State the law of conservation of elecr*dpb)3kw * keqkup* 1tric charge.

  Is it possible for two negative charges to a(ejoj,o j 6,ln7zkn;cttract each other?

  Is it possible for a positive and a negative9cy hb+) uihm; charge to attract each other?

  A glass rod is rubbed f3ls;yju-.1f yt 9mm-d3xm inf,yog( with a piece of silk. During the process the glass rod acquires a positive cf ,iju;f.yn3 (3yst1 ml9m gmyo- fdx-harge and the silk

  A proton carries a

  The model of the atom shows at8knkj tiogq.5mr)/ m+1b y)p

  A neutral atom always has**7aa gfnqrl2)m z m( w00sg2g(sedzw

  An atom has more electrons than protons. The atom ishhp 5k j rb/my i.giq-pmmyk ;*h9p4/1

  Materials in which the electrons are boa 0zof1 sx6v8chcdi 38pk,mv+und very tightly to the nuclei are referr+6a fxm0zvc i v8c 8h1kd3pos,ed to as

  Materials in which the electrons are bound-bkvi5if6 xqc 5* *ntr very loosely to the nuclei and can move about freely within t*r qvi55k6ix -btcf *nhe material are referred to as

  A negatively charged rod is brought near by wime+te x,2c;h h96one end of an uncharged metal bar. The6chwt9, x;+2hye b iem end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tofe*ybh 9-0vyemi ;hc( g,+ eyhey are placed near each other on an insulated table. Sphere B is briefly toucheiev,y( -*y+yce9 g0;mebhh fod with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivek 1 kjur6rv2g8ly?

  An originally neutral electroscok70 v35 o dc5n5rxgpwype is briefly touched with a positively charged glass rod. The electrosc5 xvyk d5g537noc wpr0ope

  An originally neutral electroscope is grounded wowpm os2j5/w7im* b 6briefly while a positively charged glass rod is held near it. After the glass rod is rw6ws*p2w75i/bj omm oemoved, the electroscope

  A positive object touches a neutral electroscope, and the leaveayeai2w vb(p*,ae9t* s separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leai(y v*,9baapte* 2 waeves?

  A large negatively charged object is pl wqn-o8zng 83t-ej ov) sr43wsaced 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 follorogv4-tosn n 3qez8w83-jw s)wed 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 Coulomb consta g9yx06o zcr4 6 i).vi(),iawtybazm gak-ao1nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di:d 89ep 740jj -hlf ) 0zzldyicxbj,st2.vssb stance d. The first charge is larger in magnitude than the second chargj 2 jzsyh4 zpj:cb 800svfld7dex9st. )l,bi-e.

  Sphere A carries a net charge and sphere B is neutral. They are plachr0u(azm gr-ybi jg+et (:q81ed near each other on an insulated table. Which statement bes(g:8 ryiue- + 0z qab1hmrjg(tt describes the electrostatic force between them?

  Two charged objects attract each jt98 t k/bq;ywc/+aqtj,kt j2other with a certain force. If the charges on both objects are do9jy/tjcq2t, jqbat wk +k;/8tubled with no change in separation, the force between them

  Two charges are separated by a distance d4jm 5.9 rveqxr5k (fog and exert mutual attractive forces of F on e4v. 5(x9orgqmr j5 efkach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wisrm5z t(2x: yoyzv v8pdx v:,0th a force F. What happens to the force between them if onp,ox0x zvzv2dv: (ry5st:m8 ye 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. W ka -qhu8e e5h.mmo8 *cdhv/d3hat happens to the magnitude of the force on the proton if a second electron is placed nextd.uqae*88kh - m5h3hvm /eodc to the first electron?

  An electron and a proton are separa ib:.h5 rfun8a,(etkmted by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is p h :rtib (ka.u8m5fen,laced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happenqt+;* r6ac7q9taf jywp( )lbfy-hc 3 liax5j 4s to the size of the force on the proton if the electron i(twjtip3la*5hl ) + jyc 7qc yaf;-b46a9frx qs moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of.rs, nwqj0+wy 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 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 +ry.s,ww0j qn the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilch1hxq3m0 x .lateral triangle. When a second charge of +Q is placed at one of the triancx l 3mq.01xhhgle'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 not a vectohevvw5+f;o d8 jjn, l.k7ms5zr?

  At twice the distance from a point charge, t;23pg4dko 2r qun s,zohe strength of the electric field

  Is it possible to havezn.4axnq* w y) a zero electric field value between a negative and positive charge along the line joining the two charges.n*4w) q nayxz?

  Is it possible to have a zero electric field value between two posiyg un-va kje-h(+/cq3 tive charges along the line joinin -c v(h+yg-jqn3k eua/g the two charges?

  Electric field lines near psitive po n yxb7mnzxf8-s e25*fint charges

  The electric field st9)*xr z +ls d3/h)qgrfd+dbi7e whamx4 aa/3hown

  Can electric field lines intersect in fre wh dz),w 7d.,yypmxx+e space?

  A solid block of metal in electrostatic equilibrium is plac:wa 4 fss0ea m5yf*tah*jkro 10ip)0ded in a uniform electric field. Give a statement conce5 s)0s4t10ia a*0jm :edyfrpa wohk*f rning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet/agzak i655a qers are each given the same charge, the electric field (E) midway a q5ak/5i6agzbetween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unq /0r(/b 4zl lrnziu*x k1xzahq9v *j;iform electric field is directed straig0i1jzxq r4unl*x *(l/z qak/zh br9v;ht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric1mdv3jwfq d-l:/ +kht w t7b mq,b,n:h charge

  A positive point charge is enclosed in a hollow metallic sp+(c +bwvlrr2kd 3dw 0g 74xsbvhere that is grounded. As compared to thekw db 0sr7+gc32x l v4b(w+rvd case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eq8eu 5v3dumk0x uilibrium.

State Gauss's law.

  The charge carried by one elect:y k:xm+y fnd)ron 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 +2k),el rxw9 i/r/(fwsp0 (fml j;c3erc.00 mC. How many more protons than electrons does this / ,pxcmllr 9efwjr eik0/ (;f3w)cr(spiece of plastic have?

  What is the charge on 1 kg of prot 6+ htx8rgtlkbwu(y 26ons?

  An atomic nucleus hastda6.m7)rqr e a 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 mCuwizsh 2 db.7*, respectively. What is the magnitude of the electric forb sz2dh.u *iw7ce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them i p s*tnted)vw*sx 0u:8s 1.0 N. What is the magn8pwn : s*t0uxtev)ds* itude of the second charge?

  Two 1.0-C charges have a force between them of 13y6m tj2ih;/ avn 2awvwh3ze,.0 N. How far apart are they?

  The force between a 5(miq;xey lot .w tyv0* 2em 8*:wztwvkyug84 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.qzpzuixjb ,.d/6bo+ir o)+h- 0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm.z o+ziui/)6xb-porb +,hq dj, what is the electric force between them?

  Three identical point charges of 2.0 mC are p+wj7y21a(arj1: nq opf7xx v slaced 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 magnitude and direction of the electrostatic force which vyrpoa1jw jx727(:sn a1fqx+ acts on the charge at the origin?

  Three point charges are placed on the 52a yqkq0qfdtzd53g5 x-axis. A charge of +2.0 mC is placed at the origin,055qg53qf dq2 tkz ayd -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 the origin?

  Three point charges are located at the following positions: Q1 = 2.+ 9do3cxtr4bw/yu+p *j lh.a e00 mC at x = 1.00 m; Q2 h3b+cux/ dta *o9yerl+wj.4p = 3.00 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 placed at thz kycx27 uke1xw):lh3 e 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 placed7 12xcy kkzlx) 3uehw: at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 48;/f9arpg bgzk:j b(cwr* 4tw qpb1u 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.8 4b 41w/ pg(w9cpf*k qju;bgbra:trz0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -anlo 3b 9/t+og1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directaglb 9+n3/ ootion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of l9nu+qgpbb7q3ai7 3 ,y i2qmuan equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic7,uqnp3 l9 qigm qua73b2iy +b force which acts on any one of the charges?

  Consider point charges1sfjv8we rr/i559 yc6ubtqk 0 of +Q and +4Q, which 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 ac6 ick j5 u t10v9fsw8/5qyerrbting on it would be zero?

  A +3.0-C charge is at the origin ab bocegs8e;vz*.n. a 3nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can ogb ;cebva38..*zns ea third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q i5fth2qlpyv(q2hy bovkxq,f e*k ( ;5:s placed at x = 2a. Where can a third positive charge +q be placed so that the for:ltv2,h5(p5 xqyqkh fky *;vo( ebf2qce on it is zero?

  A copper penny has a mass of 3.0 g. A+ fd1l))1 -h jzaujwmw 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 attractio(d4/dmbl 6jp):i,dzl u:ugshj, d*mc n of a fixed proton some distance abovec,*bdsup( z6di d4:: mdghjl,ml)j/u it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondudm l l83t9/;n(wfcvgxcting threads which are 30 cm long. Both are give; wftgvn cml98 x3(/ldn 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 ,wep a;zli.4vp* r;g0rrkc3p a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleu;r4r0 .e,rg3iwpc lpkv*; pz as?

  What are the magnitude and direction of the electric field at a/9j zje,ti wpfrp( x0- distance of 1.50 m from a 50.0 r-tepzfw0 j9x( i/j,p-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is )y j 5(:n2o0kqcs ivkmthe magnitude of the electric field at the location of the test chargec)0osyq5:mkk (jvi 2 n?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the ecuhn l-ko-el)fn8z-- kp 8*h ulectric field -* z -kk)ulu8h leopnnh-c-f8?

  A 5.0-C charge is 10 m from a small test2ec d1rgaox26h4 ; 8 r9qvfsqz charge. What is the magnitude of the force experir2s9ax24; q816 hr gocdqfevzenced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated bmye9xvv3z8 q7z vopp ahm-3p)a( w 7,by a distance of 4.0 em9oxma8 b3 zwp7v,za3y( 7 -v)qvphpm. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m;4r0*odak aw 3ub fjk2k 1ltz;ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What z*2dr a4; wa0tkbj1kfl3kou; 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 ov9o5f3 w+z1uu8ll 2uq yjo)land a -4.0 mC charge is placed at the 50 cm marzo youov 52wl93uu1l 8qj)l f+k. 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 lzur58n nnw11e+jo zs8) do 8ymC are placed at x = 0 and x = 0.20 m. What is tn o8l8o8nrd+)zseny zwu511 jhe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners oc*r mg ek9xt.h34va +cf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the ce ck g+mrte.493cxhva*nter of the square.

  Consider a square which is 1.0 m on a side. Charges are placedyc1pb:/ b pcugbc n)4) 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); -3.0 mC at (0, 1). What is the magnitude of the electric field at the sc):4gbnb1by )uc/pc pquare's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform el((ey gp5wps, d1d6rsfectric field. What is the magnitude r py sfd p1(5wse6d,(gof this electric field?

  A particle with a charge of 4.0 0:ff q/1u lxqfgnd1v-i 1 1fetmC 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 2xkk 312b,kusmk8fbn0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be b8ku1knkkf m 23,xs2bplaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chbe lu(g lz,p8syv7+(k arge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and 7szgv bkl ,8pu+y((l edirection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What imqw 07* ow9o7n yu7fmds the magnitude of the electric field 5.0o7 0 uyofdnwq 7m*9m7w cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge u vqzxn1w-+n3j/wo 445fv oed 4kjg+fof 3.0 mC. What is the electric field 6.0 cm from tu jvnzqw-jg oofe34f/xd+ 5+ v44 1knwhe center of the sphere?