State the law of conservation of electric . j, cn8 yj zj8*bjpv,adn7(mkcharge.

  Is it possible for two negative charges to attract eagip4d1qfc4q c8x7,zfe k* 0v bch other?

  Is it possible for a positive and a negative charge to att6i-)keym* 6pn) dkrbvd7gja* ract each other?

  A glass rod is rubbed with a piece of silk. During the prqd 5oa-m7 qgp-s-r ftu1 o2.mcocess the glass rod acquires a positive charge andcmof2-p-qqu 5tr s17o -dgam. the silk

  A proton carries a

  The model of the atom shows a +1njsv+vlt :u

  A neutral atom always ;( 1a4wcsrq0 omju5d lhas

  An atom has more electrons than protons. The atoaaag2e 0;.o bj4x p 2lo2/qhqtm is

  Materials in which the electrons are bound very tightly to th k93*fwh2cv-uqxh v7arm7 7ile nuclei are referred to aih37-a2m77 fvwkc* v9hrxlq us

  Materials in which the electrons are bound7a/wb, tlvz2rf+f (gn./tun-se yh/s very loosely to the nuclei and can movetetua+f-gsb,z w/2yl /fhs (.rn7/v n about freely within the material are referred to as

  A negatively charged rod is brought near one end ofi;fju;0oil qawlz2d3p.: 5tf an uncharged metal bar. The end of the metal bar farthest from t.q;pw:z3l0odltifi u j;f2a5he charged rod will be charged

  Sphere A carries a net positive charge,ve( , ds:-vjtf and 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 statement itdj-, v:sfv(es correct?

  How can a negatively charged rod charge an electroscope ph/7,k:tmiyl tp t j*y.us4k1kositively?

  An originally neutral electrosc,. (ldt /5f9cfmf l:swf8k*4 uxhxeqbope is briefly touched with a positively charged glass rod. The electroscoped ufhfk9lxf8ml q4,wstx(be/* : c. 5f

  An originally neutral electroscope is grounded briefly while a pofj82fy m )lwd28m+l dysitively charged glass rod is held near it. After the gl2ydlwf ymm8 )ljdf +82ass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves s dxi6 kiuu cs02f oiakd*v;:q 2t37by6eparate. Then a negative object is uu;cdk kiyviq276o ax 32s6 ti:0 fb*dbrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pla 5yx(ba daz* o8i+qkh.ced 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,+oayad ik*(qb z h8x5. 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 Coulomb +u45akiz4g1k1gfq hp. ttlk)constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge mcz;/:vuzt* en( gz(lis larger in magnitude than z z ezmc(g/v(;u:t *lnthe second charge.

  Sphere A carries a net chargehv5,k s q kc67lf jr;hbd-ih51 and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forcevq7 ,khh 1 i5ld-fh5rj ;k6cbs between them?

  Two charged objects attract each other with a certain force.jtwokmt1/az r;b: (dy)-u a ,r If the charges on both objects are doubled with no change in separatio,t;)rozjat/y:wb r m kd1( u-an, the force between them

  Two charges are separated by a distance d and exert ; si(r*d3(qtx) expxb n7:g dbzi0kz*mutual attractive forces of F on e xd (q(xziek)zr7 bs*binp;0xg*:d 3tach 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 force F. What happen+ctpes56ry 5zsf5 4vns to the force between them i6+t4r55pfvs scn 5 eyzf 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 is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hay cr+ xyqq1 ldpje avz+d/7/sv)f/s*-ppens to the magnitude of dxas+qf/c7jzv eyly1/-r/ sp*)qvd+ the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepao+mk3 upaxa9v-t*i c:rated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sec*a+ -c kuo:9p3a mxtviond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ ((aazd:aootvqn76x+ens to the size of the force on the proton if the electron is moved 0.50 m closer too ot:d(v naaxz(+q6a7 the proton?

  A point charge of +Q is placed at thq8vtt.tk:+m1 cq5gjs/ v yz9te 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 the positive char kq /msvq yj:+tt5tvtc9zg8.1ge 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 equilhlpp (ni0d+e, ateral triangle. When a second charge of +Q is n p, eplh0+(idplaced 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 noto7(js/ v;czt6 ee.cfp a vector?

  At twice the distance from a point charge, the strength of the elec3(defij9oza :u 4fij8 tth:-ytric field

  Is it possible to have a zero electric fieldjn8 oog6fk;u93v) p ad7 nz/mw value between a negative and positive charge along the line joining the two charn/)wpgvo;fnd z o6j8m39u7ka ges?

  Is it possible to have a zero electric fpv1)frdat q lw6)7sz nc -vc,5ield value between two positive charges along the line joining the two char c16tw 7-fa)cd,psvz vrlq5n) ges?

  Electric field lines near ii:-y5nsj2et, qp2 vf2f4 d fxpsitive point charges

  The electric field showjfuuaz:6h rsn2exi.0 ; r:iz.n

  Can electric field lines intersect inx )6bh8hfqy9p free space?

  A solid block of metal in elecz .16ujbe09dnqiu.- inc2 g nitrostatic equilibrium is placed in a uniform electric fie9q 2n jbz60i1 .-iund.gin cueld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere 7gf9f1yefe.-ma woh/2e yebkh0bz9: of equal diameters are each given the same charge, the electric field (E) midway betwbbz.7kwg92eem1 o e fy0fha ye-9h:f/een the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unwm:+e.s kw h8ri/c:5+iqs igv iform electric field is directed straight upward. What can be saiev+ h+ 5icsm i:/qw.:i8 sgrwkd concerning the charge on the block's top surface?

  If a conductor is in eleyu)y /na 2f* sgr)ko1j+;u ihoctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow pf36gcwm 4 7ztku2kia -q*gb8metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a pointpgz8*kci 6 aubwkg4- 7qfm23t directly above the hollow sphere has

State three properties of conductors in statyp;.kmuk r k1aa;y66ii* -q qfic equilibrium.

State Gauss's law.

  The charge carried by one electron is -(yhg4j1at x.nkiv rxd ,o* al,gy3o,$e = -1.6 \times 10^{-19} \; C$. 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 mno; ;nf09rz)eseqs .more protons than electrons does this piece of plastic ; ms;snf9r.e neoz0)q have?

  What is the charge on 1 kg of prov/8 ero/z wv: q;n-vdetons?

  An atomic nucleus has a*k bmr*qo8s+ ol77rpv charge 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 -4.0 mCel5qalgk)/y1j e- zj; , respectively. What is the magnitude of the electric fore5j1e;-aqly )g/l zkjce between them?

  A 1.0-C charge is 15 m from p+rki di p4mw3/tg 3*ea second charge, and the force between them is 1.0 N. What is th ipptki3g4r ed3/w+*me magnitude of the second charge?

  Two 1.0-C charges have a for xz2 4eijg zfn-ji8o(9qz97rxce between them of 1.0 N. How far apart are they?

  The force between a 0 7/ki xqd*bn)yk bcik1qd)f ,$30 \; mC$ 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 1jnz30pgy2gx4 lk7 e) d.0-N force. If they are moved to a new separation of 8.0 cm,gy7dgpx )2n ljk34 ze0 what is the electric force between them?

  Three identical point charges of 2.0 mCv1:zgy6c fg e)2yzb* s are placed on 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 ma6z*fg1b vye2 cgy):z sgnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are p ph g+b 0*:ivr2f1wbzwlaced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the r *vbh1 2if: +wbrgw0pzight 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 the origin?

  Three point charges are located at the following positions: Q1 = 2.00 /pfxfc 2v :-kemC at x = 1.00 m; Q2 = 3 /vkexcffp:- 2.00 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 plak 570fdi6jglm/,v v 10lda .w hqwror:ced 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 centerd d ra,oh:vv.w16 m7f 5l/0rqw0glki j charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.31l lq /4g8lpkx0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whakg8q1/ pl 4llxt is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);7; qhgvxn-7hzq 0, +goiahyh 97of a,f Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directi y hihgv,a9n 0g zah+7 7fqhfx-o;,7qoon of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equil6wckkh 1po86 nateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one k6kc1pn ohw8 6of the charges?

  Consider point charges of +Q and +4Q, wha ) v)y(gf7dy/ d;x). z,efenyw hfd5iich 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 such that the electrostatic force acting on it would(n7f;d). i)) fv,he dyzwy yg /5eafxd be zero?

  A +3.0-C charge is at the origin and a +9.0j :+diir2d1) hw2khho -C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the nethhw hkr):j d+d21 iio2 force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.mzal; q)ogu1q5u5fk d niy.-0 Where can a third positive charge +q be placed so th ukqul5df5mi ) nzo-1gq. a0;yat the force on it is zero?

  A copper penny has a mast 9fp onqzat7jzc/ ;/8s 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 aga tqs /v b;,zr7mo+px82,bnbfrinst the force of gravity by the attraction of a fixed proton some distance above it. How far above the e,8p fro 7bnb+xt2rv b/msz,q ;lectron is the proton?

  Two 0.20-g metal spheres are hung from a com2r9h in/jof7,tr18r m qpd:ucd, cm -wmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untilodhi n2mrjc17dp,q- ,w 8 f/t:rcmr u9 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 6ach8zl0-gw20x3o :ohl rcetfx3tq - magnitude of the electric field at a distance of 1.0 m from the nucleus?ez-w6c0r:xf03h t2c ht3o8gaqol-x l

  What are the magnitude and direction of the electric field at a distance of 1.50lwa as6up0f.*cr)a5x 1ni i +iko wo99 m from a 50.0-nC olxi)i.5c o kaf 90i*9p w+16na ruaws charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofl7q clpdr;,g. the electrird;g lql.p7 ,cc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test )evprrz4 :8sfcharge. What is the direction of the electric fields zrvp)8r e4f:?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude4sayn.3z1g g9rhz sh+d96 npw of the force experienced by a 1.0 nC charge placed at the loca 3 9gd.a64z+zh1nrsn9yshgwp tion of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dis. tj(,j a;usjitance of 4.0 m. What is the electric field at j(isa .tj,;uj a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mc7;t gczds4 zo3)4 roveter stick and a -4.0 mC charge is placed az 7r)zc3c;4stdov4g o t the 50 cm mark. 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 -4.0 moib2z4xh7dir+p p z9fd3c,4 h jt nd/7: 1lajgC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric ffoa d p4hhblj cxi ,+n7r d/31ti d4:z2zjg9p7ield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at 7ylv4ev -jkfuzle w;7qb . z/(x = 0 and x = 0.20 m. What is the magnitude of the electric field at the u vyqw(zk7./ez; 4f -lj7lbevpoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.p+yg8 t0q,y bx50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at theyx+gpb80qy , t center of the square.

  Consider a square which is 1.0 m on a side. Charg 5-l7qh06k rpux)egzn-h *kkc es are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0);e rh k p5k-guc7l6- )xkz*n0qh -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 charecgal0++2 ian ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elec0i+cag en+ la2tric field?

  A particle with a charge of*ld/ adah 2az0 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 y+wt -p2yj:co0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susp-2 cyw +jtoy:pended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC./c5aqmy0z2 4 s kj0mqjob76 tp6lo8ux The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude anp75 qm4yqz02stacum j lk6 j 6b0o/x8od direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0iz,prw xbpg5b439 d q l8)li1j mC. What is the magnitude of the electric field 5.0 cm from the sphere's suw bg3r8lqij bz5 dppl 41,)xi9rface?

  A metal sphere of radius 2.0 cm carries a charge of 3. h4d ee;a.2f6qo,eqo z0 mC. What is the electric field 6.0 cm from the center of the sphere?,. f qzhoo4dea2e6eq;