State the law of conservation of electric chars;.sp -48 onmkwy*, eqibv;fpge.

  Is it possible for tw9( q5)drcaiwpb8gnd1 6p*gpm +h-bxb o negative charges to attract each other?

  Is it possible for a positive and a negative charge to atw(b38kw04db xfgdhx4 ;gr/.:iixqds tract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod aca7cqsx-kkc(- psv3t9 r m9lg* faj )-eqa al*)ksg37 t-- -qrcps(9 ke 9fmvxcjuires a positive charge and the silk

  A proton carries a

  The model of the atom shows apu3f9w4)y cg1vq ov(e

  A neutral atom always haw6dr+-mgp*cn v l z8a8s

  An atom has more electrons than protons. The atom i(4(6vkvjn cvoo r:sy h:8mdr+s

  Materials in which the electrons are bound vern3ua3 9dyelz, y tightly to the nuclei are referred,39 yle3unzad to as

  Materials in which the electrons a anqu,180*x hxxsj; 2md qdkw8re bound very loosely to the nuclei and can move about freely within the material are referrek;d xxdha28w qu0q*j18smx, nd to as

  A negatively charged rod is brought near one end of an uncharged metal bar.i*g3)xw l9 vp ,a,a jm5*ajkwr The end of the metal bar farthea3i,vwjlwaj k*p,ra)x 9*5gm st from the charged rod will be charged

  Sphere A carries a net p2jfprl (2v ; *cs-eqziositive charge, and sphere B is neutral. They are placed near each other on an insulated table;e -fiqcp( rz22jvs l*. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivmj(ld 8; ulf1 tbp*v8kely?

  An originally neutral electrdhstl/fykmlzn)r2 ,.(y49s)ro 1j eeoscope is briefly touched with a positively charged glass rod. The elej r t9 sh)24eley.d(l)n,fzky1smo/r ctroscope

  An originally neutral electr+akrt 6q,ae ub)v 2wj2 639iov4ag/fsofy5td oscope is grounded briefly while a positively charged glass rod is held near it. After the gdrf2 tsb4i vwygfao a/voue ,q k+aj69) 6325tlass rod is removed, the electroscope

  A positive object touches a neutral 8*x0gucx9 g; 0llh 7jg s0unaxelectroscope, and the leaves separate. Then a negative object is brought near the elecl 9x s0n8hxx*ag u;7j00glgcutroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on ati+cyl 7id 2wn8f: -jyn 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 negative object. What is the final charge on ea8 tifiy 7d:+ncy2jl- wch ball?

  Charge is

  What are the units of the Coulomb constant 2--/ adc dt quyoh:s5m$k$, which appears in Coulomb's law?

  Two charged objects are separatfm5q4cb m d3*zed by a distance d. The first charge is larger in mag f 5*qmc3b4dzmnitude than the second charge.

  Sphere A carries a net charge and sphere5 i3f /;;tzeblt6dirj B is neutral. They are placed near each other on an insulate ib; /re6 zitt5df3l;jd table. Which statement best describes the electrostatic force between them?

  Two charged objects attrlnnkux*-)sf1ap 1jpc f5 - rx)act each other with a certain force. If the charges on both objects are doubled with no change in separation, thenj-flxp1)-*r5c sfu a 1p)nxk force between them

  Two charges are separated by a distance d and exert mutual rs;iy1hto *e6kn 6rnz li0e9 0attractive forces of F on each other. If the chargesk069ieno*i 6lrst1;hzy 0rne are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects ft8gc,+o*) s7xe1hbf; lg tyjattract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, aycxs lb;j+)h, 8*17e tt oggffnd 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 distance of 1.0 m. +02w e una6qb;v scurpu :5 x9d7isok-What happens to the magnitude of the force on the proton if a second electron ikad0uw9xcpei u; :u5q n 7-ob62svsr+s placed next to the first electron?

  An electron and a proton are separated by a qvnab+n.t0,t gf 8)o rdistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron , o8gt ntrq )af.n0b+vis placed next to the proton?

  An electron and a proton are separated by a distance of 1.0vh gc;vd6;3r n;18h4f7avcxv f9gggh6 ha3w c m. What happens to the size of thahvg8hg;v; crv33gc 64g7 hcfaxfn1 vdh9;6 we 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 second point/ 4 7id1cbzv0ndq. uln 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 squi1qdz.cbn0 und 4/vl 7are'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 equilateralx c8 lf,,c2jizafy*x6 triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of i 6*jx,8xy ,zfl fc2ac4.0 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 not a vector9qkq k7--jytxe rj+t 8?

  At twice the distance qh6 wn xj+19yqfrom a point charge, the strength of the electric field

  Is it possible to have a zer+xdj5k2tmu8;oxw;o k1e b 5duo electric field value between a negative and positive charge e;x5td;m+ko5 ubw 1jkx8oud2 along the line joining the two charges?

  Is it possible to have a zero electric field value be8e c5lk+(.s6kj kialjm54v6 ujoshm*tween two positive charges along taujmel66 vokj s*k c 55m. l+8k(sij4hhe line joining the two charges?

  Electric field lines near psitive f /ue:;uu b;oopoint charges

  The electric field show yn0ki y-e2 :ch +u,vjj/fzd9fn

  Can electric field lines intersect in free span7 r4pcy)k dh(vc b)y;es3u o6ce?

  A solid block of metal in electros (q7d5+lreze5c hvwx1tatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'+w 75vr lzdc(exqh15e s interior.

  If a solid metal spher;gs/ q a nlbyvtq7ks l:w+9tvt54*/cee and a hollow metal sphere of equal diameters are each given the same charge, the electriw/kt ygbsctn45*; 7/vv: l aqseq+t9l c field (E) midway between the center and the surface is

  A cubic block of aluminum r:4 /j, bjrt*on5l- dui 8lzzzt( 7blnnests on a wooden table in a region where a uniform electric field is directed straight upward. What /bd,llj8 5 birlzn- 7o :zz4 (tnnt*ujcan be said concerning the charge on the block's top surface?

  If a conductor is in elgt;gc8w/ aqc0ffnq2 xeb8*b 3xs3c3 dectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounjmvj3zf xix8gtp4 z 2 .4,i*6bc/catmded. As compared to the case without the hollow sphere, the elecibiz6p jx*m,ctc44vajg z3m/f tx. 28tric field at a point directly above the hollow sphere has

State three properties of conductorsej kvy45 c951 4g9*w y3iuwl-pi kgwnu in static equilibrium.

State Gauss's law.

  The charge carried by r uonai6v,6q7 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 protoqigvw e6v a4qxi w9;7b)6fe7wns than electrons doifi; 796)ev4w g6 a 7vwewbqxqes this piece of plastic have?

  What is the charge on ,bpo .scnbur*tw 3s: )1 kg of protons?

  An atomic nucleus has a charge of l(ky 8loq 4fy9$+40e$. 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 opy*w zb)xfi*8wju )pwik- q:c1)-cst f 2.0 and -4.0 mC, respectively. What is the mau)*iiwtwz p qpkwcsbxj:-c )* f -1y)8gnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secondat6 qlq-)9o*o zikxv l1 0n9zo charge, and the force between them is 1.0 N. 91onovxkqzoq*li 6zt -0l9a ) What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart aryjy ( xg9ldoj i)6v;(twiyt:r3:lq6 j e they?

  The force between a 4 sk1mkzzp91u $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper j*8nd1z7socw ience a 1.0-N force. If they are moved to a new sepsn 7zwcd*o1 j8aration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on t:l rbd/y lma.3nbvt* f26hlv-he x-axis. The first charge is at the origin, the secondy2b/lr v3nd.b t6:fa-v *l mhl 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 a+dfds 2jg 4;7;stux qon 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 mC at the 100 cm mark. What are the magnitude and direction of the sugj+d;4xd;at7f 2 sqelectrostatic force which acts on the charge at the origin?

  Three point charges are located almnc*nc: : hw2t the following 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 the c2: :cmhn lwn*force on the 3.00-mC charge?

  A point charge of +Q is placed at the cent8 2 zbv;mgx 1qv2s (:pm2pfqrker 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 centemqp 2p b2s2:8v(f1r v; qkmzxgr. 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); Q2 = -1.0 nC is at (0, 0.10 m); Q3-pqx6hm1n.1grgnp2l9 jb xd) = 5.0 nC is at (0, 0). What is the magnitude of- 9)hgpqp xgr. jd1lmx2nbn16 the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -193w)( rav wzdf.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fzw a9d ()3vwrforce on the 5.0 nC charge?

  Three identical charges of 3.0 mC ar;-dcpu4kvph f)u a**jy6 6w /lpy*iqre placed 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 on 4uyfy-6lw;q jrkihcuv*/ p)pd **p6ae of the charges?

  Consider point charges of +Q and +4Q, 4rk*r+w cif*8ec3qjpb , w jx6-tif0y8eht j2which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q suchhb* ir+i,0-3wwerk q4f6fec2 yj88ttcp*x jj that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orixu6qf 8 ug.;(cjzhn wm urz*-4gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be plg cmx; ( 6zuf48u-jq*whuz.nr aced so the net force on it is zero?

  Charge +2q is placed at the origin uzypo9n o5 +c+q+lvom8 )/ihd and charge -q is placed at x = 2a. Where can y p+/m9 d+oooz i+ )uncvq8h5la third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A r.+2 1 tiek ijbd2hpfv nh*.84onclc6total 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 agadx:p )*4b ;m lnmb4qklinst the force of gravity by the attraction of a fixed proton some distance above it. How far pqlkm4 :l;)* bx4n bdmabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by9dpdcx0 *qk ,h nonconducting threads w9h qc,pk0xd*d hich 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 magnitude of t8 w+b qh fmq1pi*j9l0the electric field at a distance of 1.0 0i q98tjf + m1hwpl*qbm from the nucleus?

  What are the magnitude and direction of the electric field at a distancbu*e 2e.jby4 de of 1.50 m from a 4d u2*e y.jbbe50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituhnb) dxzir 7wr-3.v ,rde of the electric f )rn3.d bhrirxzv7 -w,ield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction oqux0+f4v)9ls zp p; sof the electr ; )qp4s +9xl0fvposzuic field?

  A 5.0-C charge is 10 m from a small test charge. What ij6l8rr fy5-mw ql78gj q9i-wgs the magnitude of the force experienced by a 1.0 nC charge placed at the lo9-l-8q m6 q rjl5g wg7jwiyr8fcation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a d7 ewz0ld p7dxy0ni3c9 istance of 4.0 m. What is the electric fxdewl77pc090n3id z y ield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st1kpsn yzs2 ) oo5rd1i;x0)oohick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field aty)1 2onzi xpoo5kh1or;0) ssd the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c n7cp/c8m1z+ tirow wu) e,ux(gm( m8vharge )t8u(u+w/7vo8 nmziem(r w xpcm,1 cgis placed 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 mls(ixqyq5dx*e : m, 5pC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electri,qm*e:ipxlx 5( 5d syqc field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squ /iq++nez5j.b sf e3nlare of side 0.50 m. The last ls. +f3z 5ne+jeqbin/ corner 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 oju. tkaf r0/9htyr,2 yn a side. Charges are placed at the corners of the s,t0.ua fyk92 /jtryrh quare 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 unifs*kcnf px:t :jjh )o8i vi7wja)e;3h0 ( ;opekorm electric field. What is the magnitude of this electre p:hh0i )3pj)7j*kotka;8 i von: cf(xjes w;ic field?

  A particle with a char zd+f5(, n/mg+mnhintge 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 is placed in an electric field of 6000 N/C;ri)o gx,z0f;ph d ax) pointing downward. What charge must be placed on the ball for it to be six)r p,oad; ) h;zg0fxuspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.lc3:rk ze4) qy The ball is placed inside a uniform elece4qylzr :3c k)tric field, and is suspended 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 magnituz*,r*sww(spl f3fb *hde of the electric fieldr(b**f3 ,lwfh zps*ws 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What isg; oi+foa*2pv the electri +aov;*fg i2poc field 6.0 cm from the center of the sphere?