State the law of conservation of electric chaeslx;vnh( v6vrc3 2dtnz6 (6 yrge.

  Is it possible for tw 3 5ktohlm)f3:uyc,xs o negative charges to attract each other?

  Is it possible for a positive and a* uxzdkd8f -x5k,3uua negative charge to attract each other?

  A glass rod is rubbed with a pieq em;8 2yc0qsuy-f7w bce of silk. During the process the glass rod ac8yweyc mqfs02 u bq7-;quires a positive charge and the silk

  A proton carries a

  The model of the atom show/ opyb1fev- x)s a

  A neutral atom always (bn6 dakv vz4n4*bo/0tl g: m*vvy i.zhas

  An atom has more electrons than protons. wlb;ug mudu7xp+d.02 The atom is

  Materials in which the electrons are bound very tighv-/vq/el x nr( mkx9-itly to the nuclei are referredx/e-mv(-ixq k/r9 n lv to as

  Materials in which the electrons are bound very loosely tkdn td:6:eyrv;w8e9 yzz7 c*b4wi mn+o the nuclei and can move about ecdvy 8diny6e:t*: + n9rzw;7b4zkw mfreely within the material are referred to as

  A negatively charged rod i+1 pghq1k/ uhqs brought near one end of an uncharged metal bar. The end of the metal bgqk +1hph1uq/ ar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and6dp db-+qnk m- 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 stb-npdk mqd-+6atement is correct?

  How can a negatively charged rod charge an electroscopengsl :-kq 7*ig obwe41,ah6fu positively?

  An originally neutral electroscope is briefly tou1pwmtf*; pbmil2t p2,ched with a positively charged glass rod. The electros mb *1t22 t;wppi,pflmcope

  An originally neutral electroscope is grounded briefly while.rb u c24qq,ckr6hih t5;ywe2 a positively charged glass rod is held near it. After the glas.hcrqu4r;wt5k,6b2i yc qh e2 s rod is removed, the electroscope

  A positive object touches a neml,zc;o;8wb mutral electroscope, and the leaves separate. Then a negal,cmw o8;b zm;tive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargj qa4wur:fz0p :uwm.4ed 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, andaf: mq uwru0zjp4 4.w: 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 of5s9 ilb/ fsr)i the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated 8 hx+ q(ha0+pv sas5d-ditck,by a distance d. The first charge is larger ih,a+khd05cs tda -qis(vx8+ pn magnitude than the second charge.

  Sphere A carries a net charge and sphere B iqvbevg v)drru- y ,/-8s neutral. They are placed near each other on an insulated table. Which statement best describes the e -yu/v)r- 8bdvgvrq,electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges xw36q6s b)5dyvlw1ud /gr e-eon both objects are doubled l 3) -gse 1w d6xb5q6r/veuywdwith no change in separation, the force between them

  Two charges are separated by a distance d and exeaoh0 r +; pev.fh)b,fhrt mutual attractive forces of F oe r f+);0phhb o.,vahfn each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcet). :0x-clx-j zwpfu c F. What happens to the force between them if one charge is doubledc- wj xz.tu-l fx)c:0p, the 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 sepsoki+9gq4x u g:/io r/arated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a sr+uio/si:/g go94 kq xecond electron is placed next to the first electron?

  An electron and a proton are separated b +b cupv cw *gh/n(4bc4*t,pgby a distance of 1.0 m. What happens to the magnitude of +cvb gcnwp4*g /4c,t*(ub bhpthe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated byx8 c,/yw9cwz k a distance of 1.0 m. What happens to the size of the force on the protonw cy8z /,wcx9k if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c 0fw r6tl-;ibj2k lp)1q q8hbkenter of a square. When a second point chf jhw8)0i;6 bllpt-k1rq2kq barge 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 positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of ann (w ker,ownu4.60jq)jrfto1 equilateral triangle. When a second charge of +Q is placed at one of the trianglow(qukt.j46r nf 1nje w0r ,o)e'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 following is notrz.m islt(ur )l;n8;ii7)wt/o ,zgz d a vector?

  At twice the distance from a point charge, the strength of the electk j:wd3v ve1(hhvyw.u3 t zp2ww (3k:tric field

  Is it possible to have a zero electric field value between a negatv bc03lxoc8le2)j 8r8 )v ncts+lh,crive and positive charge along the line joining the two e o)3ljtvlrcbchx+8cls2 8,0ncv) 8r charges?

  Is it possible to have wc3o0u)+ceo +ncp ccl*7*o1kcl5i rla zero electric field value between two positive charges along the lin5woccl o cl*ec rk 1+u +cp*i307c)olne joining the two charges?

  Electric field lines near psitive poi;n 9eeqe;nb*3+el 4; qfpqi bxnt charges

  The electric field shov c513gh n4zzyx7nt ,wwn

  Can electric field lines intersect in free spacew/ h+lvt,kfct e1,*ux)xdf i4?

  A solid block of metal in electro6jrd(qoxu4(7sw s c nzg;z 9v3static equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiszor7x z;3d4n( 69(gjwcuvs qor.

  If a solid metal sphere and a hollow metal sphere of equal diameteyeec5/dd7* 3c3et denxk;ql t :f38eqrs are each given the same charge, the electric fi*nc3tlqe3eqkee dc/f:78xy ;te3 dd 5eld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reh)i,5n*(upjw9 gvp oc9 bn w)zgion where a uniform electric field is directed straight upward. What can be said concernigv*nzc j5puw9p,9oh)n)( i wbng the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nea;7t-xhtl .i plr an electric charge

  A positive point charge isl)svm:uuvzwm ;q4 t ,1br:4gf enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the ele4u; l uq1 ,gm:szw)vt:vmb r4fctric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibri9259p:tqpwp-k q 4x fs c9xkhm1 ac up7i,hr-wum.

State Gauss's law.

  The charge carried by op i0xs/3ul 1jqne 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 than el3sj)ndzz8.. mi9b * zuf msjg(ectrons does this piece9mj(.imn u3)sszfj zb8*d z .g of plastic have?

  What is the charge o(x26qej vtmj i m f /mv69:0jolpkw-8dn 1 kg of protons?

  An atomic nucleus has a charge,) gj5lbu k -vyux8he6 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, l1 qdc7/pb(fi+h +e4dl ;yqfhhave charge values of 2.0 and -4.0 mC, rpc (d7f;1ilhqy fedlbh4 /q+ +espectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15jwj-6v(zmp bj )0qez, pegi *2 m from a second charge, and the force between them is 1.0 N. What is the magnitude of the second charge?wm)p*jq6 g (2e-bp j0 zeiv,jz

  Two 1.0-C charges have a force between them of 1.0 e2p ,km+arzkif84m 5wds2p 0gN. How far apart are they?

  The force between a b 8x3/u6ngj0xbp d zt:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cp+dpp+o q227ld y(ggg/(t mfqm apart, experience a 1.0-N force. If they are moved to a new separ(gq d/ftd+l 7g2o(pmgp+ p2y qation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chae ; wyjyij+yulk ,-z;tpg0f88rge is at the origin, the second to the right at x = 50 cm, and the third is at the wk ,gijfju08-pyylyz;e+8t; 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 of 4-cq t rc(p f.8kd,a vs.l,hif+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 electrostvaliq,c rht,s4dk.- fp (fc. 8atic force which acts on the charge at the origin?

  Three point charges are located at the following posirs r 6s5)ruyf4tions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC asf54sur r y6r)t 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 hm(fl 6)g ycj0f-b a*ha 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 )a(*b-jhfgc0mh lf6 ycenter. 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)(io +a4y o8ldnlp2 en*; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wh8o dl2(oyea4*+ipn l nat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (04q i ; 3skof :rdj8+)gjwrty8a, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is tht+ ois8 :rw38;dj4 kr)aqgfjye direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices -v *vw118ddor/*kayw bi0lczof an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts a 0dw/l-8o* d1bkvz*yi rcv1w on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. A 2l7z k0d zwq:,wz3m-ieynrl5t what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forqzim dnwl z53zw7,0l-yre2 k:ce 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. Where yxwxc6jz/7ag.wf, xmk *.a. a on the x-axis can a third charge be placed so jxm af* w/cyakzwa,7 ...xxg6the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2arc+ i6:z9voxfe;( tde . Where can a third positive charge +qx9+cf:(oevzd;r6tei be placed so that the force on it is zero?

  A copper penny has a mass okl,eim()igmc i8+ae 6zi/2 c mf 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 att6c+19v xylfr c6g rfd5raction of a fixed proton some distance above it. How far above the r91y+56g vlfc6dfrc x electron is the proton?

  Two 0.20-g metal spheres are hungw jvk)(h4fhs 7 from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repujw4fsh(v k7 )hlsion 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 +403imwf8 -dl(rke. What is the magnitude of the electric field at a distance of 1.0 m from thdmif3-8 l(wk re nucleus?

  What are the magnitude and directcqbc4/44gb.xpc 3h310l nrt7pegj s p ion of the electric field at a distance of 1.50 m from a 5s3tqer.bpn7j4l h04g x4c bg /1c3cpp0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofk67oj gi4gh o5 the electric field at the location of the test og5j 6ogh74 ikcharge?

  A 5.0-C charge is 10 m from a small 3a0hx8s vmou.test charge. What is the direction of the electric field?30vamh xo .us8

  A 5.0-C charge is 10 m from a small ;ti9 9t+c:dcvjlem3u test charge. What is the magnitude of the force experienced by a 1.0 e d+uml9:v jtc39;ictnC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0zc)7 0 v7usiru C and are separated by a distance of 4.0 m. What is the electric field at a point midwayrcs 07v) uziu7 between the two charges?

  A 5.0-mC charge is p4)zht ;;wfy4ui;f lq wlaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm m4 ftqziyluw;hw 4 ;);fark?

  A 5.0-mC charge is placed at the 0 cm markw /*q n/l 8b4idquzv(p 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 electric fielwin8( /*4 blpvu/d qzqd zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 ak8zt*3(ri j tnnd x = 0.20 m. What is the magnitude of the elec3itjzk* nr8 t(tric field at the point midway between them?

  Three 3.0 mC charges aprkyr5two(wh58 goi; a 4k 0/oztg:u *re at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC ch p4a(y5kr5gt*o: / otouwz g 8wkhr0i;arge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargevzt b8g,ka7q(uyzpv kn y07 +1s are placed at the corners of the squ7 zq yvzgyn+(up1k8a t,b7v0kare 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 yjwhjk9 1 4elb(ix (0t4mo6vrmC when it is placed in a uniform electric field. What is the magnitude (4objlk9je ti w1h 0ryv64(mxof this electric field?

  A particle with a charge of 7/ws: kj.- ;atebr tmo4.0 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 noyk99 2h:4qjjq7 smu placed in an electric field of 6000 N/C pointing downward. What charge muu9q h k:yoqj2ns9mj47 st be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0oz1*e0rlxa 6 pcqx)89(ngzww0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dzw6g 8 9ep1*no x( xclwa0zrq)irection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whan1rjhn9k o8knl -,mr0t is the magnitude of the electric field 5.hr1-,ok 9jn mnl8k0rn 0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cb ka ) f,nqk+yn7rpg87m carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center a),+7qbn8 fkry nkg7pof the sphere?