State the law of conservava pa+jz.x (zse / vy-bjl/6*xtion of electric charge.

  Is it possible for two nt*roc pv m8c.1egative charges to attract each other?

  Is it possible for a positive and a negat 1t7kfacws6.sad s5o lw9y 3u8ive charge to attract each other?

  A glass rod is rubbed with a piece 1 v+dptq; svpk1u;/uyof silk. During the process the glass rod acquires a positive charge and t/yv tuv ;ku;pd+11p sqhe silk

  A proton carries a

  The model of the atom sved52 ss( idqv0w, 6kf qskbp9ob2-spx7 5mp,hows a

  A neutral atom alwayc v qsaj1n6 u;4t/unloud.::es has

  An atom has more electh- wkoohefv pu0 2x:wkhk117,rons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are l;hyvqz2b:1 6.f goraz(zln+referred to ag+rb1ol:z (;hna.qyf z 2l6vz s

  Materials in which the electrons are bound very loosely to the nuuzogcj ,2 9, h iwj47(amm0nduclei and can move about freely within the d09i2g4,hc7n uwj(m,jzm auomaterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thckx 1q6s1l rq er c,0s9qtjkbe8sj tox2:7h),e end of the met x, )hr1cs8k9 t7b lqrek2qeq:6c01stx jsjo,al bar farthest from the charged rod will be charged

  Sphere A carries a net positive c+jf3b lbkoyu; 2v3y8mxv5lz/+em eq *harge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which sm;kb y*+/+l3vj 3mel5xbozef8v yqu2 tatement is correct?

  How can a negatively chah-wp b 99tutyjkic)q0bu g89ypu 9e*- rged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively , ft8rm2;* qlybmf tu0charged glass rod. The ely2mumfl r0;q b*ft8t,ectroscope

  An originally neutral electroscope is grounded briefly whilnkb p -7:dydbf)pe)u6zu ;f z*9s8 civw-wb2oe a positively charged glass rod is held near it. After the glass rod is removed, the elece-zvdyp kp 7bidw:2 f8ub) obsn* fz9wu;c6- )troscope

  A positive object touches a neutral electroscope, and the leaves sepa nq a logrmy6+3z*7acynj7,e6rate. Then a negative object is brought near the electroscope, but does not touch it. 6n e,oga7l qm +yy*jnz36ca7rWhat happens to the leaves?

  A large negatively charged object is placed on an insulaxuuvz8 d6x,g; ted 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 tv;6u x d,xu8zgouch 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 i7lc +jh89ekd constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanc4x8n aqsvf f9z8h m6n/e d. The first charge is larger in magnitude than the sx8m q 9avhs68n f4z/nfecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placedcrxt+ d :v3+nq5pg1os near each other on an insulated table. Which statement best describes the elecdts:ocqgpx+5v1n+ 3r trostatic force between them?

  Two charged objects attract each other with a certain force. If the charges qgy*y *h0 ak(yon both objects are doubled with no change in separation, the forg y*ayqkh0* (yce between them

  Two charges are separated by a distantmji*q(f qd0f:f0a u,ce d and exert mutual attractive forces of F on each other. If the char(f*j i0q:udff mq t0a,ges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eace-s: :sk *e m0olg4bmvh other with a force F. What happens to the force between them if one charge is doubled, tk4s: lgm:0ee *mb-os vhe 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 separated by a distancv kukt2r0;8l pe of 1.0 m. What happens to the magnitude of the force on the r;2v8k ukp0 tlproton 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 to axq. vm0 c-9yjthe magnitude of the force on the fiqx.0a- c9vjm yrst electron if a second electron is placed next to the proton?

  An electron and a proton ,lhslfbr 4f6wu+7mux8ue p ,2 are separated by a distance of 1.0 m. What happens to the size of +euruf, 284 s mflu 6whblpx,7the 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 secjs,p qnmyblc+ vuq -w;3,p 2n.z)qkg:ond 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 t kjwzqcn ;mn:l+. q2 p-3ypbqg),uv,s hree 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 tria eh5uv) 88vb8gbynxg/6f; x 30bolrvzngle. 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 o)vvlg3ehy6xo ;b0 u gbfn8 / xz88rbv5f 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?t6/kvqrsul we.*h 9ll)z3)i-uutsi 7

  At twice the distance from a point charge, the strehrc:ahcf56 xje;v 0+ungth of the electric field

  Is it possible to have a zero electric h)1 t;a vkp(psnuww+: field value between a negative and positive cht 1uh: +n;swkappvw)( arge along the line joining the two charges?

  Is it possible to have a zero electric field value between twssm/z:o+ pqy1o positive charges along the line joining the two cho1s +/qy zs:mparges?

  Electric field lines nearyy-dc ene5l-jx )w(w9 rqs4e : prg4s, psitive point charges

  The electric field show:f4 bkwpwm+k7g1ui 8ag,omxz0,g pf.n

  Can electric field lines intersect in fexz6lvbz -+sjz gm snr6s+05; ree space?

  A solid block of metal in r0jbagjw )80 kelectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interior.a wbkj800 )rjg

  If a solid metal sphere and a hollow metal sphere ofc3j10qdb6+e t )eujh j equal diameters are each given the same charge, the electric field (E) midway betwqd6)b je h0ct3+ 1juejeen the center and the surface is

  A cubic block of alumin o l8m8*j9brf eb)srp4um rests on a wooden table in a region where a uniform electric ps lbe 8jfr4br 89*)omfield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elecxu)sdin8w/v7h ac :e5trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a ho27azefj nzt+qfh ; 97hllow metallic sphere that is grounded. As compared t htnh+jafzqe ;9f27 7zo the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equili0*p qe-aff x-jas, vh4brium.

State Gauss's law.

  The charge carried by 99l* mefjg 14 j7wf-mtaq7 tssx /mc*uone 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. Howe8c k1kyw44n g many more protons than electrek1 4k8y 4gwcnons does this piece of plastic have?

  What is the charge on 1 kg of protons?mp4c uv*2 /sgiu+*is a

  An atomic nucleus has ax7ji9zcq 4mgh yr32 +wdlj( u- charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatezrm.; g :fl(, ntgb0pjd by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force(l0 .gbpj;,t :gmzfrn between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 phbc8j.; ndz;sf r 4m2c- tv*yN. What is the magnitude vhn szj 4-*m b.;2dctpf8ryc; of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How o*v+z3q( hdbezd) 5 5x8vyqtw far apart are they?

  The force between a f) teuc/eo, / p9d6xme9q.yu mj/ -epw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expqkj8nq *9 )i9n+:re3wp p0:m mmpgjrzerience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the p9e :8: + 0ik9zrp njm qgqn3*jmmw)rpelectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha;jz l+ tdryird:u;l1g+e6,ik rge 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 the electrostatic force whichyd,6+jzd r rel+i1:u;ikl t;g acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge uufvmyo;kt53 m (7k;jd5 ,tqd 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 force which acts on the dq;o5j y( 3,fdu;tmu7tmk kv5 charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xaz pf;dq)7jh3 = 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);hdq fapz j73 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a secon-h: qi:4igu 5puy0q.pv y,spdd 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 0,:gdsp5 y -q:upih.yv4qp uimagnitude 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); Qj:4f*k fk9 tfn3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chf9 jk*nf:kft4arge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC 7x1q5nx70qw+ *h lmf6zmshiy is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dirmw+qlz17q x*hxsi mfyhn6 5 07ection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterkm )m*t e.g; c-v iae67qiux5fal triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the q7mx)-ecf 5aim.6; gkut* i vecharges?

  Consider point charges of +Q and +4Q, whi ;,lyl cao,qfz+ej6) 7fo /ghwch are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to placee ,qha),cw 6loyofz 7l+g/jf; 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. Wh /r:*o )izzzy svs(mkbyu64-oere on the x-axis can a third char6oz( /-)vsr*uyzbzyskoim4 :ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and+njl fm*22 vzd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it ild +nv2zjmf*2 s zero?

  A copper penny has a mass of 3.0 g.,h ym2bm9g4 pt 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 forceskz9 y wb(18ehu 7;vnv of gravity by the attraction of a fixed proton some distance above it. How far above the(8n ku7 hbve1 yv;s9wz electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting 5hh 2lswq6mu v1l-z k-threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads ism-vu llqz5-1k 2w6h sh $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a char jw,4mz-(toqoq 1*mufre9sfn9zj0 c*y.* drmge of +40e. What is the magnitude of the electric fief qnryq 9,u4rz 0*s 1 *owcmj*etdfjo-9(mz .mld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista3;qi.algmlz9i 4h7 i+s nf1hsnce of 1.50 m from hsz;f9ih1gim+ l 7.3l4nqs aia 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mas/k p5vh ,xb0fgnitude of the electric field at the lospbvxh,50 /fkcation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thehc qkek-ialy 9..g u8:ll t(om)2ohl 9 electric fiellm :lihgco9qa(k)yk.2 ou tl9h.-le8d?

  A 5.0-C charge is 10 m from a smby m z99yrjyl3 awp i2w;g0;;eall test charge. What is the magnitude of the folpa e z;90;i9ymjg3wyw yb; 2rrce experienced 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 dilzg:d7 6ejv , iu-k(zbstance of 4.0 m. 7k, zzdlje ui(:gvb-6What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mal q,+1j 9twfwprk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 301wqp9,w+jltf cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a5/7icmh0x .il :k hvllu7n9xw meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the t.i7c:wklh i7n mh0 lv5u9/xxl wo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = y )y1xxomn/lxxx5jyd b4oh+ s 27z5(p0 and x = 0.20 m. What is the magnitude djsxxmlyp5+y b ) 2o5nx1 o(y/7xxh4zof the electric field at the point midway between them?

  Three 3.0 mC charges are at the t /sq j/uy5zrzb+8n;-x v epzf6hree corners of a square of side 0.50 m. The last corsrnu z+jf/ xb;zqz/ e-vpy568ner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at19u5x ol,m n njpcf79 -r1qbby the corners of the square as follows: +r1n-cy1lnbfj97b9, qoxm u5p 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 inji0 xu)9j+ v(6cmu 7 mrbw,pzt is placed in a uniform electric fielvj() jn zc9 ,rw u+607uxbmmipd. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of cjr2+lww aq3+ix k51e$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.9qzha2x5bmn vog n;* 8120 g is placed in an electric field of 6000 N/C pointing downwar;5x8z*mgnno 9qv2hb ad. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chgd-(- b)m +mu mvf2nbfarge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspendedumdbm fnb2( g+vfm- )- 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 is the magni )1vj obbzn 2-,f-dxmqtude z-xfdnmjb v2bo),1q -of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries autxdcm b*)d9, charge of 3.0 mC. What is the electric field 6.0 cm from the center of the uc9d*m tdxb,)sphere?