e dw2rszo 9t+8py1ru7 ey?

  The force between a q 3p58gvnlzev) 92y hz$30 \; mC$ 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 foj x sp9sw7re9qc,iq98rce. If they are moved to a new separation of 8.0 cm, wei8, jcxs9pqqr979s what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on th(zq;/ar: 3ykw atnd1ue x-axis. The first charge is at the origin, the second (13 :qnrwaytduk; a/z 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 on the x-axis. A charge rq-z/ ,z35nx-urq u oeof +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 force which acts on the charge at the origin?n-zzo3u-5,equx qr/ r

  Three point charges are located atxy l5ig2 lk(:p i1 m4im/ tj5tzwf-4cq 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 the magnitude of the force on the 3.m/i-5 zglcqtp4i2 1tk4j wylmf(i:5x00-mC charge?

  A point charge of +Q is placed at the centeqdlyghxllpv+-)/q 3. r of a square, and a second point charge of -Q is placed at the upper-left corner. It qpgx yl l.)d+qh /v-l3is 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 v0kn- 7i(bgbdd+ up4bc3ynv* (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC vdiuv bc7 (dn*byn304k +b -pgcharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0n8m 0 e3m rgt5z+bt sai7e4z:w nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of thiez4ngrm78 wa50mb3+ s:t zt ee net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateralh+,7t s 5togfqou ;;ub triangle which measures 30 cm on auh; 7ft;u b,+s tog5oq 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 m55+f x2v,;8 od djrumcperd9z . At what point, on a line between the two charges,z5p+ 9d dr2uvrf5,oxj;8ecdm 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 origin and a +9.0-C cey :zj2q (va.mharge is at x = 4.0 m. Where on the x-axis can a third cmvqj(2e. ayz :harge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qrehg45wv)+rvanc w,h em d* *6osj5*o is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it*vr,s6*5 4w*ooja5en+ecrdwg v hhm) is zero?

  A copper penny has a mass of 3.0 g. Azx+p6 zs3uk 1 +t)a/ns 5entmp 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 agains2ke1 +tlhrz9 (ynmv;mr e0c l7t the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proerv c7 l z(9rkm12;nh+e0mytl ton?

  Two 0.20-g metal sphl)-gz r5yz0 xderes are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threadg z)d5 xly0zr-s is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the manhwezzd g5+u l* 6w)8sgnitude of the electric field at a distance of 1.0 l uhes*wz)w+6dz 5g8nm from the nucleus?

  What are the magnitude and direction o4i1d1b7d amkn;cry b .f the electric field at a distance of 1.50 m kr;adbdn1y47.m1b i cfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test c- glk h*)c*inlharge. What is the magnitude of the electric field at the location of the test charg*l ghc*iln) k-e?

  A 5.0-C charge is 10 m from a small test charge. What is the 0w7 :ptqi l4e z /6xveea4md;sdirection of the electric fiel:q7ld/;6pawv zi0s4m eetxe4 d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 7pzz av1wcrti2j o4v (s.4s /uforce experienced by 4szcozv v./1w r4i(a2 t7psjua 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 segrqh d9e0hw*.6fsu* uparated by a distance of 4.0 m. What is the electric field at a point midway between the twuhu fg* wsqr9hd*.6e0 o charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticbs2xh 1p5ftqo; 8x)yfbh)7w yr8 nj2rk and a -4.0 mC charge is placed at the 50 cm mark.fxbp8h;y2)sx1 8ntoqwfr7hy25)b j r 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 -4.0 mC ccs+jcwlyy* ,my5 ay 2pg+ 2/q;stnbo5 harge is placed at the 50 cm mark. At what pointyys / a +oywp22+m jqc tlc,g;s5bn*5y on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placaqhv julj.v00kn7 b)k z3* q2ged at x = 0 and x = 0.20 m. What is t)k2*.jhal gv qkbv0n z3j 0uq7he magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges arebtf 4i e 8iyby0wp4 mb;81uek03jfh: p 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 field at the center of the 0tb yep8fp :4fih4i38y w; ekbu b0m1jsquare.

  Consider a square which is 1.0 m on a side. Charges are pl uxi )f5e/rpx lk43;sgaced at the corners of the squar4ulsfx)e3x5rip g/k; e 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 place+5qxbscq0jvd n3 xs**v-o0 zjd in a uniform electric field. qv jsv0 on5j-*ds0x c3 xbq+z* What is the magnitude of this electric field?

  A particle with a charxysn p9 yk3,sp 04;gqdge 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 isu um b/zoi*2g3//mo ag placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it ti 2m3z * o/ogu/gbaum/o be suspended?

  A foam ball of mass 0.150 g carries a charge7kkor;7e p 6z1et)dk m of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended againstd61 eeko)m; zkrt k7p7 the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm.otp nvv8j ylbc;4 5.m carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from4vm .ltnocy pj 8.5v;b the sphere's surface?

  A metal sphere of radiusy2*d7f2 hiouo6q2aowjf+p+h 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the c+hj dh2 f7u oywapq2io6o2f *+enter of the sphere?