State the law of conservation of ele)bt+rears)dt zj*v4l . v3t l:ctric charge.

  Is it possible for two negative charges to atjd76xo/a47jjt kroy5tract each other?

  Is it possible for a positive and a negataoj:fik )08fa2 d- wnoive charge to attract each other?

  A glass rod is rubbed with a piece of io- wkf0d ,l5l)k/5s kno4 o,n) mstrm vxyc6:silk. During the process the glass rod acquires a posii)6ck0l:5) w xron l/o4,k,vtdmy-k s5fmons tive charge and the silk

  A proton carries a

  The model of the atom shows grgsq,h+;nyoc3r-bdp94c4q bk 5 s 4oa

  A neutral atom always 4tx7l:eo.t.7yy xvkx rz0 h5z has

  An atom has more electrons than prosl .;w-uvvw 2 uq-m4nr-ibip/tons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referrifr .::idi9 ucl46pf 5drc+tjed d jlc6:: prifu+dri.if4 5tc9 to as

  Materials in which the electrons are bound very loo 6k-xkvw zbc98hyd ;9fsely to the nuclei and can move about9kdbc9 8zyhwf 6k;v x- freely within the material are referred to as

  A negatively charged rod is brought near one eeuu.c(abl f8o2) haj u(b+) k4ak qiq5so,i-dnd of an uncharged metal bar. The end of the metal bar farthest from the charged rod will beo(h.8q2do,4) -bfa5 kuqbl us+i)k (ui eajca charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plmj5 (oi+:mc bwaip )rsoqz 77gd *sr3;aced near each other on an insulated table. Sphere B is briefly touched with a wire that (*7mib 7 ocsd)aw;+r5:sozgjrq3p mi is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopeou vk( j0-:u r1wmlc;r positively?

  An originally neutral electroscope is briefly touched with a positively char +lkrln*kitsl8* l e;3ged glass rod. The elec lne*s r3 llkkt+8i;l*troscope

  An originally neutral electroscope is grounded briefly while a pm/sj 1v qi/v9 :1+j ufrn dxy+6dzvpw*ositively charged glass rod is held near it. After the glass rod is removed, the ezi djfn* 9uv+ jyp :s xm/rwd+vq1/6v1lectroscope

  A positive object touches a neutral o8r2 sx:9jbj4 5g c4rld wy/brelectroscope, and the leaves separate. Then a negative object is brought near the electrb sg89lw2rrb4y4 :/ ojcr xjd5oscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral y6v n0pa;7*5hv gbgmpp4z;tw metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls alo h wgmv;vtp4zan 6gp7* 5bp;y0ng 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 Coulmi4pm e ua823rxri,m.:nok8bomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. m(y icfj.v4fkle:) 5n The first charge is larger in magnitude than the second .fkmy(f )5ien l4vjc:charge.

  Sphere A carries a net charge and sphere B is neu r9czrb-3l2 ijtral. They are placed near each other on an insulated table. Which statement best describes the electrostatic 3crzjlb9i- 2rforce between them?

  Two charged objects +nw6y y w+gqy-e( km.kattract each other with a certain force. If the charges on both objects are+w.nmy6- ekygqy+w(k doubled with no change in separation, the force between them

  Two charges are separated by fajh*f u7/2031rif wzw xovh8a distance d and exert mutual attractive forces of F on each other. If the charges are separated bf h 1w87xzv03war2o *ffhu /jiy a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hd 3h)u-lf+pu f v/bm0uappens 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 original val/ hfb3-l)0p+v udfuumue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to gck:;3)qjd qfthe magnitude of the force on the proton if a second electron is placed next to the first elj cqfk)3d;:gq ectron?

  An electron and a protoq r1a:,ka n, qzd* uwlb633wean are separated by a distance of 1.0 m. What happens to the magnitude oqab3rl*z 13a6 ,:qnuaew ,wk df the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What h1x,z)og phtr rz8 /7s85ozpjp appens to the size of the force on the proton if r8jo z/ h7)1p5xzpg8spto,rz 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 se3(is 4zg4yemd cond 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 ofyids(m 4zg43 e the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is p(e. pmi* c8no5sobmz 3c 1ijs3laced at the centroid of an equilateral triangle. When a second b mmj ozn*ss83cc 1 i(o3ie.5pcharge 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 vertices?

  Which of the followingo9rs;sj1nvrzdrugzwh/la2 y 8 ,8 ,7j is not a vector?

  At twice the distance from a point charge, the strength of the elt qmm4gp4/ /xtectric field

  Is it possible to have a zero electric field value betwegpaxc2a(0 *lc en a negative and positiva2(ap gcx*0l ce charge along the line joining the two charges?

  Is it possible to have a zero electric fm/+s6gog ul .1q9,gz w+ afuohield value between two positive charges along the line jo /a+qof9u6+gs, mlo uzg gw1.hining the two charges?

  Electric field lines )h.w *,n7ai n/ofnbem near psitive point charges

  The electric field s(bvyk33qjm xcen 8+ v(hown

  Can electric field lines intersect in free spacef8w 0z,z ysxr:?

  A solid block of metal in electrostatic +:ajgo lx1in-.79jtgq r5u kr equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inka+r59r1n -:u tojl7gjxgi . qterior.

  If a solid metal sphere and a hollow metal sphere 1fuh2 ml2rl jc+4ig;h8y xsjmlm;96p of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfaclu j2j 8m;xl;ys6h cp 19mr2h 4+glfime is

  A cubic block of aluminum rests on a wooden table in a region where a unif.03hoi +ykbl aorm electric field is directed str+a. k3oy bilh0aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ey , 9/yjss-;l(ijfh 5s pml:pflectrostatic equilibrium near an electric charge

  A positive point charge is enw71 *ds(wuyppx2* qv gwg+1f 45gfy qyclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point d1vwyq2q4*w(g s+* xggwfp1f5ud7 yyp irectly above the hollow sphere has

State three propertij0a mcugm0y,czm4kce72..(mk .k x ezes of conductors in static equilibrium.

State Gauss's law.

  The charge carried b b pa;u1ara.b; :ms9mvy 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 protons than4f y yil6)spq9cl65srqyu,/ s electroipls9q 6qsly54,yy f6ur/ sc )ns does this piece of plastic have?

  What is the charge on 1 kgujfedy.q+ 0ttgd1 ugz29ew.- of protons?

  An atomic nucleus has a chargq 3(d sm3o9ppid+pl-ke of $+40e$. 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 o7 k3apd s4jm6/zeo4taf 2.0 and -4.0 mC, respectively. What is the magnitude of e3jmsdo64p4z 7a k/ tathe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force 76cqdcu/ zfaj;/xitp y8n 5;a between them is 1.0 N. What is the magnitude of the second /d/pn65qu;ta 7;jzcfaiy 8x ccharge?

  Two 1.0-C charges have a force between them of 1.0 N. How ;e(s7xpdui8l 4a 0saofar apart are they?

  The force between a ypogd38 w6 tc*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm 7nwy3bc)ux1/nei oh t56ldf/ apart, experience a 1.0-N force. If they are moved to a new separation of 7 cnf5e ow1in6h)duy/3btlx / 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC ares-3 lghbo7kz9f;akp2+j)gdp( mz 3we placed on the x-axis. The first charge is at the origin, tpzg 2e kg3s-ja7h+;kmz ) l9o3fdpb(whe 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 onx1gh-r/v k8si 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 m8h/i- v1xsgk rC 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 folzyg;x m);bsh:lowing 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 sm)xbg zy;h;:the force on the 3.00-mC charge?

  A point charge of +Q is plaqu56o va vhmbmw7;5tba* p/u l 5.zg8nced at the 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 magnitude of the force that acts on thz5g7lh85u ubt./m m nvoavbq; w6*p5ae 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 o 8 zea 5-tlsm)l9fal4d4cw(dmzm;y8nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What w4t;c)alodda9z l z (485mel mm8 f-syis the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3-jdx7yiv:y3 ws-x8 aw0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is ti x3w-s 8vad 7xy-:wjyhe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at hq5*-w.qe xjn wu2*faqyjxov e,1b49 the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitud-q x9u*fj4je* b ho1 y5qn.wxae2qvw ,e 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 m. At whafkremi17e g ; gtj2.l3iu5-kz t point, on a line between the two charges, would ikt35gkg. l7 ejmrei - f;z1u2it 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 ag l4*a+ 6riv/k3kwl xhu26vff +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the nlf*lfr34k6wuk gi/2hav v+6xet force on it is zero?

  Charge +2q is placed at the origin and charge -q iz 0pkru)*g (gd.-, nbm da+wuns placed at x = 2a. Where can a third positive charge +q be placed so that th b-d0m ugna) wn,(z g*pu+kdr.e force on it is zero?

  A copper penny has a mass bvaeusby nsm k3+d7(s1+jq- m 3h,m v7of 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 b cuo g.w3w5tbra, ,l*the force of gravity by the attraction of a fixed proton some distance above it. How far above ther,3l.obu,wgc t*w 5ba electron is the proton?

  Two 0.20-g metal spheres are hunctg m2/2 7pruxd:6bk0ay+yh tg from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fot/mpba :y cu7xt6ry+ 2hd0k2grces 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 magnikiw; j-ijg3 ; i6yy3 wh*vf-rwtude of the electric field at a distance of 1.jhr yj *iw- iy3fkw3;w;g6vi -0 m from the nucleus?

  What are the magnitude and directiowa(r *;rtf*k on of the electric field at a distance of 1.50 m from ak *ror tf(*;wa 50.0-nC charge?

  A 5.0-C charge is 10 m fro+sh mus8pfc 5y1 sc/p/ e:aet*m a small test charge. What is the magnitude of the electric field at the locatio1ahm/c* p/+p:c5ssft8ey ues n of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of oy:xyf7pa0c( ,6 i)sj9sxdcr the electric field?xfsryi)(7 : 6sx09ydc ,ca pjo

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of d )sui3 1b,kof, dde :+febo-fthe force experienced by a+:o-b,k3df u dff b)i1od,see 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3/.lzpusvyrx qo,-f 9d/ated1v5 4dv 2.0 C and are separated by a distance of o2qfar.v -evdvut5,/1z9 l /y pxsdd4 4.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is pla(y6+h6w ivuo gv7y qh,ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm my6 q7wo, vh6 gi+y(uvhark. 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(o- sggkq9/fpcvu*t5 s ,7 yo/7k fdao.0 mC charge is placed at the 50 cm mark. At wh( s f9*k 7fc 7u -ogag,/yopsv5okd/tqat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mCct24*h *xu ho0rrs +.hx mzql84j qze9 are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the prx9hhmo*qj.4 zxhs8 qer0cu*4z2 t+ loint midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidedzk 3v)awsy*f+v ak+ ; 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fz3*kav df+k+)wvas; yield at the center of the square.

  Consider a square whicym q(r 5,ncz+ah is 1.0 m on a side. Charges are placed at the corners o+yrac(q5 ,n mzf 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's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform + leco)adq:v3n 21q2)re cetkelectric fierd2)q ckq3e2en v)oteal:1 +cld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of 2i ;+br mv,)rnwck4uc 2oklq7$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is plclk9- l7j/pdu aced in an electric field of 6000 N/C pointing downward. What charge must be placed on t l/u 7kpl9cj-dhe ball for it to be suspended?

  A foam ball of mass 0.150 ofc(lg/ v(k7v g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of g lf(ckv vo7(/gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radi-v bovtt xu/(4+d9u1w2w-u3 g cfsr pdus 10 cm carries a charge of +2.0 mC. What is the magnitude of the electr( du/sx r v9 p1bcowf4gu2d-wtvu3-t +ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrbdmaf/,; lnkse +s+4hies a charge of 3.0 mC. What is the electric field 6.0 cm from the cente ks4e;m,nbfdl/+hsa + r of the sphere?