State the law of conservation of electric iyl4 *.2rfcjm pbux*z /8hhi6 charge.

  Is it possible for twobnr9-tcl ;gq /p0dnjt4c sg89 negative charges to attract each other?

  Is it possible for a positive and a negative charge to attractgs4ww(i j 4m9 *dbo(sb each other?

  A glass rod is rubbed with a piece of silk. Durizcg0 0j1ojnb1wl36n rng the process the glass rod acquires a positive charg w b0ngr0jj 6nl1o1c3ze and the silk

  A proton carries a

  The model of the ato+, yfzf-dn7bgcsy vn5 av(6h7 m shows a

  A neutral atom alwayqql3y1/ dz9 (pxe ah/is has

  An atom has more electrons than protons. The atom isx6(6(ddh96xybun5l3a 4ofqy 2wke if

  Materials in which the electrons are bound very tightly to the nuclei are referh:uq*(euw a k,red to :uq ue( a*w,khas

  Materials in which the electrons are b3 1kxa *zu5 7kvfwrmyn6lg 00aound very loosely to the nuclei and can move about freely within the material are ref03vzlaryk0kw5 nufg7mx6a 1 *erred to as

  A negatively charged rod is bror ,rp hpok3s8*ught near one end of an uncharged metal bar. The end of the metal bar farthopk* 3h r8psr,est from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is n8kf8(h- hrs1v-0tl8muy hk a meutral. They are placed net8vhks -mka fl1(uh8y0h8rm - ar each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an o1ft;n:dmp ic6:mk 9a+ *e*e *ja wovielectroscope positively?

  An originally neutral electroscope is briefly touchgr+iv 5u9b.bdob, -d/a;yha c ed with a positively charged glass rod. vu;-+bb,ar dy hciga5b9/.do The electroscope

  An originally neutral electroscope is grounded bri+5baxt,4d6zxfz sd v2efly while a positively charged glass rod is held near it. After the glass rod is removed, zs t+dva2fbx64 xdz,5the electroscope

  A positive object touches a neutral electroscope, and c9r +3zxe,b,y5xbfoy the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whacbo zy b+ye,r9 ,fxx53t happens to the leaves?

  A large negatively charged object is placed on an insulated ta*bapg63i 4biable. 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 bigi4baa3 pb6* y 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 Cok pt aco/az/52ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. T 8;itk klz0 8kagp(h4s .ucx. 80wyoqdhe first charge is larger in magnitude tdto;.i sk8p 88 0gywkk au(.l qc0h4zxhan the second charge.

  Sphere A carries a net charge and sphere B is neutralctnz0u-3o /g dc-v+gu. They are placed near each other on an insulated table. Which dzun/ -vu ggtc-c3o+0 statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If thqh6xgv4igbo p*kef7n m5 ebz 4tq)o9a59 u;7ve charges on both objects are dou4z vh xuge fg6i7)pnma oe9b;ov kq5b9574q*tbled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesx*g2bl(o5dh c of F on each other. If the charges are separated by a distance of d/3, what al xb(cd*52ghore the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the f0w u1 6whdh; ,5ur) zrcqg:uyworce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth itr0uhd1rw uyw ,c:;hzu 65)wqgs original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 2cf9 /r,xff+)dpqbpi m. What happens to the magnitude of the force on the proton if b9f,rd/pqic +xpf )2fa second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whaulp-*jp 0bb90 lihismre--) 8 *quak qt happens to ppllu0-a-*)qh bk 0e9s*mu8bi-qj rithe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens ti m kr-i9bo/s3o the size of the force on the rsiomk3i-/b9 proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at f9186exj)2 d+ pdvll zao dfqr-6o 2althe 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 charge at the square's center. Now, identical char+praa6o9l fdddx z8o v2-jl)1e6fq l 2ges 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 triangle. When8x;x fn nq t25a jqu)doe6g8j* a second ;q 2 ontxe8u*x)f685 qdj gjnacharge 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 not a vector?-, m z2n8nn,e 6fzfljwcx )+zw

  At twice the distance from a point charg-adn; 6p/1:zmj ymb5lpyrh:d e, the strength of the electric field

  Is it possible to have a zero electri (8 vwvy8/bp awpr:k,ic field value between a negative and positive charge along the line joining the twvy(k8,: p/8iabw pvwro charges?

  Is it possible to have a zero evfj ;k3,szs:d hv 8+helectric field value between two positive charges along the line jo3 :s+kvf s; 8vhh,ejdzining the two charges?

  Electric field lines near psitis4 z-kr/r ;fq/9xw wtive point charges

  The electric field shown (o4 klhi5xls9

  Can electric field lines ixg8k+jo9-m scntersect in free space?

  A solid block of metal in electrt5r041ovi hgw f1f(rbx8 wdc7ostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric7hf4c1i8x0g bwr(df v1 5o rwt field in the block's interior.

  If a solid metal spher iq*,h,pl::8p guukxxe and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midwax,pguuxp, k:*l:q h 8iy between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformppf- s7**qevwh scmjv7v6a 69 electric field is directed straight upward. What can be said concerning the c-sq6 9hs7*m pp6 7v*wvvfa cjeharge on the block's top surface?

  If a conductor is in electrostatic eq7t+2if v-tl*j)ya f i3ligb -+rc wla6uilibrium near an electric charge

  A positive point charge is enclosed in a hollo9qc:,v,i rq4fhhdb:m ao9i8 fw metallic sphere that is grounded. As compared to the case without the hi v9dbihh8q:,:rc ,om f9fqa4ollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilib*k m07nquvn/zdgejg- hf3k-i.iv: ,qrium.

State Gauss's law.

  The charge carried by one teo: po675 m07rnbsplho g5s 2electron 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 l4u w kcq;366eagz kh/protons than electrons doez ;l 66/3q4ugace khkws this piece of plastic have?

  What is the charge oi/pbs j61k*thn 1 kg of protons?

  An atomic nucleus ha5o )ov5cblpr9 ogz3 aq ww--(ss a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepbqw tl67rod 22arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, re l bdr72qwt62ospectively. 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 betwe 3jbe+x .p)eb+ 9;0tfmhr jiaeen them is 1.0 N. What is thi9ejmb.htx0+pe)a3br;j+ f e e magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How cdmaou 3et ho *m/j g;pqu4o(hy/2-7xfar apart are they?

  The force between a 5pav p2w; ojvrk2 v0t9$30 \; mC$ 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. Inod5qjy ; f xz2-mqn uax)/wj.o84do+f they are moved to a new separation of 8.0 cm, what is the electric forcen.oyz -8udfm4qj/2ao)5x; xwqj on+d between them?

  Three identical point charges of 2. qkw;bo(a hga gr:99i4sg; rg:0 mC are placed on the x-axis. The first charge is at the origin, the second tog gi 4grs9q o;agk9b ::;(rwha 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 on the x-axis. A charge of +2. w*abmog+p +d a9yaf9*0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm,fp*gd9ay +a9o * wab+m 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:6kg ygm400 hxie(,xq j2fhv s9 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 force ovj,(eg h4m fsqgx0kxyi02 h69 n the 3.00-mC charge?

  A point charge of +Q 22qadp+j bwcdn-4ficp/m + gjz; 4dp0is placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed tha-cd2;bpq / af2ig pcwj+mpn+4d 04j zdt 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 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); Q3k linnqp z fbt(,h9+/gv0k/b : = 5.0 nC is at (0, 0). What is the magnitude of the net force on /zk/0 vl9n pit n,g bhbf+qk(: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 2 6jcb4 qnkgugjfo 145is at (0, 0). What is the direction of the net f4u65 okbgng j24 qjf1corce on the 5.0 nC charge?

  Three identical charges of 3.0 mCc +w 1ajbqx;l3 rs55 w/j/iard are placed at the vertices of an equilateral triangle which meaal r5bcj/3+rqsdiww/j5; 1xasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charg.agmd (;dg;i. )k k 1pu7hfkcses of +Q and +4Q, which are separated by 3.0 m. At what point, o1dka 7i.;c. duk)m sh(g pfg;kn 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 be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at 8q4sqtf qxj3 9x = 4.0 m. Where on the x-axis can a thirdj qx3f8q4qst9 charge 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;zjh3l n n+vn:x srkc0)ub ,5 halr4c9 can a third positive charge +q be placed so that the force on it is zhxn4 ajkcu , hr0nbzc9r3l);nl:vs5+ero?

  A copper penny has a mass of 3.0 g73qqy:octo ;k. 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 force of gravity by the attraction 5 5cwn;oq9wny of a fixed proton some distance above it. How far above the electron o;n59c5wqynw is the proton?

  Two 0.20-g metal spheres are hung from a cos:ab;xvv7y s-xzu t)7 .;o dbpmmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anus;b)xx.sd;7vvzbty po:-a 7gle 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 the elecwiab ;ced ;0 ibc/j;aq-l of;1tric field at a distan;jl abbc-qw ; /o fc10;ai;idece of 1.0 m from the nucleus?

  What are the magnitude and directi2jxuv g*oaa- q2cmm73 on of the electric field at a distance of 1.50 m from a 50.0-nC chj *gvc-x7qaoa 2m u2m3arge?

  A 5.0-C charge is 10 m from a sl lx8a2b,y g*imall test charge. What is the magnitude of the electgx 28i blay,l*ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test vy.7l pa;;yzxu qrk(ml: kn 17charge. What is the direction of the electric;lmkq.u:y 1xry(lvz ;n7 7 kap field?

  A 5.0-C charge is 10 m from a small test charge. What is the ma76l8bev a,2qhp9uesc gnitude of the force experienced by a 1.0 nC charge placed at thelb,sepcqvh9 ea 8627u location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dist(epcosdi32gokuv qfx *y6x()3 - agu-ance of 4.0 m. What is the electric field at a point midway betwees6)-(cyo-k(efup qix3*x vo 23 u gadgn the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mq6e yrph74qa5)ecjw2 eter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30j4h26qp )r qawc 5eye7 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stict*xk +r7ngbj3e g;fh7f*y0ho0f y ;, idjvwm+ k and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining ; t*gjhmxv+j0b+frihwe f07gf,7 * doy3 n;kythe 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 = 0.20 m. i/cwux9kkn:1 l b2fb: What is the magnitude of the electric field at the point midway between /wl2u n 1kb9i:c:kxbfthem?

  Three 3.0 mC charges ares 1qcoh2e5-xj x /vvy+ at the three corners of a square of side 0.50 m. The laso + e v5q/2-hysv1xcjxt corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which1)urm,w ifj /-z.une i is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mjieuw fiz,m1.) /ru -nC 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 1f) )5i2izq; fdn4nw r dbgo606js dezof 5.0 mC when it is placed in a uniform electric frdgqdfwd5 2ozn fen 064j); i)sb6i z1ield. What is the magnitude of this electric field?

  A particle with a charge. 3fpza3.bizd a*brg8 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 fin -+3coshr ,myeld of 6000 N/C pointing downward. What charge must be placed on the ball for it -hsc3rmyo , n+to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball inv4r/8- q qs a6otvr)dx;v g;qath1 .ys placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude anav-sa;dt/6.qvrh )4xg1ynvo;q r t8 qd direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC..qi4zr td7lp9 What is the magnitude of the electric fielp74 lztiqd.r 9d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 8:nv6at;l) yiqnvyn h. o7qw.cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from 8)7;iy .q owynq:l tvvh 6.nnathe center of the sphere?