State the law of conservati4 /zva2x-7tqd sw 0uqre9 zqb.on of electric charge.

  Is it possible for two negative charges to attract each othel ds2g,uvi64 ipz.-lty- ma7nr?

  Is it possible for a positive and a negativmdc*7ri .i6 zuyve gf 6-,0oese charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gla8f: .4:x pq ndlzyrfr se;+1uuss rod acquires a positive charg:ps yeqln :fz ;r+f1rdu4ux8. e and the silk

  A proton carries a

  The model of the atom shows lkmgo3; 6y4n1 h hpjea 0+cik:a

  A neutral atom alwayse*kur.ee 2fwfv1jh7 ag9 kl x7+j io,2 has

  An atom has more electrons than p s8w2ob3vqn; v8c wvj,rotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclpb3zf 3x8c ;fg goatj57o2 i4yq ra6*qei are referred t4bogi;pq a3 fzxy65 37qgf a*ocj8 rt2o as

  Materials in which the electronss*ldj omkx39 qav3(o) are bound very loosely to the nuclei and can move about freely within the material are rsl9(33 )* oqdx ajomkveferred to as

  A negatively charged rod is brought near one end of an uncharged metal pj9jc5.au k5ubar. The end of the metal bar farthest from the charged rod c5uaj.j 5pku 9will be charged

  Sphere A carries a net posiyw,3da2h)5m2 :jbs frpx v g9gtive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wiwp,9dh gfj5br32s:2gvm a yx)th a wire that is grounded. Which statement is correct?

  How can a negatively cha:kltkbfvbc m; )2 yopw )35,ckrged rod charge an electroscope positively?

  An originally neutral electrosc ,oy)b4s,qvs jt0t4 oi69cabn x4m x;kope is briefly touched with a positively charged glass rod. The elecktxyc; ns iso44)t, v49o,q jxbba6 m0troscope

  An originally neutral electroscopeczi2p37qcg7*f w1e. bra7lmk is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the efg*lbwzcq. e1k 77aip2r3m7clectroscope

  A positive object touches a neutral electroscope, an1r29: qgacj2-;;mcnc fwr z ikd the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. -2jcr1c;wckm 9 n z 2ra:fqg;iWhat happens to the leaves?

  A large negatively charged object is d o* lq9ztisqt:h-efi6; 29vgplaced 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 touch the n 9qztfio2 ;ls qvi:g-ted6*h 9egative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb c+q*bhbo3 a za th99l-uonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l x3qpe hibm:hljuf1)k1 y11(qarger in magnitude h1u1 jxhf1() 1y3il:q mpbkq ethan the second charge.

  Sphere A carries a net charge and spher .zvlgxkw+m,hfv,ekv3 (l2 2le B is neutral. They are placed near each other on an insulated table. Which statemxv2lv.gfvz,+hk, ( 2 wmkl3elent best describes the electrostatic force between them?

  Two charged objects attract each other with a certai if*gz6k; jsoplrtgy n-i/r*8,e5g ,r n force. If the charges on both objects areg*er8,;p-izltn kf5jgry/g 6si ro*, doubled with no change in separation, the force between them

  Two charges are separated by a distance d a -kg,os0oogt1l-lbxd10* uttr. pwj9nd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, wlstw -b.orpgtugk0t-ox *o 01d91jl,hat are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to tfmyi* lvgetgr/mm8n d7( a*4)he 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 value? The force i*4 7ma *(felry8im t m)vd/ggns now equal to

  An electron and a proton are separated by a dis/;ld -drd 5d lhx4sd-8y0cmm jtance of 1.0 m. What happens to the magnitude of the -d0-hmmj4lscd;l/dxr dd5y8force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated byw.zk 27 sb/er58lb ;ib6pdzz d a distance of 1.0 m. What happens to the magnitude of the force on the first elec/78 dbilwpz zzs2e 5rd bk;b6.tron if a second electron is placed next to the proton?

  An electron and a proton are separated )-fj9vnj..hr gyu5( xjel /i oby a distance of 1.0 m. What happens to the size of the vxjiu..lj/ eg) -n fjr5y oh9(force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placecju.mfv8m3b9 k/r*ad d at the center 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 th /ruv.jm c*9m3f ad8bke 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 an equilateral t+ppe.jki ibp * 86+ayoriangle. When a second chaoe++.i6* yak8 ji pbpprge 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 following is not16 zk f)ua/arx a vector?

  At twice the distance/su)to c fw0g( from a point charge, the strength of the electric field

  Is it possible to have .b3e y 4ak)qkza zero electric field value between a negative and positive charge along the line joining the two chab y)ak4qzek3. rges?

  Is it possible to have a zero electric field value between t c;wa)tv -4hjoy(j wq0wo positive charges along wytqj) h (;0 4vjwca-othe line joining the two charges?

  Electric field lines near ps2zhaanyw 2:s7: 8mn jc*l2 lmuitive point charges

  The electric field shsrn8j( bj0f k)own

  Can electric field linesrjdx7 4r bkp,- intersect in free space?

  A solid block of metc2l w,p1 tkuw6al in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the bl w6t1l,u kpw2cock's interior.

  If a solid metal sphere and a hollow metal sphere obhp xdv p4+pjg x;yi:tdc;9l-/oer)5f equal diameters are each given the same charge, the electric field (E) midway between the center and the surfa ;gj o)9dp i5ptrxb-vc:elx +hyd4p;/ ce is

  A cubic block of aluminum rests on a wooden table in a region where a uniforo51fp988a(w krq wmwr hd3+w km electric fielwk8(83rh+mowdpwrq a f95w k1d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near mi382ulrq qd7an electric charge

  A positive point charge is enclosed in a hollow metalliti ./61xhj, o 3izcwrqc sphere that is grounded. As compared to the case without the hollow sphere, tiotjw xq,h3z/6 1 cr.ihe electric field at a point directly above the hollow sphere has

State three properties of conductors6f 9(zm8u.agdqym vz-k(wx( ,:vyzg h in static equilibrium.

State Gauss's law.

  The charge carried by one electron is i)v1 .5pu45y)-gdavphi jthb$e = -1.6 \times 10^{-19} \; C$. 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 ptj e5b4jeph7- o l2s5 6pfwxb4rotons than electrons does this piece ofl57wet j542 ef 6bxpb4sp ho-j plastic have?

  What is the charge o6llrqd mg4g. b;3vim 66m xyjqb6(um+n 1 kg of protons?

  An atomic nucleus has a c+(nzc -m(ljvi harge 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 of 2.0 and -4 wbe 9z7 v+i3f*qg xi2ty(+z98l ixeqq.0 mC, respectively. z3qgq2l9 eiiq89x7++fvywz x t*(eb i What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet(z8q 38es: kgq9:(u ffpiucm rween them is 1.0 N. What is the magnitude of the seconfuf9c3:8sr(q izm8 pgu: e(kqd charge?

  Two 1.0-C charges have a fos , mx40i:jixwtz.; torce between them of 1.0 N. How far apart are they?

  The force between a g ceh7+b i/3ch$30 \; mC$ 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 force. If tht9sati :c5wz2) (m hbwey are moved to a new separation of 8.0 cm, what is the electric force mt9wtsczw )2: i5h( abbetween them?

  Three identical point chargesdq *cdd 2q(jc h-r3j0v of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x2c30-cd (jr*qvq d djh = 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 char-j- pew + r9y2p0fxwmege 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 meyp-wjp+ -0e9 2fx mwragnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followiz*un3a :n39hvn+ obn bng positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at xu9nv+bnnhnoa bz3: 3* = 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 n kqzz-bv7;thn4d u 2;placed 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 the center charge if a third charge of -Q is plbd t q7n4kvu-z;nhz;2aced at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0 wzjm(:rn h)4q.10 m); Q3 = 5.0 nC is at (0, 0). What(:nw q)mrjhz4 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 (0, 0.10 m); Q3 = 5.0 nC is- flram5(8 0ygx+ndxm at (0, m-(xlnd a+r0yxg85 mf 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC ar dq4c8yd5q.mejh1 :dhe placed at the vertices of an equilateral triangle which measures 30 cm on a sdhjdqcdh: .1 e5 q8my4ide. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which ajo,rcviaq r139g- h c,,bn4 jdre separated by 3.0 m. At what point, on a line between the two charges, would it be possible a1j3,94rb,nh-co dcvr ji qg ,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 charge i2d pci9nvf0 w8s at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forcd w i29pfn08vce on it is zero?

  Charge +2q is placed a7vqwg6jdfe98 d8 z vhr1n)oi n 992zjat the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be rvijgao8 vd6 jqf7dz9wzn9n8 h )92e1placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. z:k) uxwqkf)- beh1f9q9 g;io 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 a, avqomj;-bc 2gainst the force of gravity by the attraction of a fixed proton some distance above it. How far abo-ac ov;q b,jm2ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common penco2kv)j(l0 oint by nonconducting threads whiv2e0k l (ojn)cch are 30 cm long. Both are given 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 charge of +40e. What is the magniybyf5o/ m0gg- tude of the electric field at a distance of 1.0 yb5/g og0f-y mm from the nucleus?

  What are the magnitude and direction of the electric field at a distakz0ix 2cdpeud02 4v2 snce of 1.50 m from a 50.0-ne0uvxdc22 s id240z pkC charge?

  A 5.0-C charge is 10 m frld h -)/rg+ubcom a small test charge. What is the magnitude of the electric field-/cdh)glb+ r u at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charla8o:ea4rb7 x)t. auf c3p0 d-e+ velgge. What is the direction of the electtpbce0r:8fve ax+e)ua 437ag ol-dl .ric field?

  A 5.0-C charge is 10 m from a small test chakio761i f, rwnrge. What is the magnitude of the force i nw617f rik,oexperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges ea uhkis+q+-tl bzt* 5sx+hm82y ch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges?5b+sz-q l8 h ux2*++ytkt shmi

  A 5.0-mC charge is placed at the 0 cm mark of a meter s70vfjp)bfy05f orf 9/ .tsv litick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fi /t ff.7vbvoslrf050fy ij9p)eld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 dk6tzkx-j. l1 cm mark of a meter stick and a -4.0 mC charge is -tkxd k6l. 1zjplaced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =kexavr 9k2y2 ) 0.20 m. What is the magnitude of the electric fikx aeky922 vr)eld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. 6-br rs +)-u3 t)hbi8bkxcbtk The last corner 8s ) kbt-xb brrtubki-)h6+3c 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..ej4s 3ifvzz; Charges are placed at the corners of the squa3zs jv ezi.;4fre 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 chargzoc 7pt0*rmu+e of 5.0 mC when it is placed in a uniform electr0z+7 rc* topmuic field. What is the magnitude of this electric field?

  A particle with a char ; ;-u0xattwjbge 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 vqxvjs25znt k wa t:):.)nj)bis placed in an electric field of 6000 N/C pointing downward. What akqv .njn:b))sz2tx t5jw)v : charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thb-wdxom ft4p1sk o72 9e ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dbow o41mx s2-pkf 7dt9irection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wq/g; / vsb8idd z/3lwahat is the magnitude of the electric fieldbd// vqd3sw8z;lagi/ 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm19zni 1qsk dl q)k 9pa,;miqsf7l9/vg carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the gvf/kq 7,nk;l )99dip q1imqsa1zls9sphere?