State the law of conservation of electric charg+rnt-h s1:obko+pt*5 mvo 3ywd6d b)me.

  Is it possible for two negatt drp fd: lm/*83lc5mkax*+tyive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othec/+djs8 gc 8ptr?

  A glass rod is rubbed with a piece of silk. During the process the glass 5:gzax)q uic3 rod acquires a positive charge and theux ci:5 q3z)ga silk

  A proton carries a

  The model of the atom sho8l0bh. wta qe(bk hg(*ws a

  A neutral atom always haszvi0n m, y 6au;f0uke8

  An atom has more electrons than protons. The gie5lnm* rz281td y,eatom is

  Materials in which the electrons are bound very tightly to the nucleu p(;pc f)f5etfd;t:v i are referred to vud( cp ;ff; :)tep5tfas

  Materials in which the electrons are bound very loosely to txo5).1t ewn5ps) zpkthe nuclei and can move about freely within the material are referred tkw.z )tnx5sp 1tepo5)o as

  A negatively charged rod is brought near one end of an uncharged metal bb0havkt4v ik r ;kskxs201r3 7ar. The end of the metal bar farthest from the chaaskb; r0 xv7s13 k42k0vrhktirged rod will be charged

  Sphere A carries a net positive charge, and q2 ngq 4whtzlct 22()rsphere B is neutral. They are placed near each other onn2h4wg2tclt rq q( )z2 an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively c3bljd;klozl+w;m d,82 yf8i k3*m udh+-ro ysharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively char5n 6 xbhlm(kk q8xq8udl* 1vv*ged glass rod. The electro1k *b*6(d8 lqv8hx5 kq lnuvxmscope

  An originally neutral electroscope is grounded briefly ,6 m kaw0*blvtwhile a positively charged glass rod is held near it. After the glas a6*0vtk,wmlb s rod is removed, the electroscope

  A positive object touches a neutral electroscope, an fska52o2/b 8mmte 5kvd the leaves separate. Then a negative object is brought near the el/2oebk8mv5a2ktf 5 ms ectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatk kamo6xa4 3q:srkk1: 6v b3wned table. A neutral metallic ball roll smo1q6rav:4a 3kb6kxkk w: n3s 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 negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulom21f. p7k nt lcx;syd*ab constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chc1o 3z r3s +zbgpt29:yfo j;fxarge is larger in magnitude than the second ch:r 1jp;x2sbt y3c3 ogzz9f+o farge.

  Sphere A carries a net charge and sphere Bo.3 +6a wazs(5xg gais is neutral. They are placed near each otheo+ gaa ws 5xagzi3s.6(r on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cey y7p)yflh3 6vf8o-xzrtain force. If the charges on both objects are doubled with no change in separation, the force bzyy o38 fpf- v7xyh)l6etween them

  Two charges are separated by a distancedm 8dpk/23t siq8rr .h d and exert mutual attractive forces of F on each other. If the charges are separated by a distance rihdqm .p kt838sdr2/of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to tl8m u0vv o)ys;6 :rnnphe 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 fn8); vrulp6:m yo0 nvsorce is now equal to

  An electron and a proton are separated by a disubj v .:sxy76ntance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electr .:7sunxyb6j von?

  An electron and a proton are separated by a distance of 1.0 m. Wh .ym/i eln9mqkk9xz+b8q v.e7at happens to the magnitude of the force on the first electron if a second electlb.xq7vme e9z/q9km 8ni+yk. ron is placed next to the proton?

  An electron and a proton are separated by a d1+px qbz-y+wabv)fh-istance of 1.0 m. What happens to the size of the force onf+ x-)q1y +bhzvwb -pa the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the ce hg*anmoo66fe oq 8 y.j.rz41inter 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 8om.fh z64 oq ry6ioe1.*jna g2.0 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 pvc-a* g66fgz7j;orh9es i v2y6 wi;d 5a t9ffelaced at the centroid of an equilateral triangle. 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 of tc gjo dz6;*a9 e-2is56 wfh69f;fvyg7ae ivtrhe 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 vectok f6b9tkgivrl*rpw e -0 4p24+rx s3onr?

  At twice the distance from a point charge, the strength of the electric2l: mb4 ;cauni field

  Is it possible to have a zero electric field value between a negative and posiez a7jadw680d rv9 .7ltz o7botive charge along the line joi ov7a.7eb d 867oja9zw l0rdtzning the two charges?

  Is it possible to have a zero electric field value between te(.9ed ss3dow jra67 two positive charges along the line joiningds9 .3ot6j(7e dr sawe the two charges?

  Electric field lines nezo .cn)u.5sk x4k22nzxf+gspar psitive point charges

  The electric field sho-jy;i0le o77 uh4 zxwwwn

  Can electric field lines intersect in fd t2w ;g6mx)qiree space?

  A solid block of metal in electrostatic equilibrium is placed in /n ergm4 zz7yo;0bck2a uniform electric field. Gibkyz eo2r7gmn/zc 4; 0ve a statement concerning the electric field in the block's interior.

  If a solid metal sphere anjseq t1t0va9 0:kne3nm9,s wrd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midwa q:ttne9 n1,v9sk0wj3s m0eray between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regiop-bm*wm9rp2) -cs0 zhtzq 5 g5clpl1ln where a uniform electric field1p)wsl2zz r- c-pmh5m 0*lqlp 9c5tgb 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 an electric charhxl+6: p:v* xam39k cr-v mqtmge

  A positive point charge is enclosed in a hollow metallic sphere that imv0b1b u 10mkds grounded. As compared to the case without the hollow s0bbm11d 0vku mphere, the electric field at a point directly above the hollow sphere has

State three properties of condu gh6t4k6;s*i:ou i8;;ayrq tn*lyui yctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is(1kv*pp*btm k $e = -1.6 \times 10^{-19} \; C$. 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 mor5,ylk znuq+bt.sjtu5u fnz-l-/r6 j5e protons than electrons does this pie-qn6 y5- ,kuu.b j t+n5jl5f/rztlzusce of plastic have?

  What is the charge on 1 kg of gbu2w1qptw-kj zz0 . 8.wr2am protons?

  An atomic nucleus has a cb;s 1xz019xjun0rk s lharge 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 ofow9mxom/xk+ 03c9-anei8 rnp 2.0 and -4.0 mC, respectively. What is tx3mpi+0kx r woon/e mn- 899cahe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet dd2(b-2yb 5mwjx:vniween them is 1.0 N. What is the magnitude of the d:nji5w (2y xm2bvd-bsecond charge?

  Two 1.0-C charges have a force bev u-pfvr:1na(q74 v sktween them of 1.0 N. How far apart are they?

  The force between a w6ss c-i/qxu($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a7ku 3hx3 gvsm;d(*ly)h1/mme*pl(b n .emm udpart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the ele(m*nsymhh xlev k3ld7)ubmpd( *e g31mm/u.;ctric force between them?

  Three identical point charges of 2.0 mC are placed wh .f5:n; rykaon the x-axis. The first charge 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 tafy;h: .rw5k nhe electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mi/ev-d1v ewdch;)d/ yC 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 theid/1e h)dce;- vw/yvd origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC atvoce.u -gum -qkw590h n5l w40jctml9 x = 1.00 m; Q2 = 3.n9k-lu cqum5w w.h gl90 -eo405vjc tm00 mC at x = 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 placeo. *4,yphhfdxu m31 dld 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 a1 dmoypfh .u,x lhd3*4cts 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 = -kw4 h qvs:)gm (.an(xz1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fk)(n. smvx(w4 z:hq gaorce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nh1u 6*l5nwmqr C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fo56rnq*w uh1 mlrce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plaohber.9/zij; ,bu +tp7c-k zdced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of thc-kpid;b9t7 j,r obe u/z+ .hze charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whaw8l rl; pcuo 6*yp*rryfu- y3+t point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting ul w u83+fpry p6;-y orl*c*yron it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C fx, 2jgzq ghls-b7:d) charge is at x = 4.0 m. Where on the x-axis can a third chargefzsq)xj:g -b ,7 h2dlg be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where b6m9w0: +i pyhzwu7aqgu d)g8can a third u07gu:) 8hdab m9zip6wq yg w+positive charge +q be placed so that the force on it is zero?

  A copper penny has a.objclhkz+ ;j5 nn,s( mass of 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 forc r5 qy5d3phd:emk 9z,ue of gravity by the attraction of a fixed proton some did5q updz9h,e:ymr5k3stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common p nmh+w.kv2l x+;itzs(.*xtudw7k(i8liu ,avoint by nonconducting threads which are 30 cm long. Both are given identical charges,tkhall( 2wik(ni ;7+,v ux isu+.zvx t.*wd8m 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 a)pnu ppq,vzd2 3)gf; charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fromp)vfn u)gapq; 3,2zd p the nucleus?

  What are the magnitude and direction of the electric field att+;wc3jh+9 swr+ totj a distance of 1.50 m from a 50.0-nC ch3twot +r+ 9thwjs; j+carge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o gw*v-nm* h-tzf the electric field at *z*mt- -gh vwnthe location of the test charge?

  A 5.0-C charge is 10 m from a small test:l w;m*k1 6zub b1ofim charge. What is the direction of the electric field fb;m w izm:olu1bk*16?

  A 5.0-C charge is 10 -hhm0bt3lko/de s*b8 m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location tbs0*kh8hm-ed3 /l bo of the test charge?

  Two point charges each have a value of neus yebnmzl( -:4g3xv)r7d93.0 C and are separated by a distance of 4.0 m. What is t-lbe(rg93)7mxu4:sv y nz dnehe electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c 2idx2u9 3rzv x4cd.0ss1vzfsharge is placed at the 50 cm markz 9 ddr.xsu4csviz2xsv 3 f120. 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 -+ g3+a fplwdo2 op+n/a4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the ap3 po nl+og+/ dwf+a2two charges is the electric field zero?

  Two point charges of +3.0 mC liyv lg kch:8bp28d8 wi z.02gand -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at gbch dpv.:8lk8 ywig02 zl8i2the point midway between them?

  Three 3.0 mC charges are at the thredix7: i))2lpja j4d;foj7 cw8uh/krpe 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 t2afcj)o :7uh8d/ii4j;x d j pkprlw7) he square.

  Consider a square which is 1.0 m on a side.sd0s,befz(z ii*x(l/y.* p fm Charges are placed at the corners of the square as follows: +4.0 mC at (fb/(fz*slii0 zpdxe sm*.,y (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 mdk,z-) ux oo1lsy -jxm0 zz7b6C when it is placed in a uniform electric field. What is the magnitude of thzxl)j ,z6kdo1 0 7-um-bxozysis electric field?

  A particle with a charge of 4.0 mC has a mass v krkmdlnn i3 (t8.)d;w.txn0of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 45utzih4urv 1(jky c.g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for1z(j.hyk5tc u iu v44r it to be suspended?

  A foam ball of mass 0.150bv -8nwwb(ju +4h1b1.mphm fv g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of grav bf+ nvw(u.-48jvhbm b11mw phity. 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 i g el)xe28axo.s the magnitude of the electric field e.l28a x)ox ge5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 n7zrwc*8vfe 1u ; wi/8b(dqom cm carries a charge of 3.0 mC. What is the electric field n7; 8 qwiwmf1vd 8uzc/bero *(6.0 cm from the center of the sphere?